diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f68e55fe10..414b91159b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -147,8 +147,10 @@ jobs:
         run: |
           cargo make check --tests
       - name: Test
+        # The p2id end-to-end tests drive full nested Cargo builds, so the
+        # release-profile job runs them.
         run: |
-          cargo make test -E 'not (package(midenc-integration-tests) or package(midenc-integration-network-tests) or package(cargo-miden) or package(midenc-template-tests))'
+          cargo make test -E 'not (package(midenc-integration-tests) or package(midenc-integration-network-tests) or package(cargo-miden) or package(midenc-template-tests) or test(~p2id_schema_builds_and_decodes_account_id_storage) or test(~generated_p2id_bindings_compile_and_run_in_a_consumer_crate))'
 
       - name: Upload test timings and failures
         if: ${{ always() }}
diff --git a/.release/config.toml b/.release/config.toml
index 55f7ce7667..7e7e8f6cdb 100644
--- a/.release/config.toml
+++ b/.release/config.toml
@@ -217,6 +217,34 @@ unit = "sdk"
 name = "midenc-frontend-wasm-metadata"
 unit = "sdk"
 
+[[packages]]
+name = "miden-note-schema"
+unit = "sdk"
+
+[[packages]]
+name = "miden-note-schema-codegen"
+unit = "sdk"
+
+[[packages]]
+name = "miden-note-bindings"
+unit = "sdk"
+
+[[packages]]
+name = "miden-note-bindings-macros"
+unit = "sdk"
+
+[[packages]]
+name = "miden-note-codec"
+unit = "sdk"
+
+[[packages]]
+name = "miden-note-codec-macros"
+unit = "sdk"
+
+[[packages]]
+name = "miden-note-codec-wit"
+unit = "sdk"
+
 # --- private: repository infrastructure, never published ----------------------
 
 [[packages]]
diff --git a/Cargo.lock b/Cargo.lock
index d48b4a042b..f70bbc9023 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -12,6 +12,15 @@ dependencies = [
  "regex",
 ]
 
+[[package]]
+name = "addr2line"
+version = "0.24.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dfbe277e56a376000877090da837660b4427aad530e3028d44e0bffe4f89a1c1"
+dependencies = [
+ "gimli 0.31.1",
+]
+
 [[package]]
 name = "addr2line"
 version = "0.25.1"
@@ -242,6 +251,21 @@ version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d301b3b94cb4b2f23d7917810addbbaff90738e0ca2be692bd027e70d7e0330c"
 
+[[package]]
+name = "ar_archive_writer"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73cd58deff2140a0a8eae87e417bd01db68a33e148aa93d1e8cd837e55e312b6"
+dependencies = [
+ "object 0.39.1",
+]
+
+[[package]]
+name = "arbitrary"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3d036a3c4ab069c7b410a2ce876bd74808d2d0888a82667669f8e783a898bf1"
+
 [[package]]
 name = "ark-ff"
 version = "0.3.0"
@@ -761,6 +785,9 @@ name = "bumpalo"
 version = "3.20.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72f5acc6cb2ba439de613abc23857ec3d78374d8ed5ac84e9d11336e87da8649"
+dependencies = [
+ "allocator-api2 0.2.21",
+]
 
 [[package]]
 name = "byte-slice-cast"
@@ -806,8 +833,11 @@ dependencies = [
  "liquid",
  "liquid-core",
  "log",
+ "miden-mast-package",
  "midenc-compile",
+ "midenc-frontend-wasm-metadata",
  "midenc-hir",
+ "midenc-integration-test-support",
  "midenc-log",
  "midenc-session",
  "path-absolutize",
@@ -816,6 +846,8 @@ dependencies = [
  "tempfile",
  "toml_edit",
  "walkdir",
+ "wit-component",
+ "wit-parser 0.247.0",
 ]
 
 [[package]]
@@ -1012,6 +1044,15 @@ version = "0.5.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0c9ea0ac24bc397ab3c98583a3c9ba74fa56b09a4449bbe172b9b1ddb016027a"
 
+[[package]]
+name = "cobs"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fa961b519f0b462e3a3b4a34b64d119eeaca1d59af726fe450bbba07a9fc0a1"
+dependencies = [
+ "thiserror",
+]
+
 [[package]]
 name = "codegen"
 version = "0.3.0"
@@ -1154,6 +1195,43 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "cranelift-assembler-x64"
+version = "0.121.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2ce81edaca6167d1f78da026afa92d7ff957a80aa82a79076e11cd34cde20165"
+dependencies = [
+ "cranelift-assembler-x64-meta",
+]
+
+[[package]]
+name = "cranelift-assembler-x64-meta"
+version = "0.121.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4d0d51e12f958551165969c6e8767e1e461729f6c1ccae923b0ba1d5cbcbbbf8"
+dependencies = [
+ "cranelift-srcgen",
+]
+
+[[package]]
+name = "cranelift-bforest"
+version = "0.121.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41294c755094d2c8a514cea903039742474423f2e91601332eab5f4094f76333"
+dependencies = [
+ "cranelift-entity 0.121.2",
+]
+
+[[package]]
+name = "cranelift-bitset"
+version = "0.121.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ebb6f5d0df5bd0d02c63ec48e8f2e38a176b123f59e084f22caf89a0d0593e7e"
+dependencies = [
+ "serde",
+ "serde_derive",
+]
+
 [[package]]
 name = "cranelift-bitset"
 version = "0.135.1"
@@ -1163,16 +1241,116 @@ dependencies = [
  "wasmtime-internal-core",
 ]
 
+[[package]]
+name = "cranelift-codegen"
+version = "0.121.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e543cdb278b7c15f739021cf880ee1808c68fa2402febb87edb9307f552c8fec"
+dependencies = [
+ "bumpalo",
+ "cranelift-assembler-x64",
+ "cranelift-bforest",
+ "cranelift-bitset 0.121.2",
+ "cranelift-codegen-meta",
+ "cranelift-codegen-shared",
+ "cranelift-control",
+ "cranelift-entity 0.121.2",
+ "cranelift-isle",
+ "gimli 0.31.1",
+ "hashbrown 0.15.5",
+ "log",
+ "pulley-interpreter",
+ "regalloc2",
+ "rustc-hash",
+ "serde",
+ "smallvec",
+ "target-lexicon",
+ "wasmtime-math",
+]
+
+[[package]]
+name = "cranelift-codegen-meta"
+version = "0.121.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f979c75cfd712dbc754799dfe4a4d0db7a51defc2e36d006b27a8a63e018eece"
+dependencies = [
+ "cranelift-assembler-x64-meta",
+ "cranelift-codegen-shared",
+ "cranelift-srcgen",
+ "pulley-interpreter",
+]
+
+[[package]]
+name = "cranelift-codegen-shared"
+version = "0.121.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2f36e74ba4033490587a47952f74390cb7d4f1fc1fa28ace50564e491f1e38f"
+
+[[package]]
+name = "cranelift-control"
+version = "0.121.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f6671962c7d65b9a7ad038cd92da6784744d8a9ecf8ded8bb9a1f7046dbe2ccf"
+dependencies = [
+ "arbitrary",
+]
+
+[[package]]
+name = "cranelift-entity"
+version = "0.121.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee832f8329fa87c5df6c1d64a8506a58031e6f8a190d9b21b1900272a4dbb47d"
+dependencies = [
+ "cranelift-bitset 0.121.2",
+ "serde",
+ "serde_derive",
+]
+
 [[package]]
 name = "cranelift-entity"
 version = "0.135.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e0ec225d6b79c5d61358cb5ea081a1384ec541dbf8c1a8c618d187875af326ad"
 dependencies = [
- "cranelift-bitset",
+ "cranelift-bitset 0.135.1",
  "wasmtime-internal-core",
 ]
 
+[[package]]
+name = "cranelift-frontend"
+version = "0.121.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4f7bc17aa3277214eab4b63a03544b1b46962154012b751c9f14c2a5419c6471"
+dependencies = [
+ "cranelift-codegen",
+ "log",
+ "smallvec",
+ "target-lexicon",
+]
+
+[[package]]
+name = "cranelift-isle"
+version = "0.121.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cff02dcecae2e7e9c61b713f1fb46eabecdca9f55b49f99859ceb1a3e7f4a9cb"
+
+[[package]]
+name = "cranelift-native"
+version = "0.121.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "90f76fd681f35bdf17be9c3e516b9acc0c7bd61b81faf95496decd8e0000979c"
+dependencies = [
+ "cranelift-codegen",
+ "libc",
+ "target-lexicon",
+]
+
+[[package]]
+name = "cranelift-srcgen"
+version = "0.121.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c3d9071bc5ee5573e723d9d84a45b7025a29e8f2c5ad81b3b9d0293129541d9"
+
 [[package]]
 name = "crc32fast"
 version = "1.5.0"
@@ -1543,6 +1721,18 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "embedded-io"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ef1a6892d9eef45c8fa6b9e0086428a2cca8491aca8f787c534a3d6d0bcb3ced"
+
+[[package]]
+name = "embedded-io"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "edd0f118536f44f5ccd48bcb8b111bdc3de888b58c74639dfb034a357d0f206d"
+
 [[package]]
 name = "ena"
 version = "0.14.4"
@@ -1552,6 +1742,15 @@ dependencies = [
  "log",
 ]
 
+[[package]]
+name = "encoding_rs"
+version = "0.8.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75030f3c4f45dafd7586dd6780965a8c7e8e285a5ecb86713e63a79c5b2766f3"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "enum-ordinalize"
 version = "4.4.2"
@@ -1910,6 +2109,17 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "gimli"
+version = "0.31.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "07e28edb80900c19c28f1072f2e8aeca7fa06b23cd4169cefe1af5aa3260783f"
+dependencies = [
+ "fallible-iterator",
+ "indexmap 2.14.0",
+ "stable_deref_trait",
+]
+
 [[package]]
 name = "gimli"
 version = "0.32.3"
@@ -2001,6 +2211,7 @@ dependencies = [
  "allocator-api2 0.2.21",
  "equivalent",
  "foldhash 0.1.5",
+ "serde",
 ]
 
 [[package]]
@@ -2783,6 +2994,15 @@ dependencies = [
  "tracing-subscriber",
 ]
 
+[[package]]
+name = "mach2"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d640282b302c0bb0a2a8e0233ead9035e3bed871f0b7e81fe4a1ec829765db44"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "macro-string"
 version = "0.2.0"
@@ -2809,6 +3029,15 @@ version = "2.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
+[[package]]
+name = "memfd"
+version = "0.6.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "57804b2c9b69967f1536a56f86297e367a33b19e98852ed624b84551cdbc0d90"
+dependencies = [
+ "rustix",
+]
+
 [[package]]
 name = "memmap2"
 version = "0.9.11"
@@ -2959,11 +3188,13 @@ dependencies = [
  "miden-mast-package",
  "miden-project",
  "miden-protocol",
+ "midenc-expect-test",
  "midenc-frontend-wasm-metadata",
  "proc-macro2",
  "quote",
  "semver 1.0.28",
  "syn 2.0.119",
+ "tempfile",
  "toml 1.1.4+spec-1.1.0",
  "wit-bindgen-core",
  "wit-bindgen-rust",
@@ -3378,6 +3609,104 @@ dependencies = [
  "tonic-prost-build",
 ]
 
+[[package]]
+name = "miden-note-bindings"
+version = "0.14.0"
+dependencies = [
+ "miden-field",
+ "miden-field-repr",
+ "miden-mast-package",
+ "miden-note-bindings-macros",
+ "miden-note-schema",
+ "miden-protocol",
+ "midenc-frontend-wasm-metadata",
+ "midenc-integration-test-support",
+ "tempfile",
+]
+
+[[package]]
+name = "miden-note-bindings-macros"
+version = "0.14.0"
+dependencies = [
+ "miden-note-schema",
+ "miden-note-schema-codegen",
+ "midenc-expect-test",
+ "midenc-frontend-wasm-metadata",
+ "prettyplease",
+ "proc-macro-crate",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
+]
+
+[[package]]
+name = "miden-note-codec"
+version = "0.14.0"
+dependencies = [
+ "miden-field",
+ "miden-field-repr",
+ "miden-note-codec-macros",
+ "miden-note-codec-wit",
+ "miden-note-schema",
+ "miden-protocol",
+ "midenc-frontend-wasm-metadata",
+ "tempfile",
+ "wit-bindgen",
+ "wit-component",
+ "wit-parser 0.247.0",
+]
+
+[[package]]
+name = "miden-note-codec-macros"
+version = "0.14.0"
+dependencies = [
+ "miden-note-codec-wit",
+ "miden-note-schema",
+ "miden-note-schema-codegen",
+ "midenc-frontend-wasm-metadata",
+ "prettyplease",
+ "proc-macro-crate",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
+]
+
+[[package]]
+name = "miden-note-codec-wit"
+version = "0.14.0"
+
+[[package]]
+name = "miden-note-schema"
+version = "0.14.0"
+dependencies = [
+ "miden-core",
+ "miden-field",
+ "miden-field-repr",
+ "miden-mast-package",
+ "miden-note-codec-wit",
+ "miden-protocol",
+ "midenc-frontend-wasm-metadata",
+ "midenc-integration-test-support",
+ "tempfile",
+ "toml 1.1.4+spec-1.1.0",
+ "wasmparser 0.248.0",
+ "wasmtime",
+ "wat",
+ "wit-parser 0.247.0",
+]
+
+[[package]]
+name = "miden-note-schema-codegen"
+version = "0.14.0"
+dependencies = [
+ "heck",
+ "miden-note-schema",
+ "prettyplease",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
+]
+
 [[package]]
 name = "miden-note-transport-proto-build"
 version = "0.5.0-alpha.1"
@@ -3834,6 +4163,8 @@ dependencies = [
  "miden-assembly",
  "miden-assembly-syntax",
  "miden-mast-package",
+ "miden-note-codec-wit",
+ "miden-note-schema",
  "miden-package-registry",
  "miden-thiserror",
  "midenc-codegen-masm",
@@ -3845,8 +4176,12 @@ dependencies = [
  "midenc-hir",
  "midenc-hir-transform",
  "midenc-session",
+ "sha2",
+ "tempfile",
  "toml_edit",
  "wat",
+ "wit-component",
+ "wit-parser 0.247.0",
 ]
 
 [[package]]
@@ -3962,7 +4297,7 @@ version = "0.10.0"
 dependencies = [
  "addr2line 0.26.1",
  "anyhow",
- "cranelift-entity",
+ "cranelift-entity 0.135.1",
  "gimli 0.33.0",
  "indexmap 2.14.0",
  "log",
@@ -3979,7 +4314,7 @@ dependencies = [
  "midenc-hir-symbol",
  "midenc-session",
  "wasmparser 0.248.0",
- "wasmprinter",
+ "wasmprinter 0.248.0",
  "wat",
 ]
 
@@ -4137,12 +4472,14 @@ dependencies = [
  "miden-field",
  "miden-field-repr",
  "miden-mast-package",
+ "miden-note-schema",
  "miden-protocol",
  "miden-standards",
  "miden-testing",
  "miden-tx-script-args",
  "midenc-expect-test",
  "midenc-frontend-wasm",
+ "midenc-frontend-wasm-metadata",
  "midenc-integration-test-support",
  "rand 0.10.2",
  "tokio",
@@ -4210,6 +4547,7 @@ dependencies = [
  "syn 2.0.119",
  "wasmi",
  "wat",
+ "wit-bindgen-core",
 ]
 
 [[package]]
@@ -4474,6 +4812,18 @@ dependencies = [
  "objc2-core-foundation",
 ]
 
+[[package]]
+name = "object"
+version = "0.36.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62948e14d923ea95ea2c7c86c71013138b66525b86bdc08d2dcc262bdb497b87"
+dependencies = [
+ "crc32fast",
+ "hashbrown 0.15.5",
+ "indexmap 2.14.0",
+ "memchr",
+]
+
 [[package]]
 name = "object"
 version = "0.37.3"
@@ -4949,6 +5299,18 @@ dependencies = [
  "portable-atomic",
 ]
 
+[[package]]
+name = "postcard"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6764c3b5dd454e283a30e6dfe78e9b31096d9e32036b5d1eaac7a6119ccb9a24"
+dependencies = [
+ "cobs",
+ "embedded-io 0.4.0",
+ "embedded-io 0.6.1",
+ "serde",
+]
+
 [[package]]
 name = "powerfmt"
 version = "0.2.0"
@@ -5210,6 +5572,16 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "psm"
+version = "0.1.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4dcd034599e63b970727f70d79e02d62390a4a84f7c6b827c27c46d5ac3fa622"
+dependencies = [
+ "ar_archive_writer",
+ "cc",
+]
+
 [[package]]
 name = "pubgrub"
 version = "0.3.0"
@@ -5244,6 +5616,29 @@ dependencies = [
  "pulldown-cmark",
 ]
 
+[[package]]
+name = "pulley-interpreter"
+version = "34.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "be14280b69a9cbb6ada02a7aa5f7b3f1b72d1043b5bc9336990b700525dea6e3"
+dependencies = [
+ "cranelift-bitset 0.121.2",
+ "log",
+ "pulley-macros",
+ "wasmtime-math",
+]
+
+[[package]]
+name = "pulley-macros"
+version = "34.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "076f1be746801280af4c96c4407b5fd1d09cfa53ab27ba0ac7dd8f207e7bbf83"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
+]
+
 [[package]]
 name = "pyo3-build-config"
 version = "0.28.3"
@@ -5457,6 +5852,20 @@ dependencies = [
  "syn 3.0.3",
 ]
 
+[[package]]
+name = "regalloc2"
+version = "0.12.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5216b1837de2149f8bc8e6d5f88a9326b63b8c836ed58ce4a0a29ec736a59734"
+dependencies = [
+ "allocator-api2 0.2.21",
+ "bumpalo",
+ "hashbrown 0.15.5",
+ "log",
+ "rustc-hash",
+ "smallvec",
+]
+
 [[package]]
 name = "regex"
 version = "1.13.1"
@@ -7068,6 +7477,16 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "wasm-encoder"
+version = "0.233.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9679ae3cf7cfa2ca3a327f7fab97f27f3294d402fd1a76ca8ab514e17973e4d3"
+dependencies = [
+ "leb128fmt",
+ "wasmparser 0.233.0",
+]
+
 [[package]]
 name = "wasm-encoder"
 version = "0.247.0"
@@ -7154,6 +7573,19 @@ dependencies = [
  "wasmi_core",
 ]
 
+[[package]]
+name = "wasmparser"
+version = "0.233.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b51cb03afce7964bbfce46602d6cb358726f36430b6ba084ac6020d8ce5bc102"
+dependencies = [
+ "bitflags 2.13.1",
+ "hashbrown 0.15.5",
+ "indexmap 2.14.0",
+ "semver 1.0.28",
+ "serde",
+]
+
 [[package]]
 name = "wasmparser"
 version = "0.239.0"
@@ -7198,6 +7630,17 @@ dependencies = [
  "semver 1.0.28",
 ]
 
+[[package]]
+name = "wasmprinter"
+version = "0.233.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "abf8e5b732895c99b21aa615f1b73352e51bbe2b2cb6c87eae7f990d07c1ac18"
+dependencies = [
+ "anyhow",
+ "termcolor",
+ "wasmparser 0.233.0",
+]
+
 [[package]]
 name = "wasmprinter"
 version = "0.248.0"
@@ -7209,6 +7652,149 @@ dependencies = [
  "wasmparser 0.248.0",
 ]
 
+[[package]]
+name = "wasmtime"
+version = "34.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec10e50038f22ab407fdd8708120b8feed3450a02618efcf26ca47e82122927d"
+dependencies = [
+ "addr2line 0.24.2",
+ "anyhow",
+ "bitflags 2.13.1",
+ "bumpalo",
+ "cc",
+ "cfg-if",
+ "encoding_rs",
+ "hashbrown 0.15.5",
+ "indexmap 2.14.0",
+ "libc",
+ "log",
+ "mach2",
+ "memfd",
+ "object 0.36.7",
+ "once_cell",
+ "postcard",
+ "psm",
+ "pulley-interpreter",
+ "rustix",
+ "semver 1.0.28",
+ "serde",
+ "serde_derive",
+ "smallvec",
+ "target-lexicon",
+ "wasmparser 0.233.0",
+ "wasmtime-asm-macros",
+ "wasmtime-component-macro",
+ "wasmtime-component-util",
+ "wasmtime-cranelift",
+ "wasmtime-environ",
+ "wasmtime-fiber",
+ "wasmtime-jit-icache-coherence",
+ "wasmtime-math",
+ "wasmtime-slab",
+ "wasmtime-versioned-export-macros",
+ "wasmtime-winch",
+ "windows-sys 0.59.0",
+]
+
+[[package]]
+name = "wasmtime-asm-macros"
+version = "34.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4d379cda46d6fd18619e282a75fbb09b70b3d0f166b605f45b4059dfaf9dc6ce"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "wasmtime-component-macro"
+version = "34.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6b08be093e0a876da45f79070c2ada4656f2785eb77c01b86ce60be3153920a5"
+dependencies = [
+ "anyhow",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
+ "wasmtime-component-util",
+ "wasmtime-wit-bindgen",
+ "wit-parser 0.233.0",
+]
+
+[[package]]
+name = "wasmtime-component-util"
+version = "34.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0451ce0dd94a33d0dbd57934ce666a04c2753a5262ca2bc84cf6a67cf5303dc"
+
+[[package]]
+name = "wasmtime-cranelift"
+version = "34.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "15aa836683d7398f13f2f26bbe74c404ceaba66b6bbb96700d6b7f91bec90e03"
+dependencies = [
+ "anyhow",
+ "cfg-if",
+ "cranelift-codegen",
+ "cranelift-control",
+ "cranelift-entity 0.121.2",
+ "cranelift-frontend",
+ "cranelift-native",
+ "gimli 0.31.1",
+ "itertools 0.14.0",
+ "log",
+ "object 0.36.7",
+ "pulley-interpreter",
+ "smallvec",
+ "target-lexicon",
+ "thiserror",
+ "wasmparser 0.233.0",
+ "wasmtime-environ",
+ "wasmtime-math",
+ "wasmtime-versioned-export-macros",
+]
+
+[[package]]
+name = "wasmtime-environ"
+version = "34.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "317081a0cbbb1f749d348b262575608fc082d47ab11b6247bbe9163eeb955777"
+dependencies = [
+ "anyhow",
+ "cranelift-bitset 0.121.2",
+ "cranelift-entity 0.121.2",
+ "gimli 0.31.1",
+ "indexmap 2.14.0",
+ "log",
+ "object 0.36.7",
+ "postcard",
+ "semver 1.0.28",
+ "serde",
+ "serde_derive",
+ "smallvec",
+ "target-lexicon",
+ "wasm-encoder 0.233.0",
+ "wasmparser 0.233.0",
+ "wasmprinter 0.233.0",
+ "wasmtime-component-util",
+]
+
+[[package]]
+name = "wasmtime-fiber"
+version = "34.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6763b33eceefc443f6477d84dc8751df5f23d280d7e01f28339fa3ec4b00ff13"
+dependencies = [
+ "anyhow",
+ "cc",
+ "cfg-if",
+ "libc",
+ "rustix",
+ "wasmtime-asm-macros",
+ "wasmtime-versioned-export-macros",
+ "windows-sys 0.59.0",
+]
+
 [[package]]
 name = "wasmtime-internal-core"
 version = "48.0.1"
@@ -7219,6 +7805,73 @@ dependencies = [
  "libm",
 ]
 
+[[package]]
+name = "wasmtime-jit-icache-coherence"
+version = "34.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ea6b740d1a35f2cebfe88e013ac8a4a84ff8dabc3a392df920abf554e871cf2"
+dependencies = [
+ "anyhow",
+ "cfg-if",
+ "libc",
+ "windows-sys 0.59.0",
+]
+
+[[package]]
+name = "wasmtime-math"
+version = "34.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62fa317691aedc64aae3a86b3d786e4b2b0007bc0b56e0b6098b8b5a85ab2134"
+dependencies = [
+ "libm",
+]
+
+[[package]]
+name = "wasmtime-slab"
+version = "34.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "60a06819d24370273021054b50589e3078e7f5cfac15515e58b3fbbebf5e5b39"
+
+[[package]]
+name = "wasmtime-versioned-export-macros"
+version = "34.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ca100ed168ffc9b37aefc07a5be440645eab612a2ff6e2ff884e8cc3740e666"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
+]
+
+[[package]]
+name = "wasmtime-winch"
+version = "34.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "595f51430606a7b5578f34e0d7c73dca52a22ed24756f2ba9d4d0c1bde8631af"
+dependencies = [
+ "anyhow",
+ "cranelift-codegen",
+ "gimli 0.31.1",
+ "object 0.36.7",
+ "target-lexicon",
+ "wasmparser 0.233.0",
+ "wasmtime-cranelift",
+ "wasmtime-environ",
+ "winch-codegen",
+]
+
+[[package]]
+name = "wasmtime-wit-bindgen"
+version = "34.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "233fdcb96f9097be697319ba647ef42bdbdb40e89f04c8ae3713103813b5b793"
+dependencies = [
+ "anyhow",
+ "heck",
+ "indexmap 2.14.0",
+ "wit-parser 0.233.0",
+]
+
 [[package]]
 name = "wast"
 version = "256.0.0"
@@ -7282,6 +7935,26 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
+[[package]]
+name = "winch-codegen"
+version = "34.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cdf007d7940f62127ce4f33a8aa92dadedfdc78c3860a057e06c8c24e26e180d"
+dependencies = [
+ "anyhow",
+ "cranelift-assembler-x64",
+ "cranelift-codegen",
+ "gimli 0.31.1",
+ "regalloc2",
+ "smallvec",
+ "target-lexicon",
+ "thiserror",
+ "wasmparser 0.233.0",
+ "wasmtime-cranelift",
+ "wasmtime-environ",
+ "wasmtime-math",
+]
+
 [[package]]
 name = "wincode"
 version = "0.6.1"
@@ -7404,6 +8077,15 @@ dependencies = [
  "windows-targets",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.59.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
+dependencies = [
+ "windows-targets",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.61.2"
@@ -7518,7 +8200,7 @@ checksum = "02dee27a2dc20d1008016c742ec9fc6ea498492994ba3750be7454cbc97ff04c"
 dependencies = [
  "anyhow",
  "heck",
- "wit-parser",
+ "wit-parser 0.247.0",
 ]
 
 [[package]]
@@ -7568,7 +8250,25 @@ dependencies = [
  "wasm-encoder 0.247.0",
  "wasm-metadata",
  "wasmparser 0.247.0",
- "wit-parser",
+ "wit-parser 0.247.0",
+]
+
+[[package]]
+name = "wit-parser"
+version = "0.233.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f22f1cd55247a2e616870b619766e9522df36b7abafbb29bbeb34b7a9da7e9f0"
+dependencies = [
+ "anyhow",
+ "id-arena",
+ "indexmap 2.14.0",
+ "log",
+ "semver 1.0.28",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "unicode-xid",
+ "wasmparser 0.233.0",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 48e765c5ec..ee0e568878 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -34,6 +34,13 @@ members = [
     "sdk/base-macros",
     "sdk/base-sys",
     "sdk/build-script-support",
+    "sdk/note-bindings",
+    "sdk/note-bindings/macros",
+    "sdk/note-codec",
+    "sdk/note-codec/macros",
+    "sdk/note-codec/wit-crate",
+    "sdk/note-schema",
+    "sdk/note-schema/codegen",
     "sdk/sdk",
     "sdk/stdlib-sys",
     "sdk/tx-script-args",
@@ -52,7 +59,6 @@ exclude = [
     # `name = "{{crate_name}}"`, and a nested workspace, neither of which Cargo
     # should ever try to interpret as part of this workspace.
     "extra",
-    "sdk/.cargo",
     "tests/",
     "examples",
     "tools/fuzza-agent",
@@ -139,6 +145,14 @@ serde = { version = "1.0", default-features = false, features = [
 ] }
 serde_json = { version = "1.0", default-features = false, features = ["alloc"] }
 heck = "0.5"
+prettyplease = "0.2"
+proc-macro-crate = "3.5"
+# Deliberate skew: WIT emission (wit-bindgen-core 0.57) and attach/consume validation
+# (workspace wit-parser/wit-component) parse with 0.247; 0.233 enters only through wasmtime's
+# component bindgen macros on the codec-consumption path.
+wit-bindgen-core = "0.57"
+wit-bindgen-rust = { version = "0.57", default-features = false }
+wit-bindgen = { version = "0.57", default-features = false, features = ["macros"] }
 smallvec = { version = "1.15", default-features = false, features = [
     "union",
     "const_generics",
@@ -160,6 +174,13 @@ wasmparser = { version = "^0.248", default-features = false, features = [
     "simd",
 ] }
 wit-component = "0.247"
+wit-parser = "0.247"
+wasmtime = { version = "34.0.0", default-features = false, features = [
+    "component-model",
+    "cranelift",
+    "runtime",
+    "std",
+] }
 
 # Workspace crates
 midenc-codegen-masm = { version = "0.10.0", path = "codegen/masm" }
@@ -186,6 +207,11 @@ midenc-integration-test-support = { path = "tests/support" }
 midenc-expect-test = { path = "tools/expect-test" }
 miden-base-sys = { version = "0.14.0", path = "sdk/base-sys" }
 miden-field-repr = { version = "0.14.0", path = "sdk/field-repr/repr" }
+miden-note-bindings-macros = { version = "0.14.0", path = "sdk/note-bindings/macros" }
+miden-note-codec-macros = { version = "0.14.0", path = "sdk/note-codec/macros" }
+miden-note-codec-wit = { version = "0.14.0", path = "sdk/note-codec/wit-crate" }
+miden-note-schema = { version = "0.14.0", path = "sdk/note-schema" }
+miden-note-schema-codegen = { version = "0.14.0", path = "sdk/note-schema/codegen" }
 miden-stdlib-sys = { version = "0.14.0", path = "sdk/stdlib-sys" }
 miden-tx-script-args = { version = "0.14.0", path = "sdk/tx-script-args" }
 
diff --git a/examples/auth-component-no-auth/Cargo.lock b/examples/auth-component-no-auth/Cargo.lock
index f3ef9c100e..7dffb808b1 100644
--- a/examples/auth-component-no-auth/Cargo.lock
+++ b/examples/auth-component-no-auth/Cargo.lock
@@ -951,7 +951,7 @@ checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
 [[package]]
 name = "miden"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base",
  "miden-base-macros",
@@ -1043,7 +1043,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base-sys",
  "miden-stdlib-sys",
@@ -1051,7 +1051,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-macros"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "heck",
  "miden-assembly-syntax",
@@ -1072,7 +1072,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field-repr",
  "miden-stdlib-sys",
@@ -1229,7 +1229,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr-derive",
@@ -1237,7 +1237,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr-derive"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1484,11 +1484,11 @@ dependencies = [
 
 [[package]]
 name = "miden-sdk-alloc"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-sdk-build-script-support"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-serde-utils"
@@ -1525,14 +1525,14 @@ dependencies = [
 
 [[package]]
 name = "miden-stdlib-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
 ]
 
 [[package]]
 name = "miden-tx-script-args"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr",
@@ -1604,7 +1604,7 @@ dependencies = [
 
 [[package]]
 name = "midenc-frontend-wasm-metadata"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-mast-package",
  "serde",
diff --git a/examples/auth-component-rpo-falcon512/Cargo.lock b/examples/auth-component-rpo-falcon512/Cargo.lock
index 964a353654..b08b7fbf55 100644
--- a/examples/auth-component-rpo-falcon512/Cargo.lock
+++ b/examples/auth-component-rpo-falcon512/Cargo.lock
@@ -951,7 +951,7 @@ checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
 [[package]]
 name = "miden"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base",
  "miden-base-macros",
@@ -1043,7 +1043,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base-sys",
  "miden-stdlib-sys",
@@ -1051,7 +1051,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-macros"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "heck",
  "miden-assembly-syntax",
@@ -1072,7 +1072,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field-repr",
  "miden-stdlib-sys",
@@ -1229,7 +1229,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr-derive",
@@ -1237,7 +1237,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr-derive"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1484,11 +1484,11 @@ dependencies = [
 
 [[package]]
 name = "miden-sdk-alloc"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-sdk-build-script-support"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-serde-utils"
@@ -1525,14 +1525,14 @@ dependencies = [
 
 [[package]]
 name = "miden-stdlib-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
 ]
 
 [[package]]
 name = "miden-tx-script-args"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr",
@@ -1604,7 +1604,7 @@ dependencies = [
 
 [[package]]
 name = "midenc-frontend-wasm-metadata"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-mast-package",
  "serde",
diff --git a/examples/basic-wallet-tx-script/Cargo.lock b/examples/basic-wallet-tx-script/Cargo.lock
index 51651bd2e6..84e6bb00b1 100644
--- a/examples/basic-wallet-tx-script/Cargo.lock
+++ b/examples/basic-wallet-tx-script/Cargo.lock
@@ -951,7 +951,7 @@ checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
 [[package]]
 name = "miden"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base",
  "miden-base-macros",
@@ -1043,7 +1043,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base-sys",
  "miden-stdlib-sys",
@@ -1051,7 +1051,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-macros"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "heck",
  "miden-assembly-syntax",
@@ -1072,7 +1072,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field-repr",
  "miden-stdlib-sys",
@@ -1229,7 +1229,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr-derive",
@@ -1237,7 +1237,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr-derive"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1484,11 +1484,11 @@ dependencies = [
 
 [[package]]
 name = "miden-sdk-alloc"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-sdk-build-script-support"
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index c9648c396c..35e66bf1fe 100644
--- a/examples/basic-wallet/Cargo.lock
+++ b/examples/basic-wallet/Cargo.lock
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diff --git a/examples/dex-note-codec/Cargo.toml b/examples/dex-note-codec/Cargo.toml
new file mode 100644
index 0000000000..875476c045
--- /dev/null
+++ b/examples/dex-note-codec/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+name = "dex-note-codec"
+version = "0.1.0"
+edition = "2024"
+publish = false
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+miden-note-codec = { path = "../../sdk/note-codec" }
diff --git a/examples/dex-note-codec/src/lib.rs b/examples/dex-note-codec/src/lib.rs
new file mode 100644
index 0000000000..6deafba9dd
--- /dev/null
+++ b/examples/dex-note-codec/src/lib.rs
@@ -0,0 +1,142 @@
+//! Author-side codecs for the DEX note storage schema.
+
+use miden_note_codec::AuthorTypeCodec;
+
+miden_note_codec::from_project!("../dex-note");
+
+#[miden_note_codec::note_codec]
+impl AuthorTypeCodec for LimitPrice {
+    fn parse(value: &str) -> Result<Self, String> {
+        parse_limit_price(value)
+    }
+
+    fn display(&self) -> String {
+        display_limit_price(self)
+    }
+
+    fn validate(&self) -> Result<(), String> {
+        if self.denominator == 0 {
+            Err("the limit-price denominator must not be zero".to_owned())
+        } else {
+            Ok(())
+        }
+    }
+}
+
+miden_note_codec::export_codecs!();
+
+/// Parses a fraction or finite decimal limit price.
+fn parse_limit_price(value: &str) -> Result<LimitPrice, String> {
+    let (numerator, denominator) = if let Some((numerator, denominator)) = value.split_once('/') {
+        (parse_part(numerator, "numerator")?, parse_part(denominator, "denominator")?)
+    } else if let Some((whole, fraction)) = value.split_once('.') {
+        if whole.is_empty() || fraction.is_empty() || fraction.contains('.') {
+            return Err(format!("invalid decimal limit price `{value}`"));
+        }
+        let whole = parse_part(whole, "whole part")?;
+        let fraction_value = parse_part(fraction, "fractional part")?;
+        let scale = u32::try_from(fraction.len())
+            .map_err(|_| format!("decimal limit price `{value}` has too many digits"))?;
+        let denominator = 10_u64
+            .checked_pow(scale)
+            .ok_or_else(|| format!("decimal limit price `{value}` has too many digits"))?;
+        let numerator = whole
+            .checked_mul(denominator)
+            .and_then(|whole| whole.checked_add(fraction_value))
+            .ok_or_else(|| format!("decimal limit price `{value}` is too large"))?;
+        (numerator, denominator)
+    } else {
+        (parse_part(value, "value")?, 1)
+    };
+    let divisor = greatest_common_divisor(numerator, denominator);
+    let (numerator, denominator) = if divisor > 1 {
+        (numerator / divisor, denominator / divisor)
+    } else {
+        (numerator, denominator)
+    };
+    Ok(LimitPrice {
+        numerator,
+        denominator,
+    })
+}
+
+/// Parses one unsigned integer part.
+fn parse_part(value: &str, name: &str) -> Result<u64, String> {
+    if value.is_empty() {
+        return Err(format!("the limit-price {name} is empty"));
+    }
+    value
+        .parse::<u64>()
+        .map_err(|error| format!("invalid limit-price {name} `{value}`: {error}"))
+}
+
+/// Displays finite fractions as decimals and other fractions as ratios.
+fn display_limit_price(value: &LimitPrice) -> String {
+    if value.denominator == 0 {
+        // Guard the factor loop against a parsed-but-unvalidated zero denominator: it would
+        // otherwise never terminate.
+        return format!("{}/{}", value.numerator, value.denominator);
+    }
+    let divisor = greatest_common_divisor(value.numerator, value.denominator);
+    let numerator = value.numerator / divisor;
+    let denominator = value.denominator / divisor;
+    let mut remainder = denominator;
+    let mut twos = 0_u32;
+    let mut fives = 0_u32;
+    while remainder.is_multiple_of(2) {
+        remainder /= 2;
+        twos += 1;
+    }
+    while remainder.is_multiple_of(5) {
+        remainder /= 5;
+        fives += 1;
+    }
+    if remainder != 1 {
+        return format!("{numerator}/{denominator}");
+    }
+
+    let scale = twos.max(fives);
+    let Some(power) = 10_u64.checked_pow(scale) else {
+        return format!("{numerator}/{denominator}");
+    };
+    let Some(scaled) = numerator.checked_mul(power / denominator) else {
+        return format!("{numerator}/{denominator}");
+    };
+    if scale == 0 {
+        return scaled.to_string();
+    }
+    let whole = scaled / power;
+    let mut fraction = format!("{:0width$}", scaled % power, width = scale as usize);
+    while fraction.ends_with('0') {
+        fraction.pop();
+    }
+    format!("{whole}.{fraction}")
+}
+
+/// Returns the greatest common divisor of two integers.
+fn greatest_common_divisor(mut left: u64, mut right: u64) -> u64 {
+    while right != 0 {
+        (left, right) = (right, left % right);
+    }
+    left.max(1)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn parses_fraction_and_decimal_forms() {
+        let fraction = LimitPrice::parse("3/2").unwrap();
+        let decimal = LimitPrice::parse("1.5").unwrap();
+        assert_eq!(fraction, decimal);
+        assert_eq!(fraction.display(), "1.5");
+        fraction.validate().unwrap();
+    }
+
+    #[test]
+    fn rejects_zero_denominator_during_validation() {
+        let value = LimitPrice::parse("1/0").unwrap();
+        assert!(value.validate().unwrap_err().contains("denominator"));
+    }
+}
diff --git a/examples/dex-note/.cargo/config.toml b/examples/dex-note/.cargo/config.toml
new file mode 100644
index 0000000000..82112cc9a5
--- /dev/null
+++ b/examples/dex-note/.cargo/config.toml
@@ -0,0 +1,8 @@
+# This example is intended to be built as Wasm for the Miden VM.
+
+[build]
+target = "wasm32-wasip2"
+
+[target.wasm32-wasip2]
+# Force-enable `cfg(miden)` for Miden-VM-targeted builds (including editor/LSP workflows).
+rustflags = ["--cfg", "miden"]
diff --git a/examples/dex-note/.gitignore b/examples/dex-note/.gitignore
new file mode 100644
index 0000000000..ea8c4bf7f3
--- /dev/null
+++ b/examples/dex-note/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/examples/dex-note/Cargo.lock b/examples/dex-note/Cargo.lock
new file mode 100644
index 0000000000..438d3dddfa
--- /dev/null
+++ b/examples/dex-note/Cargo.lock
@@ -0,0 +1,3172 @@
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diff --git a/examples/dex-note/Cargo.toml b/examples/dex-note/Cargo.toml
new file mode 100644
index 0000000000..e3f9cc6ab3
--- /dev/null
+++ b/examples/dex-note/Cargo.toml
@@ -0,0 +1,22 @@
+cargo-features = ["trim-paths"]
+
+[package]
+name = "dex-note"
+version = "0.1.0"
+edition = "2024"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+miden = { path = "../../sdk/sdk" }
+miden-field-repr = { path = "../../sdk/field-repr/repr" }
+
+[build-dependencies]
+miden-sdk-build-script-support = { path = "../../sdk/build-script-support" }
+
+[profile.release]
+trim-paths = ["diagnostics", "object"]
+
+[profile.dev]
+trim-paths = ["diagnostics", "object"]
diff --git a/examples/dex-note/build.rs b/examples/dex-note/build.rs
new file mode 100644
index 0000000000..1db40a34c2
--- /dev/null
+++ b/examples/dex-note/build.rs
@@ -0,0 +1,3 @@
+fn main() {
+    miden_sdk_build_script_support::prepare_package_cache();
+}
diff --git a/examples/dex-note/cargo-generate.toml b/examples/dex-note/cargo-generate.toml
new file mode 100644
index 0000000000..26029f3e76
--- /dev/null
+++ b/examples/dex-note/cargo-generate.toml
@@ -0,0 +1,2 @@
+[template]
+ignore = ["target"]
diff --git a/examples/dex-note/miden-project.toml b/examples/dex-note/miden-project.toml
new file mode 100644
index 0000000000..c391a6b534
--- /dev/null
+++ b/examples/dex-note/miden-project.toml
@@ -0,0 +1,17 @@
+[package]
+name = "dex-note"
+version = "0.1.0"
+
+[lib]
+kind = "note"
+namespace = "miden:dex-note/miden-dex-note@0.1.0"
+path = "src/lib.rs"
+
+[dependencies]
+miden-core = "*"
+miden-protocol = "*"
+basic-wallet = { path = "../basic-wallet" }
+
+# The `midenc` namespace table groups compiler plugin configuration.
+[package.metadata.midenc.note-codec]
+crate = "../dex-note-codec"
diff --git a/examples/dex-note/rust-toolchain.toml b/examples/dex-note/rust-toolchain.toml
new file mode 100644
index 0000000000..9148f62f16
--- /dev/null
+++ b/examples/dex-note/rust-toolchain.toml
@@ -0,0 +1,5 @@
+[toolchain]
+channel = "nightly-2026-09-01"
+components = ["rustfmt", "rust-src", "clippy"]
+targets = ["wasm32-wasip2"]
+profile = "minimal"
diff --git a/examples/dex-note/src/lib.rs b/examples/dex-note/src/lib.rs
new file mode 100644
index 0000000000..8456e726d2
--- /dev/null
+++ b/examples/dex-note/src/lib.rs
@@ -0,0 +1,45 @@
+//! DEX note with a custom limit-price storage type.
+
+#![no_std]
+#![feature(alloc_error_handler)]
+
+use miden::{AccountId, Word, account, active_note, export_type, note};
+use miden_field_repr::{FromFeltRepr, ToFeltRepr};
+
+/// A rational limit price.
+#[export_type]
+#[derive(FromFeltRepr, ToFeltRepr)]
+pub struct LimitPrice {
+    /// The price numerator.
+    pub numerator: u64,
+    /// The price denominator.
+    pub denominator: u64,
+}
+
+/// Storage for one DEX note.
+#[note]
+struct DexNote {
+    /// The account that can consume this note.
+    target: AccountId,
+    /// The exchange limit price.
+    price: LimitPrice,
+}
+
+/// Native account interface used by the note script.
+#[account(basic_wallet::BasicWallet)]
+pub struct Wallet;
+
+#[note]
+impl DexNote {
+    /// Sends every note asset to the target account.
+    #[note_script]
+    pub fn script(self, _arg: Word, account: &mut Wallet) {
+        assert_eq!(account.get_id(), self.target);
+        let _limit_price = self.price;
+
+        let assets = active_note::get_initial_assets();
+        for asset in assets {
+            account.receive_asset(asset);
+        }
+    }
+}
diff --git a/examples/fibonacci/Cargo.lock b/examples/fibonacci/Cargo.lock
index 430fec63c6..75a9b2d1f0 100644
--- a/examples/fibonacci/Cargo.lock
+++ b/examples/fibonacci/Cargo.lock
@@ -11,4 +11,4 @@ dependencies = [
 
 [[package]]
 name = "miden-sdk-build-script-support"
-version = "0.14.0-rc.1"
+version = "0.14.0"
diff --git a/examples/is-prime/Cargo.lock b/examples/is-prime/Cargo.lock
index bcb4d8e62f..67592bf65c 100644
--- a/examples/is-prime/Cargo.lock
+++ b/examples/is-prime/Cargo.lock
@@ -11,4 +11,4 @@ dependencies = [
 
 [[package]]
 name = "miden-sdk-build-script-support"
-version = "0.14.0-rc.1"
+version = "0.14.0"
diff --git a/examples/p2id-note/Cargo.lock b/examples/p2id-note/Cargo.lock
index 0d3c4ef203..b4b60a3a81 100644
--- a/examples/p2id-note/Cargo.lock
+++ b/examples/p2id-note/Cargo.lock
@@ -943,7 +943,7 @@ checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
 [[package]]
 name = "miden"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base",
  "miden-base-macros",
@@ -1035,7 +1035,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base-sys",
  "miden-stdlib-sys",
@@ -1043,7 +1043,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-macros"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "heck",
  "miden-assembly-syntax",
@@ -1064,7 +1064,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field-repr",
  "miden-stdlib-sys",
@@ -1221,7 +1221,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr-derive",
@@ -1229,7 +1229,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr-derive"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1476,11 +1476,11 @@ dependencies = [
 
 [[package]]
 name = "miden-sdk-alloc"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-sdk-build-script-support"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-serde-utils"
@@ -1517,14 +1517,14 @@ dependencies = [
 
 [[package]]
 name = "miden-stdlib-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
 ]
 
 [[package]]
 name = "miden-tx-script-args"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr",
@@ -1596,7 +1596,7 @@ dependencies = [
 
 [[package]]
 name = "midenc-frontend-wasm-metadata"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-mast-package",
  "serde",
diff --git a/examples/p2id-tx-script/Cargo.lock b/examples/p2id-tx-script/Cargo.lock
index b86fffb4bb..2279796154 100644
--- a/examples/p2id-tx-script/Cargo.lock
+++ b/examples/p2id-tx-script/Cargo.lock
@@ -933,7 +933,7 @@ checksum = "88904434abc2901f197fe8cc55f0445e7ded921dba5911dad2e2b39b48e663c4"
 
 [[package]]
 name = "miden"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base",
  "miden-base-macros",
@@ -1025,7 +1025,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base-sys",
  "miden-stdlib-sys",
@@ -1033,7 +1033,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-macros"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "heck",
  "miden-assembly-syntax",
@@ -1054,7 +1054,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field-repr",
  "miden-stdlib-sys",
@@ -1211,7 +1211,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr-derive",
@@ -1219,7 +1219,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr-derive"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1466,11 +1466,11 @@ dependencies = [
 
 [[package]]
 name = "miden-sdk-alloc"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-sdk-build-script-support"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-serde-utils"
@@ -1507,14 +1507,14 @@ dependencies = [
 
 [[package]]
 name = "miden-stdlib-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
 ]
 
 [[package]]
 name = "miden-tx-script-args"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr",
@@ -1586,7 +1586,7 @@ dependencies = [
 
 [[package]]
 name = "midenc-frontend-wasm-metadata"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-mast-package",
  "serde",
diff --git a/examples/p2ide-note/Cargo.lock b/examples/p2ide-note/Cargo.lock
index 91c3b9cfcb..4afbc389d5 100644
--- a/examples/p2ide-note/Cargo.lock
+++ b/examples/p2ide-note/Cargo.lock
@@ -943,7 +943,7 @@ checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
 [[package]]
 name = "miden"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base",
  "miden-base-macros",
@@ -1035,7 +1035,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base-sys",
  "miden-stdlib-sys",
@@ -1043,7 +1043,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-macros"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "heck",
  "miden-assembly-syntax",
@@ -1064,7 +1064,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field-repr",
  "miden-stdlib-sys",
@@ -1221,7 +1221,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr-derive",
@@ -1229,7 +1229,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr-derive"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1476,11 +1476,11 @@ dependencies = [
 
 [[package]]
 name = "miden-sdk-alloc"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-sdk-build-script-support"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-serde-utils"
@@ -1517,14 +1517,14 @@ dependencies = [
 
 [[package]]
 name = "miden-stdlib-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
 ]
 
 [[package]]
 name = "miden-tx-script-args"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr",
@@ -1596,7 +1596,7 @@ dependencies = [
 
 [[package]]
 name = "midenc-frontend-wasm-metadata"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-mast-package",
  "serde",
diff --git a/examples/storage-example/Cargo.lock b/examples/storage-example/Cargo.lock
index d8e4262ae2..c6e8f74861 100644
--- a/examples/storage-example/Cargo.lock
+++ b/examples/storage-example/Cargo.lock
@@ -943,7 +943,7 @@ checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
 [[package]]
 name = "miden"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base",
  "miden-base-macros",
@@ -1035,7 +1035,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base-sys",
  "miden-stdlib-sys",
@@ -1043,7 +1043,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-macros"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "heck",
  "miden-assembly-syntax",
@@ -1064,7 +1064,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field-repr",
  "miden-stdlib-sys",
@@ -1221,7 +1221,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr-derive",
@@ -1229,7 +1229,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr-derive"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1476,11 +1476,11 @@ dependencies = [
 
 [[package]]
 name = "miden-sdk-alloc"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-sdk-build-script-support"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-serde-utils"
@@ -1517,14 +1517,14 @@ dependencies = [
 
 [[package]]
 name = "miden-stdlib-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
 ]
 
 [[package]]
 name = "miden-tx-script-args"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr",
@@ -1596,7 +1596,7 @@ dependencies = [
 
 [[package]]
 name = "midenc-frontend-wasm-metadata"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-mast-package",
  "serde",
diff --git a/extra/templates/project/.claude/skills/rust-sdk-patterns/SKILL.md b/extra/templates/project/.claude/skills/rust-sdk-patterns/SKILL.md
index a3efcea92e..ae4797d53f 100644
--- a/extra/templates/project/.claude/skills/rust-sdk-patterns/SKILL.md
+++ b/extra/templates/project/.claude/skills/rust-sdk-patterns/SKILL.md
@@ -139,7 +139,7 @@ A note script reads from `active_note::*` and forwards work to a public account-
 
 The `#[note]` macro generates `TryFrom<&[Felt]>` for the note struct, so the note's serialized storage is deserialized into typed fields before the script runs. The `#[note_script]` method receives the deserialized note as `self` (by value) and never indexes a raw Felt slice manually. Alongside the required `Word` arg, the method may optionally accept a `&Account` or `&mut Account` parameter. See [compiler/sdk/base-macros/src/lib.rs](https://github.com/0xMiden/compiler/blob/main/sdk/base-macros/src/lib.rs) for the macro contract and [compiler/sdk/base-macros/src/note.rs](https://github.com/0xMiden/compiler/blob/main/sdk/base-macros/src/note.rs) for the generated deserialization (each named field is read via `<T as miden::felt_repr::FromFeltRepr>::from_felt_repr(...)` and EOF is asserted at the end).
 
-Supported field types include `Felt`, the unsigned integer scalars (`u64`, `u32`, `u8`), `bool`, `Option<T>`, and `Vec<T>` via the `FromFeltRepr` trait (`compiler/sdk/field-repr/repr/src/lib.rs`), plus any user type that opts in with `#[derive(FromFeltRepr)]` (this is how `AccountId` supports the macro - see `compiler/sdk/base-sys/src/bindings/types.rs`). Do **not** use `Asset` or `Word` directly as note struct fields; those types do not currently derive `FromFeltRepr`. If you need asset-shaped data inside the note, flatten it into supported scalar fields and reconstruct inside the script, or keep it on the side as a separate `active_note::get_assets()` read.
+The supported field types are `Felt`, `Word`, the SDK core-type records that implement the felt-representation traits (`AccountId`, `Asset`, `Recipient`, `Tag`, `NoteType` - see `compiler/sdk/base-sys/src/bindings/types.rs`), the unsigned integer scalars (`u64`, `u32`, `u8`), `bool`, `Option<T>` over any of those, and your own records or enums that are marked `#[export_type]` and derive both felt-representation traits with `#[derive(FromFeltRepr, ToFeltRepr)]`. A custom field type must be declared **before** the `#[note]` struct; otherwise the macro reports that the type "needs #[export_type] on its definition before the #[note] struct". See [compiler/examples/dex-note/src/lib.rs](https://github.com/0xMiden/compiler/blob/main/examples/dex-note/src/lib.rs) for a custom `LimitPrice` field type in the required form. `Vec<T>` is not supported: the note storage schema needs a stable, named position for each stored value, so a dynamic vector is a hard error. Two more rules follow from the schema: a `#[note]` struct must have named fields or be a unit struct (tuple structs are rejected), and a crate may contain only one `#[note]` struct (move each extra note struct into its own crate).
 
 For Cargo.toml wiring (cross-component dependencies + bindings import), see "Cross-Component Dependencies" above. See [increment-note/src/lib.rs](../../../contracts/increment-note/src/lib.rs) for the project-template's local example of the `#[note] struct + #[note] impl` macro form.
 
diff --git a/frontend/wasm/src/lib.rs b/frontend/wasm/src/lib.rs
index 9957433030..99cdaf7498 100644
--- a/frontend/wasm/src/lib.rs
+++ b/frontend/wasm/src/lib.rs
@@ -79,3 +79,28 @@ pub(crate) fn supported_features() -> WasmFeatures {
 pub(crate) fn supported_component_model_features() -> WasmFeatures {
     supported_features() | WasmFeatures::COMPONENT_MODEL
 }
+
+#[cfg(test)]
+mod tests {
+    use midenc_frontend_wasm_metadata::WASM_NOTE_STORAGE_SCHEMA_CUSTOM_SECTION_NAME;
+
+    use super::*;
+
+    /// A `#[note]` crate compiled as a raw core module keeps its schema section: the
+    /// translation wraps the module as a component and propagates the captured sections.
+    #[test]
+    fn core_module_propagates_note_storage_schema_section() {
+        let wat = format!(
+            r#"(module (@custom "{WASM_NOTE_STORAGE_SCHEMA_CUSTOM_SECTION_NAME}" "schema"))"#
+        );
+        let wasm = wat::parse_str(wat).expect("core module WAT must parse");
+        let context = Rc::new(Context::default());
+        let output = translate(&wasm, &WasmTranslationConfig::default(), context)
+            .expect("a core module with a schema section must translate");
+        assert_eq!(
+            output.sections.note_storage_schema.as_deref(),
+            Some(b"schema".as_slice()),
+            "the schema section must be propagated into the frontend output"
+        );
+    }
+}
diff --git a/frontend/wasm/src/module/module_env.rs b/frontend/wasm/src/module/module_env.rs
index ad9feb054a..496bfeb8bd 100644
--- a/frontend/wasm/src/module/module_env.rs
+++ b/frontend/wasm/src/module/module_env.rs
@@ -6,7 +6,8 @@ use cranelift_entity::{PrimaryMap, packed_option::ReservedValue};
 use midenc_frontend_wasm_metadata::{
     FrontendMetadata, PackageSections, WASM_ACCOUNT_COMPONENT_METADATA_CUSTOM_SECTION_NAME,
     WASM_COMPONENT_WIT_CUSTOM_SECTION_NAME, WASM_FRONTEND_METADATA_CUSTOM_SECTION_NAME,
-    count_top_level_wit_packages, decode_section,
+    WASM_NOTE_STORAGE_SCHEMA_CUSTOM_SECTION_NAME, count_top_level_wit_packages, decode_section,
+    trim_trailing_nuls,
 };
 use midenc_hir::{FxHashMap, FxHashSet, Ident, interner::Symbol};
 use midenc_session::diagnostics::{DiagnosticsHandler, IntoDiagnostic, Report, Severity};
@@ -96,6 +97,8 @@ pub struct ParsedModule<'data> {
     pub account_component_metadata_bytes: Option<&'data [u8]>,
     /// The component's public WIT source emitted by the `#[component]` macro.
     pub component_wit_bytes: Option<&'data [u8]>,
+    /// The note storage schema emitted by the `#[note]` macro.
+    pub note_storage_schema_bytes: Option<&'data [u8]>,
     /// Frontend-only component metadata entries emitted by SDK macros (empty when none present).
     pub component_frontend_metadata: Vec<FrontendMetadata>,
 }
@@ -149,6 +152,7 @@ pub(crate) fn collect_package_sections<'a, 'data: 'a>(
 ) -> WasmResult<PackageSections> {
     let mut account_component_metadata = None;
     let mut component_wit = None;
+    let mut note_storage_schema = None;
     for module in modules {
         merge_section_payload(
             &mut account_component_metadata,
@@ -162,10 +166,17 @@ pub(crate) fn collect_package_sections<'a, 'data: 'a>(
             WASM_COMPONENT_WIT_CUSTOM_SECTION_NAME,
             diagnostics,
         )?;
+        merge_section_payload(
+            &mut note_storage_schema,
+            module.note_storage_schema_bytes,
+            WASM_NOTE_STORAGE_SCHEMA_CUSTOM_SECTION_NAME,
+            diagnostics,
+        )?;
     }
     Ok(PackageSections {
         account_component_metadata: account_component_metadata.map(<[u8]>::to_vec),
         component_wit: component_wit.map(<[u8]>::to_vec),
+        note_storage_schema: note_storage_schema.map(<[u8]>::to_vec),
     })
 }
 
@@ -451,6 +462,28 @@ impl<'a, 'data> ModuleEnvironment<'a, 'data> {
                         .into_report());
                 }
             }
+            Payload::CustomSection(s)
+                if s.name() == WASM_NOTE_STORAGE_SCHEMA_CUSTOM_SECTION_NAME =>
+            {
+                core::str::from_utf8(trim_trailing_nuls(s.data())).map_err(|err| {
+                    diagnostics
+                        .diagnostic(Severity::Error)
+                        .with_message(format!(
+                            "failed to parse note storage schema section as UTF-8: {err}"
+                        ))
+                        .into_report()
+                })?;
+                if self.result.note_storage_schema_bytes.replace(s.data()).is_some() {
+                    return Err(diagnostics
+                        .diagnostic(Severity::Error)
+                        .with_message(format!(
+                            "wasm error: multiple \
+                             '{WASM_NOTE_STORAGE_SCHEMA_CUSTOM_SECTION_NAME}' custom sections \
+                             were found; only one is allowed per core Wasm module"
+                        ))
+                        .into_report());
+                }
+            }
             Payload::CustomSection(s) if s.name() == WASM_FRONTEND_METADATA_CUSTOM_SECTION_NAME => {
                 let metadata = decode_section(s.data()).map_err(|err| {
                     diagnostics
diff --git a/hir-macros/src/operation.rs b/hir-macros/src/operation.rs
index 6376833969..90e8ec2014 100644
--- a/hir-macros/src/operation.rs
+++ b/hir-macros/src/operation.rs
@@ -376,7 +376,7 @@ impl OpDefinition {
                     };
                     let symbol = Symbol {
                         name: field_name.clone(),
-                        ty: SymbolType::Concrete(field_ty),
+                        ty: SymbolType::Concrete(Box::new(field_ty)),
                     };
                     create_params.push(OpCreateParam {
                         param_ty: OpCreateParamType::Symbol(symbol.clone()),
@@ -2955,7 +2955,7 @@ pub enum SymbolType {
     /// Any `Symbol + CallableOpInterface` implementation can be used
     Callable,
     /// Only the specific concrete type can be used, it must implement `Op` and `Symbol` traits
-    Concrete(syn::Type),
+    Concrete(Box<syn::Type>),
     /// Any implementation of the provided trait can be used.
     ///
     /// The given trait type _must_ have `Symbol` as a supertrait.
diff --git a/midenc-compile/Cargo.toml b/midenc-compile/Cargo.toml
index 95c03398ff..60f8a6e91c 100644
--- a/midenc-compile/Cargo.toml
+++ b/midenc-compile/Cargo.toml
@@ -25,8 +25,13 @@ std = [
     "midenc-session/std",
     "dep:cargo_metadata",
     "dep:clap",
+    "dep:miden-note-codec-wit",
+    "dep:miden-note-schema",
+    "dep:sha2",
     "dep:toml_edit",
     "dep:wat",
+    "dep:wit-component",
+    "dep:wit-parser",
 ]
 
 [dependencies]
@@ -37,6 +42,8 @@ midenc-codegen-masm.workspace = true
 miden-assembly.workspace = true
 miden-assembly-syntax.workspace = true
 miden-mast-package.workspace = true
+miden-note-codec-wit = { workspace = true, optional = true }
+miden-note-schema = { workspace = true, optional = true }
 miden-package-registry.workspace = true
 midenc-frontend-wasm.workspace = true
 midenc-frontend-wasm-metadata.workspace = true
@@ -46,6 +53,12 @@ midenc-dialect-hir.workspace = true
 midenc-hir.workspace = true
 midenc-hir-transform.workspace = true
 midenc-session.workspace = true
+sha2 = { workspace = true, optional = true }
 toml_edit = { workspace = true, optional = true, features = ["parse", "display"] }
 thiserror.workspace = true
 wat = { workspace = true, optional = true }
+wit-component = { workspace = true, optional = true }
+wit-parser = { workspace = true, optional = true }
+
+[dev-dependencies]
+tempfile.workspace = true
diff --git a/midenc-compile/src/cargo.rs b/midenc-compile/src/cargo.rs
index 0cf4543221..e4f2d06118 100644
--- a/midenc-compile/src/cargo.rs
+++ b/midenc-compile/src/cargo.rs
@@ -1,19 +1,58 @@
-use core::str::FromStr;
+use core::{fmt::Write as _, str::FromStr};
 use std::{
     boxed::Box,
+    env, fs,
     path::{Path, PathBuf},
+    process::{Command, Stdio},
     rc::Rc,
     string::{String, ToString},
     sync::Arc,
+    time::Duration,
     vec::Vec,
 };
 
-use miden_assembly::SourceManager;
+use miden_assembly::{SourceManager, serde::Serializable};
+use miden_mast_package::Package as MastPackage;
+use miden_note_codec_wit::NOTE_CODEC_WIT;
+use midenc_frontend_wasm_metadata::{NESTED_CARGO_SCRUB_ENV, package_cache};
 use midenc_hir::Report;
 use midenc_session::{InputFile, LinkLibrary, Session, miden_project};
+use sha2::{Digest, Sha256};
+use wit_component::DecodedWasm;
+use wit_parser::{
+    Function, FunctionKind, Resolve, Type, TypeDefKind, TypeId, WorldId, WorldItem, WorldKey,
+};
 
 use crate::{CodegenOutput, CompilerResult};
 
+/// Defines the metadata namespace for compiler plugin configuration.
+const NOTE_CODEC_NAMESPACE: &str = "midenc";
+
+/// Names the metadata table that configures the author-side note codec.
+const NOTE_CODEC_TABLE: &str = "note-codec";
+
+/// Defines the dotted metadata table name for the author-side note codec.
+///
+/// The same name is the work directory the codec build creates under the codec crate, so the
+/// build artifacts sit next to the setting that asked for them.
+pub(crate) const NOTE_CODEC_TABLE_NAME: &str = "midenc.note-codec";
+
+/// Names the metadata key that contains the codec crate directory.
+const NOTE_CODEC_CRATE_KEY: &str = "crate";
+
+/// Rust target used to build note codec components; rustc links the cdylib as a
+/// Wasm component, so no separate encoding step is necessary.
+const NOTE_CODEC_TARGET: &str = "wasm32-wasip2";
+
+/// Maximum age of an unused staged note package.
+const NOTE_PACKAGE_CACHE_MAX_AGE: Duration = Duration::from_secs(7 * 24 * 60 * 60);
+
+/// One immutable staged package.
+struct StagedNotePackage {
+    /// Content-addressed directory exposed to codec macro expansion as its package cache.
+    cache_dir: PathBuf,
+}
+
 /// Cargo-specific options extracted from the `Compiler` struct.
 ///
 /// These options are recognized by `cargo miden build` and forwarded to the underlying
@@ -28,6 +67,10 @@ pub struct CargoOptions {
     pub workspace: bool,
     /// Packages to build
     pub packages: Vec<CargoPackageSpec>,
+    /// Require Cargo.lock to remain unchanged.
+    pub locked: bool,
+    /// Prevent Cargo from accessing the network.
+    pub offline: bool,
 }
 
 /// Represents a cargo package specifier.
@@ -99,6 +142,8 @@ impl CargoOptions {
             manifest_path: options.manifest_path.clone(),
             workspace: options.workspace,
             packages,
+            locked: options.cargo_locked,
+            offline: options.cargo_offline,
         })
     }
 }
@@ -215,6 +260,8 @@ pub(crate) fn cargo_build(
         diagnostics: options.diagnostics,
         remap_path_prefixes: options.remap_path_prefixes.clone(),
         rustflags: options.rustflags.clone(),
+        cargo_locked: options.cargo_locked,
+        cargo_offline: options.cargo_offline,
         link_libraries: vec![LinkLibrary::core()],
         ..midenc_session::Options::new(
             Some(package_name.clone()),
@@ -249,24 +296,6 @@ pub(crate) fn cargo_build(
         filesystem_cache_dir,
         context,
     )
-    // We expect dependencies to *always* produce packages (.masp)
-    /*
-    let CodegenOutput {
-        component,
-        account_component_metadata_bytes,
-    } = crate::pipeline::frontends::rust::compile_manifest(&manifest_path, None, context.clone())?
-    else {
-        panic!(
-            "expected cargo build of {package_name} to produce component, but got HIR output \
-             instead",
-        );
-    };
-
-    Ok(CodegenOutput {
-        component,
-        account_component_metadata_bytes,
-    })
-     */
 
     //component.source_inputs(target, context.session())
 
@@ -311,6 +340,597 @@ pub fn write_package_atomic(
     })
 }
 
+/// Returns true when project metadata declares an author-side note codec crate.
+pub(crate) fn has_project_note_codec(metadata: &miden_project::MetadataSet) -> bool {
+    metadata
+        .get(NOTE_CODEC_NAMESPACE)
+        .is_some_and(|namespace| namespace.get(NOTE_CODEC_TABLE).is_some())
+}
+
+/// Builds the optional note codec component declared by a project package.
+pub(crate) fn build_project_note_codec(
+    project_package: &miden_project::Package,
+    project_manifest_path: &Path,
+    note_project_dir: &Path,
+    note_package: &MastPackage,
+) -> CompilerResult<Option<Vec<u8>>> {
+    let Some(codec_crate_dir) =
+        note_codec_crate_dir(project_package.metadata(), project_manifest_path, note_project_dir)?
+    else {
+        return Ok(None);
+    };
+
+    build_note_codec_component(&codec_crate_dir, note_package).map(Some)
+}
+
+/// Reads the optional codec crate path from Miden project metadata.
+fn note_codec_crate_dir(
+    metadata: &miden_project::MetadataSet,
+    project_manifest_path: &Path,
+    project_dir: &Path,
+) -> CompilerResult<Option<PathBuf>> {
+    let Some(namespace) = metadata.get(NOTE_CODEC_NAMESPACE) else {
+        return Ok(None);
+    };
+    let Some(value) = namespace.get(NOTE_CODEC_TABLE) else {
+        return Ok(None);
+    };
+    let table = value.inner().as_table().ok_or_else(|| {
+        Report::msg(format!(
+            "`[package.metadata.{NOTE_CODEC_TABLE_NAME}]` in '{}' must be a table, but it is {}",
+            project_manifest_path.display(),
+            value.inner().type_str()
+        ))
+    })?;
+    for key in table.keys() {
+        if key != NOTE_CODEC_CRATE_KEY {
+            return Err(Report::msg(format!(
+                "`[package.metadata.{NOTE_CODEC_TABLE_NAME}]` in '{}' has unknown key '{key}'; \
+                 the table accepts only '{NOTE_CODEC_CRATE_KEY}'",
+                project_manifest_path.display()
+            )));
+        }
+    }
+    let path = table.get(NOTE_CODEC_CRATE_KEY).ok_or_else(|| {
+        Report::msg(format!(
+            "`[package.metadata.{NOTE_CODEC_TABLE_NAME}]` in '{}' must define a string \
+             `{NOTE_CODEC_CRATE_KEY}`",
+            project_manifest_path.display()
+        ))
+    })?;
+    let path = path.as_str().ok_or_else(|| {
+        Report::msg(format!(
+            "`[package.metadata.{NOTE_CODEC_TABLE_NAME}].{NOTE_CODEC_CRATE_KEY}` in '{}' must be \
+             a string",
+            project_manifest_path.display()
+        ))
+    })?;
+    if path.is_empty() {
+        return Err(Report::msg(format!(
+            "`[package.metadata.{NOTE_CODEC_TABLE_NAME}].{NOTE_CODEC_CRATE_KEY}` in '{}' must not \
+             be empty",
+            project_manifest_path.display()
+        )));
+    }
+
+    let codec_crate_dir = project_dir.join(path);
+    let codec_crate_dir = codec_crate_dir.canonicalize().map_err(|error| {
+        Report::msg(format!(
+            "note codec crate '{}' does not exist; update \
+             `[package.metadata.{NOTE_CODEC_TABLE_NAME}].{NOTE_CODEC_CRATE_KEY}` in '{}': {error}",
+            codec_crate_dir.display(),
+            project_manifest_path.display()
+        ))
+    })?;
+    if !codec_crate_dir.is_dir() {
+        return Err(Report::msg(format!(
+            "note codec crate path '{}' is not a directory; update \
+             `[package.metadata.{NOTE_CODEC_TABLE_NAME}].{NOTE_CODEC_CRATE_KEY}` in '{}'",
+            codec_crate_dir.display(),
+            project_manifest_path.display()
+        )));
+    }
+    Ok(Some(codec_crate_dir))
+}
+
+/// Builds and componentizes one author-side note codec crate.
+///
+/// The codec crate contains the work directory at `<codec crate>/target/midenc.note-codec`. The
+/// build does not use the session target directory. It never shares a build lock with the outer
+/// build. This layout matches the VM event handler plugin. That plugin uses `<guest
+/// crate>/target/midenc.event-handlers`.
+fn build_note_codec_component(
+    codec_crate_dir: &Path,
+    note_package: &MastPackage,
+) -> CompilerResult<Vec<u8>> {
+    // Check the manifest before staging, or a mis-pointed `crate` path creates a work directory
+    // in a directory that is not a crate.
+    let manifest_path = codec_crate_dir.join("Cargo.toml");
+    if !manifest_path.is_file() {
+        return Err(Report::msg(format!(
+            "note codec crate has no manifest at '{}'",
+            manifest_path.display()
+        )));
+    }
+    let work_dir = codec_crate_dir.join("target").join(NOTE_CODEC_TABLE_NAME);
+    let staged_package = stage_note_package(&work_dir, codec_crate_dir, note_package)?;
+
+    let cargo_env = env::var_os("CARGO").map(PathBuf::from);
+    let cargo_path = cargo_env.as_deref().unwrap_or_else(|| Path::new("cargo"));
+    let toolchain = if cargo_env.is_none() {
+        crate::rust::rustup_toolchain()
+    } else {
+        None
+    };
+    crate::rust::install_wasm32_target("wasip2", toolchain.as_deref(), false)?;
+
+    // Give nested Cargo a separate target directory. Sharing the outer lock can deadlock.
+    let cargo_target_dir = work_dir.join("cargo-target");
+    let mut cargo = note_codec_cargo_command(
+        cargo_path,
+        toolchain.as_deref(),
+        codec_crate_dir,
+        &manifest_path,
+        &cargo_target_dir,
+        &staged_package.cache_dir,
+    );
+    cargo.stdout(Stdio::piped()).stderr(Stdio::inherit());
+
+    let manifest_path = manifest_path.canonicalize().map_err(|error| {
+        Report::msg(format!(
+            "failed to resolve note codec manifest '{}': {error}",
+            manifest_path.display()
+        ))
+    })?;
+    let artifacts = crate::rust::run_cargo(cargo, cargo_path)
+        .map_err(|error| note_codec_cargo_error(error, &manifest_path))?;
+    let mut wasm_paths = artifacts
+        .into_iter()
+        .filter(|artifact| {
+            artifact.manifest_path.as_std_path() == manifest_path
+                && artifact.target.crate_types.contains(&cargo_metadata::CrateType::CDyLib)
+        })
+        .flat_map(|artifact| artifact.filenames)
+        .filter(|path| path.extension() == Some("wasm"))
+        .map(|path| path.into_std_path_buf())
+        .collect::<Vec<_>>();
+    wasm_paths.sort();
+    wasm_paths.dedup();
+    if wasm_paths.len() != 1 {
+        return Err(Report::msg(format!(
+            "note codec build for '{}' must produce exactly one `{NOTE_CODEC_TARGET}` cdylib; set \
+             `[lib] crate-type = [\"cdylib\"]` in '{}', found: {wasm_paths:#?}",
+            codec_crate_dir.display(),
+            manifest_path.display()
+        )));
+    }
+    let wasm_path = wasm_paths.pop().expect("one codec artifact was checked above");
+
+    // The wasm32-wasip2 target links through wasm-component-ld, so the produced
+    // cdylib artifact is already a Wasm component.
+    let component = fs::read(&wasm_path).map_err(|error| {
+        Report::msg(format!(
+            "note codec build produced an unreadable component '{}': {error}",
+            wasm_path.display()
+        ))
+    })?;
+    validate_note_codec_component(&component).map_err(|error| {
+        Report::msg(format!(
+            "note codec crate '{}' produced an invalid component: {error}",
+            codec_crate_dir.display()
+        ))
+    })?;
+    gc_staged_note_packages(&staged_package.cache_dir);
+    Ok(component)
+}
+
+/// Builds the nested Cargo command that compiles one note codec crate.
+///
+/// The command pins `RUSTFLAGS`. That environment variable replaces the rustflags in the codec
+/// crate's own cargo config, so the crate cannot enable a Wasm feature that consumers reject.
+/// Replacing them is safe only because the command always passes `--target`: with a target
+/// selected, Cargo applies these flags to the codec crate alone, and host build scripts and
+/// proc macros keep the flags of the host they build for.
+fn note_codec_cargo_command(
+    cargo_path: &Path,
+    toolchain: Option<&str>,
+    codec_crate_dir: &Path,
+    manifest_path: &Path,
+    cargo_target_dir: &Path,
+    package_cache_dir: &Path,
+) -> Command {
+    let mut cargo = Command::new(cargo_path);
+    if let Some(toolchain) = toolchain {
+        cargo.arg(format!("+{toolchain}"));
+    }
+    cargo
+        .current_dir(codec_crate_dir)
+        .arg("build")
+        .arg("--manifest-path")
+        .arg(manifest_path)
+        .arg("--lib")
+        // The codec is a host-side wasmtime artifact; a dev-profile cdylib carries debug
+        // info far past the consumer size limit, so every Miden profile builds it release.
+        .arg("--release")
+        .arg("--target")
+        .arg(NOTE_CODEC_TARGET)
+        .arg("--target-dir")
+        .arg(cargo_target_dir)
+        .arg("--message-format")
+        .arg("json-render-diagnostics")
+        // Let `from_project!` find the staged note package during codec macro expansion.
+        .env(package_cache::PACKAGE_CACHE_ENV, package_cache_dir);
+    for &variable in NESTED_CARGO_SCRUB_ENV {
+        cargo.env_remove(variable);
+    }
+    // Pin the guest rustflags after the scrub. A codec crate cannot enable a Wasm feature
+    // that every consumer rejects, whatever its own cargo config says.
+    cargo.env("RUSTFLAGS", miden_note_schema::NOTE_CODEC_GUEST_RUSTFLAGS);
+    cargo
+}
+
+/// Stages the current package in a content-addressed package-cache directory.
+fn stage_note_package(
+    work_dir: &Path,
+    codec_crate_dir: &Path,
+    note_package: &MastPackage,
+) -> CompilerResult<StagedNotePackage> {
+    let package_bytes = note_package.to_bytes();
+    let mut hasher = Sha256::new();
+    hasher.update(&package_bytes);
+    // Separate the variable-length package bytes from the codec-crate path in the build key.
+    hasher.update([0]);
+    hasher.update(codec_crate_dir.as_os_str().to_string_lossy().as_bytes());
+    let mut build_key = String::with_capacity(64);
+    for byte in hasher.finalize() {
+        write!(&mut build_key, "{byte:02x}").expect("writing to a string cannot fail");
+    }
+    let cache_dir = work_dir.join("package-cache").join(&build_key);
+    let package_path = cache_dir.join(package_cache::package_file_name(&note_package.name));
+
+    if package_path.is_file() {
+        let staged_bytes = fs::read(&package_path).map_err(|error| {
+            Report::msg(format!(
+                "failed to read staged note package '{}': {error}",
+                package_path.display()
+            ))
+        })?;
+        if staged_bytes != package_bytes {
+            return Err(Report::msg(format!(
+                "content-addressed note package path '{}' contains different bytes",
+                package_path.display()
+            )));
+        }
+        // Refresh the package mtime on reuse, or the age-based GC of a concurrent build
+        // could remove an actively used entry that was staged long ago.
+        touch_file(&package_path);
+    } else {
+        write_package_atomic(note_package, &cache_dir).map_err(|error| {
+            Report::msg(format!(
+                "failed to stage note package {}@{} for codec generation: {error}",
+                note_package.name, note_package.version
+            ))
+        })?;
+    }
+
+    Ok(StagedNotePackage { cache_dir })
+}
+
+/// Sets a file's modification time to now; failures are ignored.
+fn touch_file(file: &Path) {
+    if let Ok(handle) = fs::File::options().append(true).open(file) {
+        let _ = handle.set_modified(std::time::SystemTime::now());
+    }
+}
+
+/// Returns the newest modification time of a cache entry and its direct child files.
+fn newest_cache_entry_mtime(path: &Path, metadata: &fs::Metadata) -> Option<std::time::SystemTime> {
+    let mut newest = metadata.modified().ok();
+    if !metadata.is_dir() {
+        return newest;
+    }
+    let Ok(entries) = fs::read_dir(path) else {
+        return newest;
+    };
+    for entry in entries.flatten() {
+        let Ok(metadata) = entry.metadata() else {
+            continue;
+        };
+        if !metadata.is_file() {
+            continue;
+        }
+        let Ok(modified) = metadata.modified() else {
+            continue;
+        };
+        if newest.is_none_or(|current| modified > current) {
+            newest = Some(modified);
+        }
+    }
+    newest
+}
+
+/// Removes staged note packages that have not been used for more than seven days.
+fn gc_staged_note_packages(current_cache_dir: &Path) {
+    let Some(cache_parent) = current_cache_dir.parent() else {
+        return;
+    };
+    let Ok(entries) = fs::read_dir(cache_parent) else {
+        return;
+    };
+
+    for entry in entries.flatten() {
+        let path = entry.path();
+        if path == current_cache_dir {
+            continue;
+        }
+        let Ok(metadata) = entry.metadata() else {
+            continue;
+        };
+        let Some(modified) = newest_cache_entry_mtime(&path, &metadata) else {
+            continue;
+        };
+        let Ok(age) = modified.elapsed() else {
+            continue;
+        };
+        if age > NOTE_PACKAGE_CACHE_MAX_AGE {
+            if metadata.is_dir() {
+                let _ = fs::remove_dir_all(path);
+            } else {
+                // A stray file under the cache parent is not a staged package; collect it too.
+                let _ = fs::remove_file(path);
+            }
+        }
+    }
+}
+
+/// Returns the outer Cargo resolution policy arguments for a nested command.
+pub(crate) fn apply_cargo_policy(
+    locked: bool,
+    offline: bool,
+) -> impl Iterator<Item = &'static str> {
+    [locked.then_some("--locked"), offline.then_some("--offline")]
+        .into_iter()
+        .flatten()
+}
+
+/// Attributes a nested Cargo failure to the codec manifest.
+fn note_codec_cargo_error(error: Report, manifest_path: &Path) -> Report {
+    Report::msg(format!(
+        "the nested note codec build for '{}' failed: {error}",
+        manifest_path.display()
+    ))
+}
+
+/// Verifies the component sandbox and the versioned codec interface export.
+fn validate_note_codec_component(component: &[u8]) -> CompilerResult<()> {
+    // The byte cap, the Wasm feature set, and the structural caps are fixed policy, so the
+    // producer applies the consumer rules here through the one shared entry point: a package
+    // that builds is a package that consumers accept.
+    miden_note_schema::validate_note_codec_component(
+        component,
+        miden_note_schema::MAX_NOTE_CODEC_COMPONENT_BYTES,
+    )
+    .map_err(|error| {
+        Report::msg(format!(
+            "note codec component fails the structural limits consumers enforce: {error}"
+        ))
+    })?;
+    let DecodedWasm::Component(resolve, world_id) =
+        wit_component::decode(component).map_err(|error| {
+            Report::msg(format!("failed to decode the encoded note codec component: {error}"))
+        })?
+    else {
+        return Err(Report::msg("note codec output is not a component"));
+    };
+
+    let mut expected = Resolve::default();
+    let package_id = expected.push_str("note-codec.wit", NOTE_CODEC_WIT).map_err(|error| {
+        Report::msg(format!("failed to resolve the pinned note codec WIT: {error:#}"))
+    })?;
+    let expected_package = &expected.packages[package_id];
+    if expected_package.worlds.len() != 1 {
+        return Err(Report::msg(format!(
+            "pinned note codec WIT must define exactly one world, found: {:#?}",
+            expected_package.worlds
+        )));
+    }
+    let expected_world_id = *expected_package
+        .worlds
+        .values()
+        .next()
+        .expect("one pinned codec world was checked above");
+    let (expected_identity, expected_interface_id) =
+        codec_world_export(&expected, expected_world_id)?;
+
+    let world = &resolve.worlds[world_id];
+    // The wasm32-wasip2 standard library wires WASI interfaces into every component.
+    // Consumers stub them as trapping imports, so only `wasi:*` imports are permitted.
+    for (key, _) in world.imports.iter() {
+        let name = resolve.name_world_key(key);
+        if !name.starts_with("wasi:") {
+            return Err(Report::msg(format!(
+                "note codec component may import only `wasi:*` interfaces, found `{name}`"
+            )));
+        }
+    }
+    if world.exports.len() != 1 {
+        return Err(Report::msg(format!(
+            "note codec component must export only `{expected_identity}`, found: {:#?}",
+            world.exports,
+        )));
+    }
+
+    let (actual_identity, actual_interface_id) = codec_world_export(&resolve, world_id)?;
+    if actual_identity != expected_identity {
+        return Err(Report::msg(format!(
+            "note codec world exports `{actual_identity}`, expected `{expected_identity}`"
+        )));
+    }
+    compare_codec_interface_signatures(
+        &resolve,
+        actual_interface_id,
+        &expected,
+        expected_interface_id,
+        &expected_identity,
+    )
+}
+
+/// Returns the package-qualified identity and interface ID of the first codec world export.
+fn codec_world_export(
+    resolve: &Resolve,
+    world_id: WorldId,
+) -> CompilerResult<(String, wit_parser::InterfaceId)> {
+    let world = &resolve.worlds[world_id];
+    let (key, item) = world
+        .exports
+        .iter()
+        .next()
+        .ok_or_else(|| Report::msg("note codec world does not export an interface"))?;
+    let WorldItem::Interface { id, .. } = item else {
+        return Err(Report::msg(format!(
+            "note codec world export `{}` is not an interface",
+            resolve.name_world_key(key)
+        )));
+    };
+    let interface = &resolve.interfaces[*id];
+    let interface_name = interface
+        .name
+        .as_deref()
+        .ok_or_else(|| Report::msg("note codec world exports an unnamed interface"))?;
+    let package_id = interface.package.ok_or_else(|| {
+        Report::msg("note codec world exports an interface without a package identity")
+    })?;
+    let package = &resolve.packages[package_id].name;
+    let interface_identity = package.interface_id(interface_name);
+    if !matches!(key, WorldKey::Interface(export_id) if export_id == id) {
+        return Err(Report::msg(format!(
+            "note codec world export `{}` must use the package-qualified interface identity \
+             `{interface_identity}`",
+            resolve.name_world_key(key),
+        )));
+    }
+    Ok((interface_identity, *id))
+}
+
+/// Compares all exported codec function names and structural signatures.
+fn compare_codec_interface_signatures(
+    actual_resolve: &Resolve,
+    actual_id: wit_parser::InterfaceId,
+    expected_resolve: &Resolve,
+    expected_id: wit_parser::InterfaceId,
+    expected_identity: &str,
+) -> CompilerResult<()> {
+    let actual = &actual_resolve.interfaces[actual_id];
+    let expected = &expected_resolve.interfaces[expected_id];
+    if actual.functions.len() != expected.functions.len() {
+        return Err(Report::msg(format!(
+            "`{expected_identity}` exports {} functions, expected {}",
+            actual.functions.len(),
+            expected.functions.len()
+        )));
+    }
+    for (name, expected_function) in &expected.functions {
+        let actual_function = actual
+            .functions
+            .get(name)
+            .ok_or_else(|| Report::msg(format!("`{expected_identity}` is missing `{name}`")))?;
+        let actual_signature = function_signature(actual_resolve, actual_function)?;
+        let expected_signature = function_signature(expected_resolve, expected_function)?;
+        if actual_signature != expected_signature {
+            return Err(Report::msg(format!(
+                "`{expected_identity}.{name}` has signature `{actual_signature}`, expected \
+                 `{expected_signature}`"
+            )));
+        }
+    }
+    Ok(())
+}
+
+/// Returns a structural function signature with aliases resolved.
+fn function_signature(resolve: &Resolve, function: &Function) -> CompilerResult<String> {
+    if function.kind != FunctionKind::Freestanding {
+        return Err(Report::msg(format!(
+            "note codec function `{}` must be freestanding",
+            function.name
+        )));
+    }
+    let params = function
+        .params
+        .iter()
+        .map(|param| {
+            canonical_wit_type(resolve, param.ty, &mut Vec::new())
+                .map(|ty| format!("{}: {ty}", param.name))
+        })
+        .collect::<CompilerResult<Vec<_>>>()?
+        .join(", ");
+    let result = function
+        .result
+        .map(|ty| canonical_wit_type(resolve, ty, &mut Vec::new()))
+        .transpose()?
+        .unwrap_or_else(|| "_".to_string());
+    Ok(format!("func({params}) -> {result}"))
+}
+
+/// Returns a structural WIT type signature with aliases resolved.
+fn canonical_wit_type(
+    resolve: &Resolve,
+    ty: Type,
+    active: &mut Vec<TypeId>,
+) -> CompilerResult<String> {
+    let primitive = match ty {
+        Type::Bool => Some("bool"),
+        Type::U8 => Some("u8"),
+        Type::U16 => Some("u16"),
+        Type::U32 => Some("u32"),
+        Type::U64 => Some("u64"),
+        Type::S8 => Some("s8"),
+        Type::S16 => Some("s16"),
+        Type::S32 => Some("s32"),
+        Type::S64 => Some("s64"),
+        Type::F32 => Some("f32"),
+        Type::F64 => Some("f64"),
+        Type::Char => Some("char"),
+        Type::String => Some("string"),
+        Type::ErrorContext => Some("error-context"),
+        Type::Id(_) => None,
+    };
+    if let Some(primitive) = primitive {
+        return Ok(primitive.to_string());
+    }
+    let Type::Id(id) = ty else {
+        unreachable!("all primitive WIT types returned above")
+    };
+    if active.contains(&id) {
+        return Err(Report::msg("recursive types are not valid in the note codec interface"));
+    }
+    active.push(id);
+    let result = match &resolve.types[id].kind {
+        TypeDefKind::Type(ty) => canonical_wit_type(resolve, *ty, active),
+        TypeDefKind::List(ty) => {
+            canonical_wit_type(resolve, *ty, active).map(|ty| format!("list<{ty}>"))
+        }
+        TypeDefKind::Result(result) => {
+            let ok = result
+                .ok
+                .map(|ty| canonical_wit_type(resolve, ty, active))
+                .transpose()?
+                .unwrap_or_else(|| "_".to_string());
+            let err = result
+                .err
+                .map(|ty| canonical_wit_type(resolve, ty, active))
+                .transpose()?
+                .unwrap_or_else(|| "_".to_string());
+            Ok(format!("result<{ok}, {err}>"))
+        }
+        kind => Err(Report::msg(format!(
+            "unsupported `{}` type in the note codec interface signature",
+            kind.as_str()
+        ))),
+    };
+    active.pop();
+    result
+}
+
 /// Parse `cargo -Zscript`-style frontmatter from a given input string, if present.
 ///
 /// Returns `Ok(None)` if the input does not define Cargo frontmatter.
@@ -390,3 +1010,315 @@ pub fn parse_cargo_frontmatter(
 
     Ok(Some(dependencies))
 }
+
+#[cfg(test)]
+mod tests {
+    use std::ffi::OsStr;
+
+    use miden_assembly_syntax::debuginfo::Span;
+
+    use super::*;
+
+    /// Builds metadata with one value in the note codec namespace.
+    fn note_codec_metadata(value: miden_project::Value) -> miden_project::MetadataSet {
+        let mut namespace = miden_project::Metadata::default();
+        namespace.insert(Span::unknown(Arc::<str>::from(NOTE_CODEC_TABLE)), Span::unknown(value));
+        let mut metadata = miden_project::MetadataSet::default();
+        metadata.insert(Span::unknown(Arc::<str>::from(NOTE_CODEC_NAMESPACE)), namespace);
+        metadata
+    }
+
+    /// Builds a note codec metadata table from the given entries.
+    fn note_codec_table(
+        entries: impl IntoIterator<Item = (&'static str, miden_project::Value)>,
+    ) -> miden_project::Value {
+        miden_project::Value::Table(
+            entries.into_iter().map(|(key, value)| (key.to_string(), value)).collect(),
+        )
+    }
+
+    #[test]
+    fn note_codec_crate_resolves_from_namespaced_metadata() {
+        let root = tempfile::TempDir::new().unwrap();
+        let codec_crate = root.path().join("codec");
+        fs::create_dir(&codec_crate).unwrap();
+        let metadata = note_codec_metadata(note_codec_table([(
+            NOTE_CODEC_CRATE_KEY,
+            miden_project::Value::String("codec".to_string()),
+        )]));
+
+        let resolved =
+            note_codec_crate_dir(&metadata, &root.path().join("miden-project.toml"), root.path())
+                .unwrap();
+
+        assert_eq!(resolved, Some(codec_crate.canonicalize().unwrap()));
+    }
+
+    #[test]
+    fn note_codec_metadata_requires_crate_key() {
+        let root = tempfile::TempDir::new().unwrap();
+        let manifest_path = root.path().join("miden-project.toml");
+        let metadata = note_codec_metadata(note_codec_table([]));
+
+        let error = note_codec_crate_dir(&metadata, &manifest_path, root.path())
+            .unwrap_err()
+            .to_string();
+
+        assert!(error.contains(&manifest_path.display().to_string()));
+        assert!(error.contains("must define a string `crate`"));
+    }
+
+    #[test]
+    fn note_codec_metadata_rejects_unknown_key() {
+        let root = tempfile::TempDir::new().unwrap();
+        let manifest_path = root.path().join("miden-project.toml");
+        let metadata = note_codec_metadata(note_codec_table([
+            (NOTE_CODEC_CRATE_KEY, miden_project::Value::String("codec".to_string())),
+            ("module", miden_project::Value::String("codec.wasm".to_string())),
+        ]));
+
+        let error = note_codec_crate_dir(&metadata, &manifest_path, root.path())
+            .unwrap_err()
+            .to_string();
+
+        assert!(error.contains(&manifest_path.display().to_string()));
+        assert!(error.contains("unknown key 'module'"));
+    }
+
+    #[test]
+    fn note_codec_metadata_value_must_be_a_table() {
+        let root = tempfile::TempDir::new().unwrap();
+        let manifest_path = root.path().join("miden-project.toml");
+        let metadata = note_codec_metadata(miden_project::Value::String("codec".to_string()));
+
+        let error = note_codec_crate_dir(&metadata, &manifest_path, root.path())
+            .unwrap_err()
+            .to_string();
+
+        assert!(error.contains(&manifest_path.display().to_string()));
+        assert!(error.contains("must be a table"));
+    }
+
+    #[test]
+    fn note_codec_metadata_without_namespace_is_absent() {
+        let root = tempfile::TempDir::new().unwrap();
+
+        let resolved = note_codec_crate_dir(
+            &miden_project::MetadataSet::default(),
+            &root.path().join("miden-project.toml"),
+            root.path(),
+        )
+        .unwrap();
+
+        assert_eq!(resolved, None);
+    }
+
+    #[test]
+    fn codec_interface_validation_compares_function_signatures() {
+        let (expected_resolve, expected_id) = resolve_codec_interface(NOTE_CODEC_WIT);
+        let expected_identity = codec_interface_identity(&expected_resolve, expected_id);
+        compare_codec_interface_signatures(
+            &expected_resolve,
+            expected_id,
+            &expected_resolve,
+            expected_id,
+            &expected_identity,
+        )
+        .unwrap();
+
+        let changed = NOTE_CODEC_WIT.replace(
+            "parse: func(type-fqn: string, value: string)",
+            "parse: func(type-fqn: string, value: u64)",
+        );
+        let (actual_resolve, actual_id) = resolve_codec_interface(&changed);
+        let error = compare_codec_interface_signatures(
+            &actual_resolve,
+            actual_id,
+            &expected_resolve,
+            expected_id,
+            &expected_identity,
+        )
+        .unwrap_err()
+        .to_string();
+
+        assert!(error.contains(".parse` has signature"));
+        assert!(error.contains("value: u64"));
+        assert!(error.contains("value: string"));
+    }
+
+    #[test]
+    fn staged_package_reuse_refreshes_the_entry_age() {
+        let root = tempfile::TempDir::new().unwrap();
+        let package = midenc_codegen_masm::intrinsics::load();
+        let codec_crate = root.path().join("codec");
+        fs::create_dir(&codec_crate).unwrap();
+
+        let staged = stage_note_package(root.path(), &codec_crate, &package).unwrap();
+        let package_path = staged.cache_dir.join(package_cache::package_file_name(&package.name));
+        let old = std::time::SystemTime::now() - (NOTE_PACKAGE_CACHE_MAX_AGE * 2);
+        fs::File::options()
+            .write(true)
+            .open(&package_path)
+            .unwrap()
+            .set_modified(old)
+            .unwrap();
+
+        // A cache hit must refresh the package mtime used by the GC freshness rule.
+        let reused = stage_note_package(root.path(), &codec_crate, &package).unwrap();
+        assert_eq!(reused.cache_dir, staged.cache_dir);
+        let package_age =
+            fs::metadata(&package_path).unwrap().modified().unwrap().elapsed().unwrap();
+        assert!(
+            package_age < NOTE_PACKAGE_CACHE_MAX_AGE,
+            "the package age was not refreshed: {package_age:?}"
+        );
+        let metadata = fs::metadata(&staged.cache_dir).unwrap();
+        let age = newest_cache_entry_mtime(&staged.cache_dir, &metadata)
+            .unwrap()
+            .elapsed()
+            .unwrap();
+        assert!(age < NOTE_PACKAGE_CACHE_MAX_AGE, "the entry age was not refreshed: {age:?}");
+    }
+
+    #[test]
+    fn note_codec_cargo_errors_are_always_attributed() {
+        let error =
+            note_codec_cargo_error(Report::msg("rustc failed"), Path::new("/codec/Cargo.toml"))
+                .to_string();
+
+        assert_eq!(
+            error,
+            "the nested note codec build for '/codec/Cargo.toml' failed: rustc failed"
+        );
+    }
+
+    #[test]
+    fn note_codec_staging_is_content_addressed() {
+        let root = tempfile::TempDir::new().unwrap();
+        let package = midenc_codegen_masm::intrinsics::load();
+        let codec_crate = root.path().join("codec");
+        fs::create_dir(&codec_crate).unwrap();
+
+        let first = stage_note_package(root.path(), &codec_crate, &package).unwrap();
+        let second = stage_note_package(root.path(), &codec_crate, &package).unwrap();
+        assert_eq!(first.cache_dir, second.cache_dir);
+        assert_eq!(first.cache_dir.parent(), Some(root.path().join("package-cache").as_path()));
+        assert_eq!(first.cache_dir.file_name().unwrap().len(), 64);
+        let package_path = first.cache_dir.join(package_cache::package_file_name(&package.name));
+        assert_eq!(fs::read(package_path).unwrap(), package.to_bytes());
+
+        let mut dotted_package = (*package).clone();
+        dotted_package.name = miden_mast_package::PackageId::from("miden.note.with.dots");
+        let dotted = stage_note_package(root.path(), &codec_crate, &dotted_package).unwrap();
+        let dotted_path =
+            dotted.cache_dir.join(package_cache::package_file_name(&dotted_package.name));
+        assert_eq!(dotted_path.file_name().unwrap(), "miden.note.with.dots.masp");
+        assert_eq!(fs::read(&dotted_path).unwrap(), dotted_package.to_bytes());
+        fs::write(&dotted_path, b"different package bytes").unwrap();
+        let error = stage_note_package(root.path(), &codec_crate, &dotted_package)
+            .err()
+            .expect("the probe must reject different bytes at the writer path")
+            .to_string();
+        assert!(error.contains("contains different bytes"), "unexpected error: {error}");
+    }
+
+    #[test]
+    fn oversized_codec_components_fail_producer_validation() {
+        let oversized = vec![0u8; miden_note_schema::MAX_NOTE_CODEC_COMPONENT_BYTES + 1];
+        let error = validate_note_codec_component(&oversized).unwrap_err().to_string();
+        assert!(
+            error.contains("fails the structural limits consumers enforce"),
+            "unexpected error: {error}"
+        );
+        assert!(error.contains("pre-compilation limit"), "unexpected error: {error}");
+        assert!(
+            error.contains(&miden_note_schema::MAX_NOTE_CODEC_COMPONENT_BYTES.to_string()),
+            "the limit is not named: {error}"
+        );
+    }
+
+    #[test]
+    fn codec_components_outside_the_wasm_feature_policy_fail_producer_validation() {
+        let component = wat::parse_str(
+            r#"(component
+                (core module
+                    (func (export "simd")
+                        v128.const i32x4 0 0 0 0
+                        drop)))"#,
+        )
+        .unwrap();
+
+        let error = validate_note_codec_component(&component).unwrap_err().to_string();
+
+        assert!(
+            error.contains("uses a Wasm feature the policy rejects"),
+            "unexpected error: {error}"
+        );
+        assert!(error.contains("SIMD"), "the rejected proposal is not named: {error}");
+    }
+
+    #[test]
+    fn structurally_oversized_codec_components_fail_producer_validation() {
+        let globals = "(global i32 (i32.const 0))".repeat(1_001);
+        let component = wat::parse_str(format!("(component (core module {globals}))")).unwrap();
+
+        let error = validate_note_codec_component(&component).unwrap_err().to_string();
+
+        assert!(
+            error.contains("fails the structural limits consumers enforce"),
+            "unexpected error: {error}"
+        );
+        assert!(error.contains("1001 globals"), "the observed count is not named: {error}");
+    }
+
+    #[test]
+    fn note_codec_cargo_command_pins_the_guest_build_flags() {
+        let command = note_codec_cargo_command(
+            Path::new("cargo"),
+            None,
+            Path::new("/codec"),
+            Path::new("/codec/Cargo.toml"),
+            Path::new("/codec/target/cargo-target"),
+            Path::new("/codec/target/package-cache"),
+        );
+
+        let environment = command.get_envs().collect::<Vec<_>>();
+        assert!(
+            environment.contains(&(
+                OsStr::new("RUSTFLAGS"),
+                Some(OsStr::new(miden_note_schema::NOTE_CODEC_GUEST_RUSTFLAGS)),
+            )),
+            "the guest rustflags are not pinned: {environment:?}"
+        );
+        assert!(
+            environment.contains(&(OsStr::new("CARGO_ENCODED_RUSTFLAGS"), None)),
+            "the outer rustflags are not scrubbed: {environment:?}"
+        );
+
+        let args = command.get_args().collect::<Vec<_>>();
+        let target = args
+            .windows(2)
+            .find(|window| window[0] == OsStr::new("--target"))
+            .expect("the nested build does not select a target");
+        assert_eq!(target[1], OsStr::new(NOTE_CODEC_TARGET));
+    }
+
+    /// Resolves the codec interface from one complete WIT document.
+    fn resolve_codec_interface(wit: &str) -> (Resolve, wit_parser::InterfaceId) {
+        let mut resolve = Resolve::default();
+        let package_id = resolve.push_str("note-codec-test.wit", wit).unwrap();
+        let world_id = resolve.packages[package_id].worlds["note-codec"];
+        let (_, interface_id) = codec_world_export(&resolve, world_id).unwrap();
+        (resolve, interface_id)
+    }
+
+    /// Returns the package-qualified identity of one resolved codec interface.
+    fn codec_interface_identity(
+        resolve: &Resolve,
+        interface_id: wit_parser::InterfaceId,
+    ) -> String {
+        let interface = &resolve.interfaces[interface_id];
+        let package = &resolve.packages[interface.package.unwrap()].name;
+        package.interface_id(interface.name.as_deref().unwrap())
+    }
+}
diff --git a/midenc-compile/src/compiler.rs b/midenc-compile/src/compiler.rs
index b1d52e2b34..b7ba5bdc89 100644
--- a/midenc-compile/src/compiler.rs
+++ b/midenc-compile/src/compiler.rs
@@ -1,6 +1,8 @@
 #[cfg(feature = "std")]
+use alloc::sync::Arc;
+#[cfg(feature = "std")]
 use alloc::{borrow::ToOwned, format, string::ToString, vec};
-use alloc::{boxed::Box, string::String, sync::Arc, vec::Vec};
+use alloc::{boxed::Box, string::String, vec::Vec};
 #[cfg(feature = "std")]
 use std::ffi::OsString;
 
@@ -8,10 +10,11 @@ use std::ffi::OsString;
 use clap::{Parser, builder::ArgPredicate};
 use miden_mast_package::TargetType;
 use midenc_session::{
-    ColorChoice, DebugInfo, InputFile, IrFilter, LinkLibrary, OptLevel, Options, OutputFile,
-    OutputTypeSpec, OutputTypes, PathBuf, RemapPathPrefix, Session, Verbosity, Warnings,
-    add_target_link_libraries, diagnostics::Emitter,
+    ColorChoice, DebugInfo, IrFilter, LinkLibrary, OptLevel, Options, OutputFile, OutputTypeSpec,
+    OutputTypes, PathBuf, RemapPathPrefix, Verbosity, Warnings, add_target_link_libraries,
 };
+#[cfg(feature = "std")]
+use midenc_session::{InputFile, Session, diagnostics::Emitter};
 
 /// Compile a program from WebAssembly or Miden IR, to Miden Assembly.
 #[derive(Debug, Clone)]
@@ -383,6 +386,12 @@ pub struct Compiler {
         arg(long, short = 'p', value_name = "SPEC", conflicts_with("workspace"),)
     )]
     pub package: Vec<String>,
+    /// Require Cargo.lock to remain unchanged in Cargo builds.
+    #[cfg_attr(feature = "std", arg(long, help_heading = "Compiler"))]
+    pub locked: bool,
+    /// Prevent Cargo builds from accessing the network.
+    #[cfg_attr(feature = "std", arg(long, help_heading = "Compiler"))]
+    pub offline: bool,
     /// Path to the package/project manifest
     ///
     /// If unspecified, the compiler will create a virtual manifest for the given input file, if
@@ -710,6 +719,8 @@ impl Compiler {
             release: _,
             workspace,
             package,
+            locked,
+            offline,
             manifest_path,
             remap_path_prefixes,
         } = self;
@@ -777,6 +788,8 @@ impl Compiler {
         options.entrypoint = entrypoint;
         options.workspace = workspace;
         options.packages = package;
+        options.cargo_locked = locked;
+        options.cargo_offline = offline;
         options.stop_after = stop_after;
         options.parse_only = parse_only;
         options.analyze_only = analyze_only;
@@ -806,6 +819,7 @@ impl Compiler {
     }
 
     /// Use this configuration to obtain a [Session] used for compilation
+    #[cfg(feature = "std")]
     fn into_session(
         options: Box<Options>,
         input: Option<InputFile>,
@@ -847,9 +861,11 @@ fn format_error<I: clap::CommandFactory>(err: clap::Error) -> clap::Error {
     err.format(&mut cmd)
 }
 
+#[cfg(feature = "std")]
 #[derive(Clone)]
 struct TargetTypeValueParser;
 
+#[cfg(feature = "std")]
 impl clap::builder::TypedValueParser for TargetTypeValueParser {
     type Value = TargetType;
 
@@ -909,4 +925,12 @@ mod tests {
     fn no_stop_after_means_no_cap() {
         assert_eq!(options(&[]).stop_after, None);
     }
+
+    /// Cargo resolution policy flags reach the Rust project build through the session options.
+    #[test]
+    fn cargo_resolution_policy_reaches_the_options() {
+        let options = options(&["--locked", "--offline"]);
+        assert!(options.cargo_locked);
+        assert!(options.cargo_offline);
+    }
 }
diff --git a/midenc-compile/src/lib.rs b/midenc-compile/src/lib.rs
index ce851985a2..1338a3826f 100644
--- a/midenc-compile/src/lib.rs
+++ b/midenc-compile/src/lib.rs
@@ -14,21 +14,21 @@ pub mod pipeline;
 #[cfg(feature = "std")]
 pub mod rust;
 
+#[cfg(feature = "std")]
 use alloc::rc::Rc;
 
 pub use midenc_hir::Context;
+#[cfg(feature = "std")]
 use midenc_hir::Op;
+use midenc_session::diagnostics::{Diagnostic, Report, miette};
 #[cfg(feature = "std")]
 use midenc_session::{OutputFile, OutputType};
-use midenc_session::{
-    OutputMode,
-    diagnostics::{Diagnostic, Report, WrapErr, miette},
-};
+#[cfg(feature = "std")]
+use midenc_session::{OutputMode, diagnostics::WrapErr};
 
-pub use self::{
-    compiler::Compiler,
-    pipeline::artifacts::{CodegenOutput, CompiledArtifact, MidenComponent},
-};
+pub use self::compiler::Compiler;
+#[cfg(feature = "std")]
+pub use self::pipeline::artifacts::{CodegenOutput, CompiledArtifact, MidenComponent};
 
 pub type CompilerResult<T> = Result<T, Report>;
 
@@ -39,6 +39,7 @@ pub type CompilerResult<T> = Result<T, Report>;
 pub struct CompilerStopped(&'static str);
 
 /// Run the compiler using the provided [midenc_session::Session]
+#[cfg(feature = "std")]
 pub fn compile(context: Rc<Context>) -> CompilerResult<()> {
     use midenc_hir::formatter::DisplayHex;
 
@@ -87,6 +88,7 @@ pub fn compile(context: Rc<Context>) -> CompilerResult<()> {
 }
 
 /// Same as `compile`, but return compiled artifacts to the caller
+#[cfg(feature = "std")]
 pub fn compile_to_memory(context: Rc<Context>) -> CompilerResult<CompiledArtifact> {
     let session = context.session_rc();
     let input = session.input.clone().ok_or_else(|| Report::msg("no inputs"))?;
@@ -121,6 +123,7 @@ pub fn compile_to_memory(context: Rc<Context>) -> CompilerResult<CompiledArtifac
 /// allocated in. The context is recovered from the component here and held for the duration of
 /// the request, so a caller need only keep its own handle alive *up to* this call — but it must
 /// do that much. See [`pipeline::Start::At`].
+#[cfg(feature = "std")]
 pub fn compile_link_output_to_masm_with_pre_assembly_stage<F>(
     link_output: MidenComponent,
     pre_assembly_stage: F,
@@ -167,6 +170,7 @@ where
 /// emitted is nonetheless decided by the session: `Pipeline::compile` attaches an observer that
 /// renders the selected target's artifacts through the route's own declarations, and
 /// `Session::emit` writes only the output types the session asked for.
+#[cfg(feature = "std")]
 fn run_pipeline(
     session: Rc<midenc_session::Session>,
     input: midenc_session::InputFile,
@@ -197,6 +201,7 @@ fn run_pipeline(
 ///
 /// `CompiledArtifact::Lowered` is therefore unreachable from here. It survives because it is
 /// part of a public enum with an external consumer, and narrowing that is a separate change.
+#[cfg(feature = "std")]
 fn artifact_from_outcome(
     outcome: pipeline::Outcome,
     stop: Option<pipeline::StopFlag>,
@@ -219,6 +224,7 @@ fn artifact_from_outcome(
     Ok(CompiledArtifact::Assembled(package))
 }
 
+#[cfg(feature = "std")]
 pub(crate) fn emit_hir_if_requested(
     op: &midenc_hir::Operation,
     context: Rc<Context>,
diff --git a/midenc-compile/src/pipeline/assembly.rs b/midenc-compile/src/pipeline/assembly.rs
index 2771df6c6d..544ee6a510 100644
--- a/midenc-compile/src/pipeline/assembly.rs
+++ b/midenc-compile/src/pipeline/assembly.rs
@@ -2,7 +2,8 @@
 //!
 //! [`prepare_assembler`] runs before assembly, applying the session's link inputs;
 //! [`post_process_package`] runs after it, attaching to the assembled package the sections
-//! and advice-map entries that codegen produced but the assembler knows nothing about.
+//! and advice-map entries that codegen produced but the assembler knows nothing about. For note
+//! targets, it also builds, validates, and attaches an author codec declared by project metadata.
 //!
 //! Both are shared: the [`Pipeline`](super::Pipeline) driver prepares its own assembler
 //! through the first, and every frontend that lowers HIR post-processes through the second —
@@ -16,10 +17,13 @@
 
 use alloc::vec::Vec;
 
+use miden_assembly::TargetAssemblyContext;
 use miden_mast_package::Package;
 use midenc_codegen_masm::{MasmComponent, intrinsics};
 use midenc_session::{Session, diagnostics::Report};
 
+use crate::cargo::NOTE_CODEC_TABLE_NAME;
+
 /// Apply the session's link inputs to `assembler` before a project is assembled with it.
 pub(crate) fn prepare_assembler(
     assembler: &mut miden_assembly::Assembler,
@@ -59,23 +63,37 @@ pub(crate) fn prepare_assembler(
     Ok(())
 }
 
+/// Attaches frontend metadata, advice-map data, and target-specific sections after assembly.
+///
+/// The author codec is attached only when the note is the root target of the build, as
+/// [`attaches_note_codec`] decides. Every other section is attached for every role.
 pub(crate) fn post_process_package(
     package: &mut Package,
     component: &MasmComponent,
     sections: &midenc_frontend_wasm_metadata::PackageSections,
-    target: &midenc_session::miden_project::Target,
-    registry: &dyn miden_package_registry::PackageRegistryAndProvider,
+    context: &TargetAssemblyContext<'_>,
+    role: crate::pipeline::observer::TargetRole,
 ) -> Result<(), Report> {
     use miden_assembly::serde::Serializable;
     use miden_mast_package::{Section, SectionId};
     use midenc_session::miden_project::TargetType;
 
-    attach_account_component_metadata(package, sections.account_component_metadata.as_deref());
-    attach_component_wit(package, sections.component_wit.as_deref());
+    let has_note_codec = crate::cargo::has_project_note_codec(context.package.metadata());
+    validate_note_codec_declaration(
+        has_note_codec,
+        package_has_note_target(&context.package),
+        context.target.ty,
+        sections.note_storage_schema.is_some(),
+        context.target.name.inner(),
+    )?;
+
+    attach_account_component_metadata(package, sections.account_component_metadata.as_deref())?;
+    attach_component_wit(package, sections.component_wit.as_deref())?;
+    attach_note_storage_schema(package, sections.note_storage_schema.as_deref())?;
     extend_rodata_advice_map(package, &component.rodata);
 
     // Embed the kernel in note/transaction script packages, if not already embedded
-    if matches!(target.ty, TargetType::Note | TargetType::TransactionScript)
+    if matches!(context.target.ty, TargetType::Note | TargetType::TransactionScript)
         && !package.sections.iter().any(|section| section.id == SectionId::KERNEL)
         && let Ok(Some(kernel_dep)) = package.kernel_runtime_dependency()
     {
@@ -83,12 +101,138 @@ pub(crate) fn post_process_package(
             kernel_dep.version().clone(),
             kernel_dep.digest,
         );
-        let kernel_package = registry.load_package(kernel_dep.id(), &version)?;
+        let kernel_package = context.package_registry.load_package(kernel_dep.id(), &version)?;
         package
             .sections
             .push(Section::new(SectionId::KERNEL, kernel_package.to_bytes()));
     }
 
+    if attaches_note_codec(has_note_codec, context.target.ty, role) {
+        // Run after schema and kernel attachment. The codec stages this package state and hashes it.
+        attach_note_codec(package, context)?;
+    }
+
+    Ok(())
+}
+
+/// Returns true when the assembled package must carry an author codec section.
+///
+/// The codec is built only for a note that is the root target of the build. A note that is a
+/// source dependency of another project gets no codec section, for two reasons. The codec
+/// crate's inputs are outside the build provenance, so a dependency copy that is kept in a
+/// package store can carry a stale codec after the codec crate changes. And every dependency
+/// assembly would otherwise run a nested cargo build. A consumer that needs the codec loads the
+/// note's own package. This is also the behavior of the package post-processor that will take
+/// over the codec build, because a post-processor never runs on a dependency.
+fn attaches_note_codec(
+    has_note_codec: bool,
+    target_type: midenc_session::miden_project::TargetType,
+    role: crate::pipeline::observer::TargetRole,
+) -> bool {
+    use midenc_session::miden_project::TargetType;
+
+    has_note_codec && target_type == TargetType::Note && role.is_root()
+}
+
+/// Validates the target and schema required by an author codec declaration.
+fn validate_note_codec_declaration(
+    has_note_codec: bool,
+    package_has_note_target: bool,
+    target_type: midenc_session::miden_project::TargetType,
+    has_note_storage_schema: bool,
+    target_name: &str,
+) -> Result<(), Report> {
+    use midenc_session::miden_project::TargetType;
+
+    if has_note_codec && !package_has_note_target {
+        return Err(Report::msg(format!(
+            "`[package.metadata.{NOTE_CODEC_TABLE_NAME}]` requires a note target, but the package \
+             that contains target '{target_name}' defines no note target"
+        )));
+    }
+    if has_note_codec && target_type == TargetType::Note && !has_note_storage_schema {
+        return Err(Report::msg(format!(
+            "note target '{target_name}' declares `[package.metadata.{NOTE_CODEC_TABLE_NAME}]` \
+             but emitted no note storage schema; add one named-field `#[note]` struct"
+        )));
+    }
+    Ok(())
+}
+
+/// Returns true when a package defines at least one note target.
+fn package_has_note_target(package: &midenc_session::miden_project::Package) -> bool {
+    use midenc_session::miden_project::TargetType;
+
+    package
+        .library_target()
+        .is_some_and(|target| target.inner().ty == TargetType::Note)
+        || package
+            .executable_targets()
+            .iter()
+            .any(|target| target.inner().ty == TargetType::Note)
+}
+
+/// Builds and attaches the note codec declared by the current project package.
+fn attach_note_codec(
+    package: &mut Package,
+    context: &TargetAssemblyContext<'_>,
+) -> Result<(), Report> {
+    let Some(component) = crate::cargo::build_project_note_codec(
+        context.package.as_ref(),
+        context.manifest_path,
+        context.project_root.as_ref(),
+        package,
+    )?
+    else {
+        return Ok(());
+    };
+
+    let section_id = midenc_frontend_wasm_metadata::package_note_codec_section_id();
+    set_unique_section(package, section_id, component, "note codec")
+}
+
+/// Attach the note storage schema to the assembled package.
+fn attach_note_storage_schema(
+    package: &mut Package,
+    note_storage_schema: Option<&[u8]>,
+) -> Result<(), Report> {
+    if let Some(bytes) = note_storage_schema {
+        validate_note_storage_schema(bytes)?;
+        let section_id = midenc_frontend_wasm_metadata::package_note_storage_schema_section_id();
+        set_unique_section(package, section_id, bytes.to_vec(), "note storage schema")?;
+    }
+    Ok(())
+}
+
+/// Validates a note storage schema with the rules every consumer applies on read.
+///
+/// The check makes the producer build fail with the consumer diagnostic. Without it, a
+/// package could publish a schema that every reader rejects, and the author would learn
+/// about the defect from a consumer instead of the build.
+fn validate_note_storage_schema(bytes: &[u8]) -> Result<(), Report> {
+    let text = core::str::from_utf8(bytes)
+        .map_err(|error| Report::msg(format!("the note storage schema is not UTF-8: {error}")))?;
+    miden_note_schema::NoteStorageSchema::from_wit_text(text).map_err(|error| {
+        Report::msg(format!("the note storage schema fails consumer validation: {error}"))
+    })?;
+    Ok(())
+}
+
+/// Adds one package section and rejects an existing section with the same identifier.
+fn set_unique_section(
+    package: &mut Package,
+    section_id: miden_mast_package::SectionId,
+    bytes: Vec<u8>,
+    description: &str,
+) -> Result<(), Report> {
+    use miden_mast_package::Section;
+
+    if package.sections.iter().any(|section| section.id == section_id) {
+        return Err(Report::msg(format!(
+            "cannot attach {description}: package already contains section `{section_id}`"
+        )));
+    }
+    package.sections.push(Section::new(section_id, bytes));
     Ok(())
 }
 
@@ -96,22 +240,29 @@ pub(crate) fn post_process_package(
 fn attach_account_component_metadata(
     package: &mut Package,
     account_component_metadata_bytes: Option<&[u8]>,
-) {
-    use miden_mast_package::{Section, SectionId};
+) -> Result<(), Report> {
+    use miden_mast_package::SectionId;
     if let Some(bytes) = account_component_metadata_bytes {
-        package
-            .sections
-            .push(Section::new(SectionId::ACCOUNT_COMPONENT_METADATA, bytes.to_vec()));
+        set_unique_section(
+            package,
+            SectionId::ACCOUNT_COMPONENT_METADATA,
+            bytes.to_vec(),
+            "account component metadata",
+        )?;
     }
+    Ok(())
 }
 
 /// Attach the component's public WIT source to the assembled package.
-fn attach_component_wit(package: &mut Package, component_wit_bytes: Option<&[u8]>) {
-    use miden_mast_package::Section;
+fn attach_component_wit(
+    package: &mut Package,
+    component_wit_bytes: Option<&[u8]>,
+) -> Result<(), Report> {
     if let Some(bytes) = component_wit_bytes {
         let id = midenc_frontend_wasm_metadata::package_wit_section_id();
-        package.sections.push(Section::new(id, bytes.to_vec()));
+        set_unique_section(package, id, bytes.to_vec(), "component WIT")?;
     }
+    Ok(())
 }
 
 /// Extend the package advice map with the component's rodata segments.
@@ -123,3 +274,95 @@ fn extend_rodata_advice_map(package: &mut Package, rodata: &[midenc_codegen_masm
     let advice_map = rodata.iter().map(|segment| (segment.digest, segment.to_elements())).collect();
     package.extend_advice_map(advice_map);
 }
+
+#[cfg(test)]
+mod tests {
+    use alloc::string::ToString;
+
+    use miden_mast_package::SectionId;
+    use midenc_session::miden_project::TargetType;
+
+    use super::*;
+
+    #[test]
+    fn attach_rejects_a_schema_that_consumers_cannot_read() {
+        let mut package = (*midenc_codegen_masm::intrinsics::load()).clone();
+
+        let error = attach_note_storage_schema(&mut package, Some(b"not wit at all"))
+            .unwrap_err()
+            .to_string();
+
+        assert!(error.contains("fails consumer validation"), "unexpected error: {error}");
+    }
+
+    #[test]
+    fn attach_accepts_a_schema_that_consumers_can_read() {
+        let mut package = (*midenc_codegen_masm::intrinsics::load()).clone();
+        let schema = b"package test:note-schema@1.0.0;
+
+interface note-storage {
+    record note {
+        value: u64,
+    }
+
+    type storage = note;
+}
+";
+
+        attach_note_storage_schema(&mut package, Some(schema.as_slice())).unwrap();
+
+        let id = midenc_frontend_wasm_metadata::package_note_storage_schema_section_id();
+        assert!(package.sections.iter().any(|section| section.id == id));
+    }
+
+    #[test]
+    fn unique_sections_reject_an_existing_identifier() {
+        let mut package = (*midenc_codegen_masm::intrinsics::load()).clone();
+        let id = SectionId::custom("test_unique_section").unwrap();
+
+        set_unique_section(&mut package, id.clone(), vec![1], "test section").unwrap();
+        let error = set_unique_section(&mut package, id, vec![2], "test section")
+            .unwrap_err()
+            .to_string();
+
+        assert!(error.contains("already contains section `test_unique_section`"));
+    }
+
+    #[test]
+    fn codec_metadata_skips_non_note_target_when_package_has_note_target() {
+        validate_note_codec_declaration(true, true, TargetType::Library, false, "library").unwrap();
+    }
+
+    #[test]
+    fn codec_metadata_requires_a_note_target_in_the_package() {
+        let error =
+            validate_note_codec_declaration(true, false, TargetType::Library, false, "library")
+                .unwrap_err()
+                .to_string();
+        assert!(error.contains("defines no note target"));
+    }
+
+    #[test]
+    fn codec_metadata_requires_a_schema_on_the_note_target() {
+        let missing_schema =
+            validate_note_codec_declaration(true, true, TargetType::Note, false, "schema-less")
+                .unwrap_err()
+                .to_string();
+        assert!(missing_schema.contains("emitted no note storage schema"));
+
+        validate_note_codec_declaration(true, true, TargetType::Note, true, "note").unwrap();
+        validate_note_codec_declaration(false, false, TargetType::Library, false, "library")
+            .unwrap();
+    }
+
+    #[test]
+    fn codec_attaches_only_to_a_root_note_that_declares_one() {
+        use crate::pipeline::observer::TargetRole;
+
+        assert!(attaches_note_codec(true, TargetType::Note, TargetRole::Root));
+        assert!(!attaches_note_codec(true, TargetType::Note, TargetRole::Dependency));
+        assert!(!attaches_note_codec(true, TargetType::Note, TargetRole::RequiredLibrary));
+        assert!(!attaches_note_codec(true, TargetType::Library, TargetRole::Root));
+        assert!(!attaches_note_codec(false, TargetType::Note, TargetRole::Root));
+    }
+}
diff --git a/midenc-compile/src/pipeline/backend.rs b/midenc-compile/src/pipeline/backend.rs
index 1db71fdc83..1e944859a1 100644
--- a/midenc-compile/src/pipeline/backend.rs
+++ b/midenc-compile/src/pipeline/backend.rs
@@ -51,7 +51,8 @@ use crate::{CodegenOutput, CompilerResult, MidenComponent};
 ///   asks the advice provider for the data behind it, so a package assembled without the
 ///   advice map fails at run time, in the VM, with nothing in the build to point at.
 /// - [`sections`](LoweredTarget::sections) carries the out-of-band payloads — the serialized
-///   account-component metadata and the component's public WIT — that become package sections.
+///   account-component metadata, the component's public WIT, and the note storage schema — that
+///   become package sections.
 /// - [`source_provenance`](LoweredTarget::source_provenance) is what the assembler hashes to
 ///   decide whether a cached build of this target is still current.
 ///
@@ -830,8 +831,8 @@ mod tests {
                 package,
                 &found.component,
                 &found.sections,
-                cx.assembly().target,
-                cx.assembly().package_registry,
+                cx.assembly(),
+                cx.role(),
             )
         }
 
diff --git a/midenc-compile/src/pipeline/frontends/hir.rs b/midenc-compile/src/pipeline/frontends/hir.rs
index 0942260190..8dacbd3b1b 100644
--- a/midenc-compile/src/pipeline/frontends/hir.rs
+++ b/midenc-compile/src/pipeline/frontends/hir.rs
@@ -393,8 +393,8 @@ impl Frontend for HirFrontend {
             package,
             &found.component,
             &found.sections,
-            cx.assembly().target,
-            cx.assembly().package_registry,
+            cx.assembly(),
+            cx.role(),
         )
     }
 
diff --git a/midenc-compile/src/pipeline/frontends/rust.rs b/midenc-compile/src/pipeline/frontends/rust.rs
index efceda88c8..201b66149f 100644
--- a/midenc-compile/src/pipeline/frontends/rust.rs
+++ b/midenc-compile/src/pipeline/frontends/rust.rs
@@ -621,7 +621,14 @@ trim-paths = [\"diagnostics\", \"object\"]
     std::fs::write(&manifest_path, &cargo_toml)
         .map_err(|err| Report::msg(format!("failed to generate temporary Cargo.toml: {err}")))?;
 
-    let cargo_build_args = build_cargo_args(&manifest_path, options);
+    let cargo_build_args = build_cargo_args(
+        Some(&manifest_path),
+        options.profile == "release",
+        options.workspace,
+        &options.packages,
+        (options.cargo_locked, options.cargo_offline),
+        "\"s\"",
+    );
 
     // The same mandatory set and inherited-flag precedence as the manifest route: a present
     // `CARGO_ENCODED_RUSTFLAGS` is authoritative over plain `RUSTFLAGS`.
@@ -674,7 +681,7 @@ trim-paths = [\"diagnostics\", \"object\"]
     cargo.args(&cargo_build_args);
 
     // Handle the target for buildable commands
-    crate::rust::install_wasm32_target(wasi, toolchain.as_deref())?;
+    crate::rust::install_wasm32_target(wasi, toolchain.as_deref(), options.cargo_offline)?;
 
     cargo.arg("--target").arg(format!("wasm32-{wasi}"));
 
@@ -822,7 +829,15 @@ fn rustc(
     Ok(output_file)
 }
 
-fn build_cargo_args(manifest_path: &Path, options: &Options) -> Vec<String> {
+/// Builds the shared argument vector for a nested `cargo build` invocation.
+pub(super) fn build_cargo_args<P: core::fmt::Display>(
+    manifest_path: Option<&Path>,
+    release: bool,
+    workspace: bool,
+    packages: &[P],
+    cargo_policy: (bool, bool),
+    release_opt_level: &str,
+) -> Vec<String> {
     let mut args = vec!["build".to_string()];
 
     // Add build-std flags required for Miden compilation
@@ -844,7 +859,7 @@ fn build_cargo_args(manifest_path: &Path, options: &Options) -> Vec<String> {
         ("profile.dev.overflow-checks", "false"),
         ("profile.dev.debug", "true"),
         ("profile.dev.debug-assertions", "false"),
-        ("profile.release.opt-level", "\"s\""),
+        ("profile.release.opt-level", release_opt_level),
         ("profile.release.lto", "true"),
         ("profile.release.codegen-units", "1"),
         ("profile.release.panic", "\"abort\""),
@@ -864,18 +879,23 @@ fn build_cargo_args(manifest_path: &Path, options: &Options) -> Vec<String> {
     }
 
     // Forward cargo-specific options
-    if options.profile == "release" {
+    if release {
         args.push("--release".to_string());
     }
+    args.extend(
+        crate::cargo::apply_cargo_policy(cargo_policy.0, cargo_policy.1).map(ToString::to_string),
+    );
 
-    args.push("--manifest-path".to_string());
-    args.push(manifest_path.to_string_lossy().to_string());
+    if let Some(manifest_path) = manifest_path {
+        args.push("--manifest-path".to_string());
+        args.push(manifest_path.to_string_lossy().to_string());
+    }
 
-    if options.workspace {
+    if workspace {
         args.push("--workspace".to_string());
     }
 
-    for package in &options.packages {
+    for package in packages {
         args.push("--package".to_string());
         args.push(package.to_string());
     }
@@ -1632,8 +1652,8 @@ impl Frontend for RustProjectFrontend {
             package,
             &found.component,
             &found.sections,
-            cx.assembly().target,
-            cx.assembly().package_registry,
+            cx.assembly(),
+            cx.role(),
         )
     }
 }
@@ -1986,7 +2006,14 @@ pub(crate) mod manifest {
         _source_manager: Arc<dyn SourceManager + Send + Sync>,
     ) -> CompilerResult<InputFile> {
         let rustup_toolchain = crate::rust::rustup_toolchain();
-        let cargo_build_args = build_cargo_args(cargo_opts, compiler_opts.optimize);
+        let cargo_build_args = super::build_cargo_args(
+            cargo_opts.manifest_path.as_deref(),
+            cargo_opts.release,
+            cargo_opts.workspace,
+            &cargo_opts.packages,
+            (cargo_opts.locked, cargo_opts.offline),
+            cargo_profile_opt_level(compiler_opts.optimize),
+        );
 
         let inherited_encoded = std::env::var_os("CARGO_ENCODED_RUSTFLAGS");
         let inherited_plain = std::env::var_os("RUSTFLAGS");
@@ -2014,6 +2041,7 @@ pub(crate) mod manifest {
             &cargo_build_args,
             env,
             cargo_target_dir.as_deref(),
+            cargo_opts.offline,
         )?;
 
         assert_eq!(wasm_outputs.len(), 1, "expected only one Wasm artifact");
@@ -2139,76 +2167,13 @@ pub(crate) mod manifest {
         }
     }
 
-    /// Builds the argument vector for the underlying `cargo build` invocation.
-    fn build_cargo_args(cargo_opts: &CargoOptions, opt_level: OptLevel) -> Vec<String> {
-        let mut args = vec!["build".to_string()];
-
-        // Add build-std flags required for Miden compilation
-        args.extend(
-            [
-                "-Z",
-                "build-std=core,alloc,panic_abort",
-                "-Z",
-                "build-std-features=optimize_for_size",
-            ]
-            .into_iter()
-            .map(|s| s.to_string()),
-        );
-
-        // Configure profile settings
-        let cfg_pairs: Vec<(&str, &str)> = vec![
-            ("profile.dev.panic", "\"abort\""),
-            ("profile.dev.opt-level", "1"),
-            ("profile.dev.overflow-checks", "false"),
-            ("profile.dev.debug", "true"),
-            ("profile.dev.debug-assertions", "false"),
-            ("profile.release.opt-level", cargo_profile_opt_level(opt_level)),
-            ("profile.release.lto", "true"),
-            ("profile.release.codegen-units", "1"),
-            ("profile.release.panic", "\"abort\""),
-            // The guest Wasm needs DWARF (`debug = true` above) so the compiler can turn
-            // it into Miden debug information — but the host-side units of this nested
-            // build (build scripts, proc macros, and their whole native Miden dependency
-            // cone) do not. When a profile sets `debug` explicitly, the host units
-            // inherit it, which was measured at ~94% of a 310 MB proc-macro artifact,
-            // repeated in every build directory a test suite uses.
-            ("profile.dev.build-override.debug", "false"),
-            ("profile.release.build-override.debug", "false"),
-        ];
-
-        for (key, value) in cfg_pairs {
-            args.push("--config".to_string());
-            args.push(format!("{key}={value}"));
-        }
-
-        // Forward cargo-specific options
-        if cargo_opts.release {
-            args.push("--release".to_string());
-        }
-
-        if let Some(ref manifest_path) = cargo_opts.manifest_path {
-            args.push("--manifest-path".to_string());
-            args.push(manifest_path.to_string_lossy().to_string());
-        }
-
-        if cargo_opts.workspace {
-            args.push("--workspace".to_string());
-        }
-
-        for package in &cargo_opts.packages {
-            args.push("--package".to_string());
-            args.push(package.to_string());
-        }
-
-        args
-    }
-
     fn run_cargo<E>(
         wasi: &str,
         toolchain: Option<&str>,
         spawn_args: &[String],
         env: E,
         cargo_target_dir: Option<&Path>,
+        offline: bool,
     ) -> CompilerResult<Vec<PathBuf>>
     where
         E: IntoIterator<Item = (&'static str, String)>,
@@ -2233,7 +2198,7 @@ pub(crate) mod manifest {
         cargo.args(spawn_args);
 
         // Handle the target for buildable commands
-        crate::rust::install_wasm32_target(wasi, None)?;
+        crate::rust::install_wasm32_target(wasi, None, offline)?;
 
         cargo.arg("--target").arg(format!("wasm32-{wasi}"));
 
@@ -3892,6 +3857,27 @@ path = "lib.rs"
         assert_eq!(merged, vec!["--cfg".to_string(), "miden".to_string()]);
     }
 
+    /// The root Cargo policy is forwarded to the manifest build command.
+    #[test]
+    fn the_cargo_resolution_policy_is_handed_to_the_nested_build() {
+        let options = crate::cargo::CargoOptions {
+            locked: true,
+            offline: true,
+            ..Default::default()
+        };
+        let args = build_cargo_args(
+            options.manifest_path.as_deref(),
+            options.release,
+            options.workspace,
+            &options.packages,
+            (options.locked, options.offline),
+            "2",
+        );
+
+        assert!(args.iter().any(|arg| arg == "--locked"));
+        assert!(args.iter().any(|arg| arg == "--offline"));
+    }
+
     /// A WebAssembly module with a body, for the lowering half of the entry point.
     const MANIFEST_WAT: &str = r#"
 (module
diff --git a/midenc-compile/src/pipeline/frontends/wasm.rs b/midenc-compile/src/pipeline/frontends/wasm.rs
index af3d2bd7a6..c2a3218bfb 100644
--- a/midenc-compile/src/pipeline/frontends/wasm.rs
+++ b/midenc-compile/src/pipeline/frontends/wasm.rs
@@ -591,8 +591,8 @@ impl Frontend for WasmFrontend {
             package,
             &found.component,
             &found.sections,
-            cx.assembly().target,
-            cx.assembly().package_registry,
+            cx.assembly(),
+            cx.role(),
         )
     }
 
diff --git a/midenc-compile/src/pipeline/seed.rs b/midenc-compile/src/pipeline/seed.rs
index afed7bedb0..00f2e242a5 100644
--- a/midenc-compile/src/pipeline/seed.rs
+++ b/midenc-compile/src/pipeline/seed.rs
@@ -438,8 +438,8 @@ impl Frontend for SeedFrontend {
             package,
             &found.component,
             &found.sections,
-            cx.assembly().target,
-            cx.assembly().package_registry,
+            cx.assembly(),
+            cx.role(),
         )
     }
 
@@ -605,8 +605,8 @@ mod tests {
                 package,
                 &found.component,
                 &found.sections,
-                cx.assembly().target,
-                cx.assembly().package_registry,
+                cx.assembly(),
+                cx.role(),
             )
         }
 
diff --git a/midenc-compile/src/pipeline/testing.rs b/midenc-compile/src/pipeline/testing.rs
index bad2f5c6da..4f1734577d 100644
--- a/midenc-compile/src/pipeline/testing.rs
+++ b/midenc-compile/src/pipeline/testing.rs
@@ -215,6 +215,7 @@ pub(crate) fn component_in_namespace(
         sections: midenc_frontend_wasm_metadata::PackageSections {
             account_component_metadata: metadata,
             component_wit: None,
+            note_storage_schema: None,
         },
         source_provenance: ProjectSourceProvenanceInputs {
             root: SourceFileProvenance {
diff --git a/midenc-compile/src/rust.rs b/midenc-compile/src/rust.rs
index 3a6170f0d2..ffc2d08e36 100644
--- a/midenc-compile/src/rust.rs
+++ b/midenc-compile/src/rust.rs
@@ -13,7 +13,16 @@ use midenc_hir::Report;
 
 use crate::CompilerResult;
 
-pub fn install_wasm32_target(wasi: &str, toolchain: Option<&str>) -> CompilerResult<()> {
+/// Ensures that the requested Wasm target is installed for the selected Rust toolchain.
+///
+/// The target is detected directly in the selected toolchain's sysroot. When `offline` is true,
+/// this fails with installation guidance if the target is absent; it never invokes rustup to
+/// install the target.
+pub fn install_wasm32_target(
+    wasi: &str,
+    toolchain: Option<&str>,
+    offline: bool,
+) -> CompilerResult<()> {
     let Some(toolchain) = toolchain.map(ToString::to_string).or_else(rustup_toolchain) else {
         return Err(Report::msg(format!(
             "failed to find the `wasm32-{wasi}` target and `rustup` is not available. If you're \
@@ -24,15 +33,21 @@ pub fn install_wasm32_target(wasi: &str, toolchain: Option<&str>) -> CompilerRes
 
     log::info!(target: "driver", "verifying wasm32-{wasi} target is installed for the {toolchain} toolchain..");
 
+    let target = format!("wasm32-{wasi}");
     let sysroot = get_sysroot(Some(&toolchain))?;
     if sysroot.join(format!("lib/rustlib/wasm32-{wasi}")).exists() {
         log::info!(target: "driver", "wasm32-{wasi} is available");
         return Ok(());
     }
+    if offline {
+        return Err(Report::msg(format!(
+            "the `{target}` target is not installed for the `{toolchain}` toolchain; install it \
+             with `rustup target add --toolchain {toolchain} {target}` or drop `--offline`"
+        )));
+    }
 
     log::info!(target: "driver", "installing wasm32-{wasi} target");
 
-    let target = format!("wasm32-{wasi}");
     let output = Command::new("rustup")
         .arg("target")
         .arg("add")
@@ -87,7 +102,38 @@ pub fn get_sysroot(toolchain: Option<&str>) -> CompilerResult<PathBuf> {
     Ok(sysroot)
 }
 
-pub fn spawn_cargo(mut cmd: Command, cargo: &Path) -> CompilerResult<Vec<Artifact>> {
+/// Runs a Cargo command and exits the process with Cargo's status when the build fails.
+///
+/// The frontend build paths use this so a failed user build ends the tool with Cargo's own
+/// exit code. Callers that must report the failure themselves use [`run_cargo`].
+pub fn spawn_cargo(cmd: Command, cargo: &Path) -> CompilerResult<Vec<Artifact>> {
+    let (status, artifacts) = run_cargo_inner(cmd, cargo)?;
+    if !status.success() {
+        std::process::exit(status.code().unwrap_or(1));
+    }
+    Ok(artifacts)
+}
+
+/// Runs a Cargo command and returns an error when the build fails.
+///
+/// Nested builds such as the note codec build use this so their error context and recovery
+/// guidance reach the user instead of the process ending with Cargo's status.
+pub fn run_cargo(cmd: Command, cargo: &Path) -> CompilerResult<Vec<Artifact>> {
+    let (status, artifacts) = run_cargo_inner(cmd, cargo)?;
+    if !status.success() {
+        return Err(Report::msg(format!(
+            "`{cargo}` failed with {status}",
+            cargo = cargo.display()
+        )));
+    }
+    Ok(artifacts)
+}
+
+/// Spawns a Cargo command and collects its Wasm artifacts together with the exit status.
+fn run_cargo_inner(
+    mut cmd: Command,
+    cargo: &Path,
+) -> CompilerResult<(std::process::ExitStatus, Vec<Artifact>)> {
     use std::io::BufRead;
 
     log::debug!(target: "driver", "spawning command {cmd:?}");
@@ -142,11 +188,7 @@ pub fn spawn_cargo(mut cmd: Command, cargo: &Path) -> CompilerResult<Vec<Artifac
         );
     }
 
-    if !status.success() {
-        std::process::exit(status.code().unwrap_or(1));
-    }
-
-    Ok(artifacts)
+    Ok((status, artifacts))
 }
 
 pub fn rustup_toolchain() -> Option<String> {
@@ -227,3 +269,19 @@ impl BuildOutput {
         }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    #[cfg(unix)]
+    fn run_cargo_reports_a_failed_status_instead_of_exiting() {
+        let mut cmd = Command::new("sh");
+        cmd.args(["-c", "exit 3"]).stdout(std::process::Stdio::piped());
+
+        let error = run_cargo(cmd, Path::new("sh")).unwrap_err().to_string();
+
+        assert!(error.contains("failed with"), "unexpected error: {error}");
+    }
+}
diff --git a/midenc-session/src/options/mod.rs b/midenc-session/src/options/mod.rs
index 78e914da36..9716f8364c 100644
--- a/midenc-session/src/options/mod.rs
+++ b/midenc-session/src/options/mod.rs
@@ -34,6 +34,15 @@ pub struct Options {
     pub workspace: bool,
     /// Build the specified packages in the current workspace (used by `cargo miden`)
     pub packages: Vec<String>,
+    /// Require Cargo.lock to remain unchanged in the Rust project build.
+    ///
+    /// The note codec build does not read this option. That build is session-free, and it
+    /// resolves its own crate under its own lockfile.
+    pub cargo_locked: bool,
+    /// Prevent network access in the Rust project build.
+    ///
+    /// The note codec build does not read this option, for the same reason as `cargo_locked`.
+    pub cargo_offline: bool,
     /// The name of the current project target being compiled
     pub target: Option<String>,
     /// The type of target that was requested
@@ -162,6 +171,8 @@ impl Options {
             profile: "dev".to_string(),
             workspace: false,
             packages: vec![],
+            cargo_locked: false,
+            cargo_offline: false,
             target: None,
             target_type: target,
             entrypoint: None,
diff --git a/sdk/.cargo/config.toml b/sdk/.cargo/config.toml
deleted file mode 100644
index 6b509f5b70..0000000000
--- a/sdk/.cargo/config.toml
+++ /dev/null
@@ -1,2 +0,0 @@
-[build]
-target = "wasm32-wasip1"
diff --git a/sdk/alloc/.cargo/config.toml b/sdk/alloc/.cargo/config.toml
new file mode 100644
index 0000000000..7fe3f77d7f
--- /dev/null
+++ b/sdk/alloc/.cargo/config.toml
@@ -0,0 +1,3 @@
+# Per-crate copy: per-member check-each builds run in this directory and default to the Miden Wasm target (a no-op for proc-macro roots, which always build for the host). sdk/ has no directory-wide config so host-side crates build natively.
+[build]
+target = "wasm32-wasip1"
diff --git a/sdk/base-macros/.cargo/config.toml b/sdk/base-macros/.cargo/config.toml
new file mode 100644
index 0000000000..7fe3f77d7f
--- /dev/null
+++ b/sdk/base-macros/.cargo/config.toml
@@ -0,0 +1,3 @@
+# Per-crate copy: per-member check-each builds run in this directory and default to the Miden Wasm target (a no-op for proc-macro roots, which always build for the host). sdk/ has no directory-wide config so host-side crates build natively.
+[build]
+target = "wasm32-wasip1"
diff --git a/sdk/base-macros/Cargo.toml b/sdk/base-macros/Cargo.toml
index 423d53d689..5a964540db 100644
--- a/sdk/base-macros/Cargo.toml
+++ b/sdk/base-macros/Cargo.toml
@@ -20,7 +20,7 @@ default = []
 internal-wit-emit = ["dep:wit-component"]
 
 [dependencies]
-proc-macro2.workspace = true
+proc-macro2 = { workspace = true, features = ["span-locations"] }
 quote.workspace = true
 miden-assembly-syntax.workspace = true
 miden-mast-package.workspace = true
@@ -33,8 +33,8 @@ syn = { workspace = true, features = ["full"] }
 heck.workspace = true
 miden-formatting.workspace = true
 midenc-frontend-wasm-metadata.workspace = true
-wit-bindgen-core = "0.57"
-wit-bindgen-rust = { version = "0.57", default-features = false }
+wit-bindgen-core.workspace = true
+wit-bindgen-rust.workspace = true
 wit-component = { workspace = true, optional = true }
 
 [dev-dependencies]
@@ -43,6 +43,8 @@ miden-assembly = { workspace = true, features = ["std"] }
 miden-protocol = { workspace = true, features = ["std"] }
 miden-field.workspace = true
 miden-field-repr.workspace = true
+midenc-expect-test.workspace = true
+tempfile.workspace = true
 wit-component.workspace = true
 
 [package.metadata.docs.rs]
diff --git a/sdk/base-macros/src/component_macro/mod.rs b/sdk/base-macros/src/component_macro/mod.rs
index 6039e40a7e..16e9a92017 100644
--- a/sdk/base-macros/src/component_macro/mod.rs
+++ b/sdk/base-macros/src/component_macro/mod.rs
@@ -400,9 +400,8 @@ fn expand_component_storage(
 
     let component_metadata = acc_builder.build(call_site_span.into())?;
 
-    let mut metadata_bytes = component_metadata.to_bytes();
-    let padded_len = metadata_bytes.len().div_ceil(16) * 16;
-    metadata_bytes.resize(padded_len, 0);
+    let metadata_bytes =
+        midenc_frontend_wasm_metadata::pad_to_link_section_alignment(component_metadata.to_bytes());
 
     let link_section = generate_link_section(&metadata_bytes);
     let runtime_boilerplate = runtime_boilerplate();
@@ -1465,6 +1464,7 @@ mod tests {
             wit_name: "struct-a".into(),
             is_custom: true,
             path: vec!["StructA".into()],
+            leading_colon: false,
             dependencies: Vec::new(),
         };
 
@@ -1480,6 +1480,7 @@ mod tests {
             wit_name: "struct-a".into(),
             is_custom: true,
             path: vec!["StructA".into()],
+            leading_colon: false,
             dependencies: Vec::new(),
         };
         let prefix = vec!["foo".to_string(), "bar".to_string()];
@@ -1499,6 +1500,7 @@ mod tests {
             wit_name: "struct-a".into(),
             is_custom: true,
             path: vec!["super".into(), "StructA".into()],
+            leading_colon: false,
             dependencies: Vec::new(),
         };
         let prefix = vec!["foo".to_string(), "bar".to_string()];
@@ -1527,6 +1529,7 @@ mod tests {
     #[test]
     fn build_custom_with_entries_prefers_custom_paths() {
         let exported_types = vec![ExportedTypeDef {
+            docs: Vec::new(),
             rust_name: "StructA".into(),
             wit_name: "struct-a".into(),
             kind: ExportedTypeKind::Record { fields: Vec::new() },
diff --git a/sdk/base-macros/src/export_type.rs b/sdk/base-macros/src/export_type.rs
index 70f2a9fc6e..41f55a7211 100644
--- a/sdk/base-macros/src/export_type.rs
+++ b/sdk/base-macros/src/export_type.rs
@@ -1,9 +1,32 @@
+//! Type export and identity guard expansion for `#[export_type]`.
+
 use proc_macro::TokenStream;
+use proc_macro2::TokenStream as TokenStream2;
 use quote::quote;
 use syn::{Item, parse_macro_input};
 
-use crate::types::{exported_type_from_enum, exported_type_from_struct, register_export_type};
+use crate::types::{
+    ExportedTypeDef, custom_type_shape_assertions, export_type_shape_const,
+    exported_type_from_enum, exported_type_from_struct, nominal_type_identity_guards,
+    register_export_type, registered_export_type_map,
+};
+
+/// Builds the guard and identity items emitted next to one exported type.
+fn export_type_identity_items(
+    def: &ExportedTypeDef,
+    generics: &syn::Generics,
+    span: proc_macro2::Span,
+) -> Result<TokenStream2, syn::Error> {
+    let guards = nominal_type_identity_guards(def, span)?;
+    register_export_type(def.clone(), span)?;
+    // The registry lookup runs after registration so a self-referential type sees itself.
+    let registry = registered_export_type_map();
+    let assertions = custom_type_shape_assertions(def, &registry, span)?;
+    let shape_const = export_type_shape_const(def, generics, span);
+    Ok(quote! { #guards #shape_const #assertions })
+}
 
+/// Expands `#[export_type]` and registers the annotated record or enum for schema emission.
 pub(crate) fn expand(attr: TokenStream, item: TokenStream) -> TokenStream {
     if !attr.is_empty() {
         return syn::Error::new_spanned(
@@ -19,21 +42,19 @@ pub(crate) fn expand(attr: TokenStream, item: TokenStream) -> TokenStream {
     match item {
         Item::Struct(item_struct) => {
             let span = item_struct.ident.span();
-            match exported_type_from_struct(&item_struct) {
-                Ok(def) => match register_export_type(def, span) {
-                    Ok(()) => quote! { #item_struct }.into(),
-                    Err(err) => err.to_compile_error().into(),
-                },
+            match exported_type_from_struct(&item_struct)
+                .and_then(|def| export_type_identity_items(&def, &item_struct.generics, span))
+            {
+                Ok(items) => quote! { #item_struct #items }.into(),
                 Err(err) => err.to_compile_error().into(),
             }
         }
         Item::Enum(item_enum) => {
             let span = item_enum.ident.span();
-            match exported_type_from_enum(&item_enum) {
-                Ok(def) => match register_export_type(def, span) {
-                    Ok(()) => quote! { #item_enum }.into(),
-                    Err(err) => err.to_compile_error().into(),
-                },
+            match exported_type_from_enum(&item_enum)
+                .and_then(|def| export_type_identity_items(&def, &item_enum.generics, span))
+            {
+                Ok(items) => quote! { #item_enum #items }.into(),
                 Err(err) => err.to_compile_error().into(),
             }
         }
diff --git a/sdk/base-macros/src/lib.rs b/sdk/base-macros/src/lib.rs
index 29cce44958..7225a806f5 100644
--- a/sdk/base-macros/src/lib.rs
+++ b/sdk/base-macros/src/lib.rs
@@ -75,6 +75,7 @@ mod fpi;
 mod generate;
 mod manifest_paths;
 mod note;
+mod note_schema;
 mod script;
 #[cfg(test)]
 mod test_support;
@@ -285,8 +286,11 @@ pub fn account_procedure(
     component_macro::expand_account_procedure(attr, item)
 }
 
-/// Generates an equvalent type in the WIT interface.
-/// Required for every type mentioned in the public methods of an account component.
+/// Generates an equivalent type in the WIT interface.
+///
+/// Use this macro for every custom type in the public methods of an account component. Exported
+/// records and enums can also appear in note storage schemas. The macro emits a hidden shape
+/// constant that lets `#[note]` confirm the exact Rust type at compile time.
 ///
 /// Intended to be used together with `#[component]` attribute macro.
 #[proc_macro_attribute]
@@ -304,6 +308,20 @@ pub fn export_type(
 /// - the associated inherent `impl` block that contains an entrypoint method annotated with
 ///   `#[note_script]`
 ///
+/// # Note storage schema
+///
+/// A named-field `#[note]` struct emits a WIT storage schema into the package's
+/// `note_storage_schema` section. Field doc comments are copied into the schema.
+///
+/// A note struct must use named fields or no fields. A tuple struct is a compile error. A storage
+/// field cannot use `Vec`. Apply `#[export_type]` to each nested custom type, and place that type
+/// definition before the `#[note]` struct. Each field must use the exact registered
+/// `#[export_type]` Rust type. A different type with the same name fails the hidden shape check.
+///
+/// There can be only one `#[note]` struct per linked artifact, so a note crate cannot depend on
+/// another note crate. A second struct fails at link time because it defines the duplicate
+/// `__MIDEN_NOTE_STORAGE_SCHEMA_UNIQUENESS_GUARD` symbol.
+///
 /// # Foreign Procedure Invocation (FPI)
 ///
 /// Use `#[account(...)]` on an empty struct to generate typed active and foreign account wrappers
diff --git a/sdk/base-macros/src/note.rs b/sdk/base-macros/src/note.rs
index ab9ec8749f..e40171e888 100644
--- a/sdk/base-macros/src/note.rs
+++ b/sdk/base-macros/src/note.rs
@@ -1,3 +1,5 @@
+//! Note script and note storage struct expansion for `#[note]`.
+
 use std::collections::BTreeSet;
 
 use heck::{ToKebabCase, ToSnakeCase};
@@ -11,10 +13,11 @@ use syn::{
 
 use crate::{
     boilerplate::runtime_boilerplate,
+    note_schema::{expand_note_storage_schema, note_storage_schema_uniqueness_guard},
     types::{TypeRef, map_type_to_type_ref, registered_export_type_map},
     util::{
-        generate_frontend_link_section, generate_wit_link_section, is_type_named,
-        is_unit_return_type,
+        NOTE_NAMED_FIELDS_ERROR, generate_frontend_link_section, generate_wit_link_section,
+        is_type_named, is_unit_return_type,
     },
     wit_builder::WitBuilder,
     wit_world::{ManifestPackage, write_world_block},
@@ -123,8 +126,10 @@ fn expand_method_marker_attr(
     quote!(#item_fn)
 }
 
+/// Expands a note input struct with felt encoding, decoding, and schema metadata.
 fn expand_note_struct(item_struct: ItemStruct) -> TokenStream2 {
     let struct_ident = &item_struct.ident;
+    let uniqueness_guard = note_storage_schema_uniqueness_guard();
 
     if !item_struct.generics.params.is_empty() {
         return syn::Error::new(
@@ -133,11 +138,14 @@ fn expand_note_struct(item_struct: ItemStruct) -> TokenStream2 {
         )
         .into_compile_error();
     }
+    if let syn::Fields::Unnamed(fields) = &item_struct.fields {
+        return syn::Error::new(fields.span(), NOTE_NAMED_FIELDS_ERROR).into_compile_error();
+    }
 
     let to_felt_repr_impl = note_storage_encoding(&item_struct);
-    let from_impl = match &item_struct.fields {
+    let (from_impl, schema_static) = match &item_struct.fields {
         syn::Fields::Unit => {
-            quote! {
+            let from_impl = quote! {
                 impl ::core::convert::TryFrom<&[::miden::Felt]> for #struct_ident {
                     type Error = ::miden::felt_repr::FeltReprError;
 
@@ -148,9 +156,18 @@ fn expand_note_struct(item_struct: ItemStruct) -> TokenStream2 {
                         Ok(Self)
                     }
                 }
-            }
+            };
+            (from_impl, quote! {})
         }
         syn::Fields::Named(fields) => {
+            // A schema error replaces the schema static only. Everything else is computable from
+            // the struct alone, so the macro still emits it. This keeps the schema diagnostic
+            // alone: neither the use sites nor the `#[note]` `impl` block add "cannot find type"
+            // or trait-bound errors on top of it.
+            let schema_static = match expand_note_storage_schema(&item_struct) {
+                Ok(schema_static) => schema_static,
+                Err(err) => err.into_compile_error(),
+            };
             let field_inits = fields.named.iter().map(|field| {
                 let ident = field.ident.as_ref().expect("named fields must have identifiers");
                 let ty = &field.ty;
@@ -159,7 +176,7 @@ fn expand_note_struct(item_struct: ItemStruct) -> TokenStream2 {
                 }
             });
 
-            quote! {
+            let from_impl = quote! {
                 impl ::core::convert::TryFrom<&[::miden::Felt]> for #struct_ident {
                     type Error = ::miden::felt_repr::FeltReprError;
 
@@ -171,30 +188,10 @@ fn expand_note_struct(item_struct: ItemStruct) -> TokenStream2 {
                         Ok(value)
                     }
                 }
-            }
-        }
-        syn::Fields::Unnamed(fields) => {
-            let field_inits = fields.unnamed.iter().map(|field| {
-                let ty = &field.ty;
-                quote! {
-                    <#ty as ::miden::felt_repr::FromFeltRepr>::from_felt_repr(&mut reader)?
-                }
-            });
-
-            quote! {
-                impl ::core::convert::TryFrom<&[::miden::Felt]> for #struct_ident {
-                    type Error = ::miden::felt_repr::FeltReprError;
-
-                    #[inline(always)]
-                    fn try_from(felts: &[::miden::Felt]) -> Result<Self, Self::Error> {
-                        let mut reader = ::miden::felt_repr::FeltReader::new(felts);
-                        let value = Self(#(#field_inits),*);
-                        reader.ensure_eof()?;
-                        Ok(value)
-                    }
-                }
-            }
+            };
+            (from_impl, schema_static)
         }
+        syn::Fields::Unnamed(_) => unreachable!("tuple note structs are rejected above"),
     };
 
     quote! {
@@ -203,6 +200,8 @@ fn expand_note_struct(item_struct: ItemStruct) -> TokenStream2 {
         #to_felt_repr_impl
 
         impl ::miden::active_note::ActiveNote for #struct_ident {}
+        #schema_static
+        #uniqueness_guard
     }
 }
 
@@ -226,17 +225,9 @@ fn note_storage_encoding(item_struct: &ItemStruct) -> TokenStream2 {
                 }
             })
             .collect(),
-        syn::Fields::Unnamed(fields) => fields
-            .unnamed
-            .iter()
-            .enumerate()
-            .map(|(index, _)| {
-                let index = syn::Index::from(index);
-                quote! {
-                    ::miden::felt_repr::ToFeltRepr::write_felt_repr(&self.#index, writer);
-                }
-            })
-            .collect(),
+        syn::Fields::Unnamed(_) => {
+            unreachable!("tuple note structs are rejected before storage encoding")
+        }
     };
 
     let writer_ident = if field_writes.is_empty() {
@@ -355,8 +346,7 @@ fn expand_note_impl(item_impl: ItemImpl) -> TokenStream2 {
         Ok(metadata) => metadata,
         Err(err) => return err.to_compile_error(),
     };
-    let component_package =
-        format!("miden:{}", metadata.package.name().into_inner().to_kebab_case());
+    let component_package = metadata.component_package();
     let interface_name = component_package.to_kebab_case();
     let world_name = format!("{interface_name}-world");
     let interface_module = interface_name.to_snake_case();
@@ -371,7 +361,7 @@ fn expand_note_impl(item_impl: ItemImpl) -> TokenStream2 {
 
     let inline_wit = build_note_script_wit(
         &component_package,
-        metadata.package.version().inner(),
+        metadata.component_version(),
         &interface_name,
         &world_name,
         &export_name,
@@ -1196,6 +1186,194 @@ mod tests {
     use syn::parse_quote;
 
     use super::*;
+    use crate::{
+        test_support::compile_rust_source,
+        types::{lock_export_type_registry_for_tests, reset_export_type_registry_for_tests},
+    };
+
+    #[test]
+    fn named_note_struct_emits_storage_schema_static() {
+        let _registry_guard = lock_export_type_registry_for_tests();
+        reset_export_type_registry_for_tests();
+        let item_struct: ItemStruct = parse_quote! {
+            struct PaymentNote {
+                target: AccountId,
+            }
+        };
+
+        let tokens = expand_note_struct(item_struct).to_string();
+
+        assert!(tokens.contains("__MIDEN_NOTE_STORAGE_SCHEMA_BYTES"));
+        assert!(tokens.contains(crate::note_schema::NOTE_STORAGE_SCHEMA_UNIQUENESS_GUARD_SYMBOL));
+        assert!(tokens.contains("miden_note_schema"));
+    }
+
+    #[test]
+    fn unit_note_struct_does_not_emit_storage_schema() {
+        let item_struct: ItemStruct = parse_quote!(
+            struct EmptyNote;
+        );
+
+        let tokens = expand_note_struct(item_struct).to_string();
+
+        assert!(!tokens.contains("__MIDEN_NOTE_STORAGE_SCHEMA_BYTES"));
+        assert!(tokens.contains(crate::note_schema::NOTE_STORAGE_SCHEMA_UNIQUENESS_GUARD_SYMBOL));
+    }
+
+    #[test]
+    fn schema_failure_keeps_the_note_struct_next_to_the_error() {
+        let _registry_guard = lock_export_type_registry_for_tests();
+        reset_export_type_registry_for_tests();
+        let item_struct: ItemStruct = parse_quote! {
+            struct VecNote {
+                values: Vec<u64>,
+            }
+        };
+
+        let tokens = expand_note_struct(item_struct).to_string();
+
+        assert!(tokens.contains("compile_error"), "the schema error must be reported: {tokens}");
+        assert!(tokens.contains("struct VecNote"), "the struct must survive the error: {tokens}");
+        assert!(
+            !tokens.contains("__MIDEN_NOTE_STORAGE_SCHEMA_BYTES"),
+            "no schema metadata is generated for a failed schema: {tokens}"
+        );
+    }
+
+    /// Stand-in for the SDK items that a `#[note]` expansion references.
+    ///
+    /// `compile_rust_source` runs a bare `rustc` without external crates, so the compiled source
+    /// declares the SDK surface itself.
+    const MIDEN_SDK_STUB: &str = r#"
+extern crate self as miden;
+
+#[derive(Debug)]
+pub struct Felt;
+
+pub mod felt_repr {
+    use super::Felt;
+
+    #[derive(Debug)]
+    pub struct FeltReprError;
+
+    pub struct FeltReader<'a>(#[allow(dead_code)] &'a [Felt]);
+
+    impl<'a> FeltReader<'a> {
+        pub fn new(felts: &'a [Felt]) -> Self {
+            Self(felts)
+        }
+
+        pub fn ensure_eof(&self) -> Result<(), FeltReprError> {
+            Ok(())
+        }
+    }
+
+    pub struct FeltWriter<'a>(#[allow(dead_code)] &'a mut Vec<Felt>);
+
+    pub trait FromFeltRepr: Sized {
+        fn from_felt_repr(reader: &mut FeltReader<'_>) -> Result<Self, FeltReprError>;
+    }
+
+    pub trait ToFeltRepr {
+        fn write_felt_repr(&self, writer: &mut FeltWriter<'_>);
+    }
+
+    impl<T> FromFeltRepr for Vec<T> {
+        fn from_felt_repr(_reader: &mut FeltReader<'_>) -> Result<Self, FeltReprError> {
+            Ok(Vec::new())
+        }
+    }
+
+    impl<T> ToFeltRepr for Vec<T> {
+        fn write_felt_repr(&self, _writer: &mut FeltWriter<'_>) {}
+    }
+}
+
+pub mod active_note {
+    use super::Felt;
+
+    pub trait ActiveNote {
+        fn get_sender(&self) -> Felt {
+            Felt
+        }
+    }
+
+    pub fn get_storage() -> Vec<Felt> {
+        Vec::new()
+    }
+}
+"#;
+
+    #[test]
+    fn schema_failure_reports_only_the_schema_diagnostic() {
+        let _registry_guard = lock_export_type_registry_for_tests();
+        reset_export_type_registry_for_tests();
+        let item_struct: ItemStruct = parse_quote! {
+            struct VecNote {
+                values: Vec<u64>,
+            }
+        };
+        let expansion = expand_note_struct(item_struct);
+        // The whole `#[note]` `impl` expansion cannot compile outside a real SDK crate, because it
+        // calls the `miden::generate!` and `bindings::export!` proc macros. The note-script body
+        // below is built with the same generator that the `impl` expansion uses, so the decoding
+        // and `ActiveNote` use sites are the ones a real note crate gets.
+        let note_ty: syn::TypePath = parse_quote!(VecNote);
+        let note_init = note_instantiation(&note_ty);
+        let source = format!(
+            r#"
+{MIDEN_SDK_STUB}
+mod user {{
+    use ::miden::active_note::ActiveNote as _;
+
+    {expansion}
+
+    pub fn takes_note(_note: VecNote) {{}}
+
+    pub fn note_script() {{
+        {note_init}
+        let _ = __miden_note.get_sender();
+    }}
+}}
+fn main() {{}}
+"#
+        );
+
+        let output = compile_rust_source(&source);
+        assert!(!output.status.success(), "a failed note schema must fail the compilation");
+        let stderr = String::from_utf8_lossy(&output.stderr);
+        assert!(
+            stderr.contains("`Vec` is not supported in note storage schemas yet"),
+            "the schema diagnostic is missing:
+{stderr}"
+        );
+        assert!(
+            !stderr.contains("cannot find type"),
+            "the schema diagnostic must not cascade into missing-type errors:
+{stderr}"
+        );
+        assert!(
+            !stderr.contains("the trait bound"),
+            "the schema diagnostic must not cascade into trait-bound errors:
+{stderr}"
+        );
+        assert!(
+            !stderr.contains("is not implemented"),
+            "the schema diagnostic must not cascade into missing-impl errors:
+{stderr}"
+        );
+    }
+
+    #[test]
+    fn tuple_note_struct_requires_named_fields() {
+        let item_struct: ItemStruct = parse_quote!(
+            struct TupleNote(Felt);
+        );
+
+        let tokens = expand_note_struct(item_struct).to_string();
+
+        assert!(tokens.contains(NOTE_NAMED_FIELDS_ERROR));
+    }
 
     #[test]
     fn entrypoint_signature_allows_non_run_name() {
diff --git a/sdk/base-macros/src/note_schema.rs b/sdk/base-macros/src/note_schema.rs
new file mode 100644
index 0000000000..b6bd1ddc0a
--- /dev/null
+++ b/sdk/base-macros/src/note_schema.rs
@@ -0,0 +1,1325 @@
+//! Note storage schema generation for `#[note]` structs.
+
+use std::collections::{BTreeSet, HashMap, HashSet};
+
+use heck::ToKebabCase;
+use midenc_frontend_wasm_metadata::{
+    WASM_NOTE_STORAGE_SCHEMA_CUSTOM_SECTION_NAME, pad_to_link_section_alignment,
+};
+use proc_macro2::{Literal, Span, TokenStream as TokenStream2};
+use quote::quote;
+use semver::Version;
+use syn::{ItemStruct, Type, spanned::Spanned};
+use wit_bindgen_core::wit_parser::Resolve;
+
+use crate::{
+    manifest_paths::SDK_WIT_SOURCE,
+    types::{
+        ExportedField, ExportedTypeDef, ExportedTypeKind, TypeRef, custom_type_shape_assertions,
+        doc_comments, map_type_to_type_ref, nominal_type_identity_guards, registered_export_types,
+    },
+    util::NOTE_NAMED_FIELDS_ERROR,
+    wit_builder::{WitBody, WitBuilder},
+    wit_world::ManifestPackage,
+};
+
+/// Fully qualified SDK core-types interface imported by generated schemas.
+const CORE_TYPES_PACKAGE: &str = "miden:base/core-types@1.0.0";
+/// SDK core-types package name used for the embedded dependency package.
+const CORE_TYPES_PACKAGE_NAME: &str = "miden:base";
+/// SDK interface copied into generated schemas.
+const CORE_TYPES_INTERFACE: &str = "core-types";
+/// Source name reported for generated schema validation errors.
+const NOTE_STORAGE_SCHEMA_SOURCE_NAME: &str = "note-storage-schema.wit";
+/// Storage types accepted by the note schema diagnostic.
+const NOTE_STORAGE_SUPPORTED_TYPES: &str = "`u64`, `u32`, `u8`, `bool`, SDK core-type records, \
+                                            `#[export_type]` records or enums, and `Option<T>` \
+                                            over a supported type";
+/// Linker symbol used to reject multiple note storage schemas in one crate.
+pub(crate) const NOTE_STORAGE_SCHEMA_UNIQUENESS_GUARD_SYMBOL: &str =
+    "__MIDEN_NOTE_STORAGE_SCHEMA_UNIQUENESS_GUARD";
+
+/// A rendered note storage schema and the Rust definitions that produced it.
+struct RenderedNoteStorageSchema {
+    span: Span,
+    source: String,
+    definitions: Vec<ExportedTypeDef>,
+}
+
+/// Generates the note storage schema custom-section static for a named-field note struct.
+pub(crate) fn expand_note_storage_schema(
+    item_struct: &ItemStruct,
+) -> Result<TokenStream2, syn::Error> {
+    let package = ManifestPackage::load_or_default(item_struct.ident.span())?;
+    let registry = registered_export_types();
+    let rendered = render_note_storage_schema_with_registry_model(
+        item_struct,
+        &package.component_package(),
+        package.component_version(),
+        &registry,
+    )?;
+    validate_rendered_note_storage_schema(&rendered)?;
+    // Identity items reference types as they are written at this `#[note]` site, so only the
+    // root definition (whose field types are in scope here) is checked. Registry definitions
+    // carry their own identity items at their `#[export_type]` sites.
+    let root_definition = rendered
+        .definitions
+        .last()
+        .expect("a rendered schema always contains its root definition");
+    let identity_guards = nominal_type_identity_guards(root_definition, rendered.span)?;
+    let registry_by_rust_name = registry
+        .iter()
+        .cloned()
+        .map(|definition| (definition.rust_name.clone(), definition))
+        .collect();
+    let shape_assertions =
+        custom_type_shape_assertions(root_definition, &registry_by_rust_name, rendered.span)?;
+
+    let bytes = pad_to_link_section_alignment(rendered.source.into_bytes());
+
+    let bytes_len = bytes.len();
+    let encoded_bytes = Literal::byte_string(&bytes);
+    let macos_link_section = macos_note_storage_schema_link_section();
+
+    Ok(quote! {
+        #identity_guards
+        #shape_assertions
+
+        // Mach-O limits section names to 16 bytes. Wasm uses the canonical section name below.
+        #[cfg_attr(target_os = "macos", unsafe(link_section = #macos_link_section))]
+        #[cfg_attr(
+            not(target_os = "macos"),
+            unsafe(link_section = #WASM_NOTE_STORAGE_SCHEMA_CUSTOM_SECTION_NAME)
+        )]
+        #[doc(hidden)]
+        #[allow(clippy::octal_escapes)]
+        // No `#[used]`: the section survives without it, and on this target the
+        // attribute additionally lands the bytes in the module's data segments,
+        // growing every package by the size of its own schema.
+        pub static __MIDEN_NOTE_STORAGE_SCHEMA_BYTES: [u8; #bytes_len] = *#encoded_bytes;
+    })
+}
+
+/// Derives the Mach-O link-section name from the canonical Wasm custom-section name.
+fn macos_note_storage_schema_link_section() -> String {
+    let (segment, section) = WASM_NOTE_STORAGE_SCHEMA_CUSTOM_SECTION_NAME
+        .split_once(',')
+        .expect("the note storage schema section name must include a segment");
+    let section = section
+        .get(..section.len().min(16))
+        .expect("the note storage schema section name must be ASCII");
+    format!("{segment},{section}")
+}
+
+/// Emits a fixed linker symbol that permits one note struct per crate.
+pub(crate) fn note_storage_schema_uniqueness_guard() -> TokenStream2 {
+    quote! {
+        const _: () = {
+            // A crate may contain exactly one `#[note]` struct. Reusing a fixed symbol name lets
+            // the linker reject duplicates across modules.
+            #[doc(hidden)]
+            #[used]
+            #[unsafe(export_name = #NOTE_STORAGE_SCHEMA_UNIQUENESS_GUARD_SYMBOL)]
+            static __miden_note_storage_schema_uniqueness_guard: u8 = 0;
+        };
+    }
+}
+
+/// Renders the note storage schema WIT document for a named-field note struct.
+#[cfg(test)]
+fn render_note_storage_schema(
+    item_struct: &ItemStruct,
+    component_package: &str,
+    component_version: &Version,
+) -> Result<String, syn::Error> {
+    let registry = registered_export_types();
+    Ok(render_note_storage_schema_with_registry_model(
+        item_struct,
+        component_package,
+        component_version,
+        &registry,
+    )?
+    .source)
+}
+
+/// Renders a note storage schema against one export-type registry snapshot.
+#[cfg(test)]
+fn render_note_storage_schema_with_registry(
+    item_struct: &ItemStruct,
+    component_package: &str,
+    component_version: &Version,
+    registry: &[ExportedTypeDef],
+) -> Result<String, syn::Error> {
+    Ok(render_note_storage_schema_with_registry_model(
+        item_struct,
+        component_package,
+        component_version,
+        registry,
+    )?
+    .source)
+}
+
+/// Renders a note storage schema and retains its source-definition context.
+fn render_note_storage_schema_with_registry_model(
+    item_struct: &ItemStruct,
+    component_package: &str,
+    component_version: &Version,
+    registry: &[ExportedTypeDef],
+) -> Result<RenderedNoteStorageSchema, syn::Error> {
+    let registry_by_rust_name = registry
+        .iter()
+        .cloned()
+        .map(|definition| (definition.rust_name.clone(), definition))
+        .collect();
+    let root = note_root_type(item_struct, &registry_by_rust_name)?;
+    let custom_types = referenced_custom_types(&root, registry, item_struct.ident.span())?;
+    for definition in custom_types.iter().chain([&root]) {
+        validate_note_storage_definition(definition, item_struct.ident.span())?;
+    }
+    let core_imports = required_core_type_imports(&root, &custom_types);
+    let schema_package = schema_package_name(component_package);
+
+    let mut wit = WitBuilder::new("#[note]", &schema_package, component_version);
+    if !core_imports.is_empty() {
+        wit.use_path(CORE_TYPES_PACKAGE);
+        wit.blank_line();
+    }
+    wit.interface("note-storage", |interface| {
+        if !core_imports.is_empty() {
+            interface.line(&format!(
+                "use core-types.{{{}}};",
+                core_imports.iter().cloned().collect::<Vec<_>>().join(", ")
+            ));
+            interface.blank_line();
+        }
+
+        for custom_type in &custom_types {
+            render_type_definition(interface, custom_type);
+            interface.blank_line();
+        }
+        render_type_definition(interface, &root);
+        interface.blank_line();
+        interface.line(&format!("type storage = {};", root.wit_name));
+    });
+    wit.blank_line();
+    render_core_types_package(&mut wit)?;
+
+    let mut definitions = custom_types;
+    definitions.push(root);
+    Ok(RenderedNoteStorageSchema {
+        span: item_struct.ident.span(),
+        source: wit.finish(),
+        definitions,
+    })
+}
+
+/// Builds the exported type definition for the note storage root.
+fn note_root_type(
+    item_struct: &ItemStruct,
+    registry: &HashMap<String, ExportedTypeDef>,
+) -> Result<ExportedTypeDef, syn::Error> {
+    let syn::Fields::Named(named) = &item_struct.fields else {
+        return Err(syn::Error::new(item_struct.fields.span(), NOTE_NAMED_FIELDS_ERROR));
+    };
+
+    let mut fields = Vec::with_capacity(named.named.len());
+    for field in &named.named {
+        let ident = field.ident.as_ref().expect("named fields must have identifiers");
+        let context = format!("field `{ident}` in type `{}`", item_struct.ident);
+        let ty = map_note_field_type(&field.ty, registry, &context)?;
+        validate_note_storage_type_ref(&ty, field.ty.span(), &context)?;
+        fields.push(ExportedField {
+            docs: doc_comments(&field.attrs),
+            name: ident.to_string(),
+            ty,
+        });
+    }
+
+    Ok(ExportedTypeDef {
+        docs: doc_comments(&item_struct.attrs),
+        rust_name: item_struct.ident.to_string(),
+        wit_name: item_struct.ident.to_string().to_kebab_case(),
+        kind: ExportedTypeKind::Record { fields },
+    })
+}
+
+/// Checks one record or variant against the supported note storage type surface.
+fn validate_note_storage_definition(
+    definition: &ExportedTypeDef,
+    span: Span,
+) -> Result<(), syn::Error> {
+    match &definition.kind {
+        ExportedTypeKind::Record { fields } => {
+            for field in fields {
+                validate_note_storage_type_ref(
+                    &field.ty,
+                    span,
+                    &format!("field `{}` in type `{}`", field.name, definition.rust_name),
+                )?;
+            }
+        }
+        ExportedTypeKind::Variant { variants } => {
+            for variant in variants {
+                if let Some(payload) = &variant.payload {
+                    validate_note_storage_type_ref(
+                        payload,
+                        span,
+                        &format!(
+                            "variant `{}` in type `{}`",
+                            variant.wit_name, definition.rust_name
+                        ),
+                    )?;
+                }
+            }
+        }
+    }
+    Ok(())
+}
+
+/// Checks one type reference against the supported note storage type surface.
+fn validate_note_storage_type_ref(
+    type_ref: &TypeRef,
+    span: Span,
+    context: &str,
+) -> Result<(), syn::Error> {
+    if type_ref.is_custom
+        || type_ref.is_sdk_core_record()
+        || matches!(type_ref.wit_name.as_str(), "u64" | "u32" | "u8" | "bool")
+    {
+        return Ok(());
+    }
+
+    if type_ref.path.last().is_some_and(|segment| segment == "Option") {
+        let [inner] = type_ref.dependencies.as_slice() else {
+            return Err(unsupported_note_storage_type(type_ref, span, context));
+        };
+        return validate_note_storage_type_ref(inner, span, context);
+    }
+
+    Err(unsupported_note_storage_type(type_ref, span, context))
+}
+
+/// Builds an actionable error for a type outside the note storage surface.
+fn unsupported_note_storage_type(type_ref: &TypeRef, span: Span, context: &str) -> syn::Error {
+    syn::Error::new(
+        span,
+        format!(
+            "`#[note]` storage {context} uses unsupported WIT type `{}`; supported types are \
+             {NOTE_STORAGE_SUPPORTED_TYPES}",
+            type_ref.wit_name,
+        ),
+    )
+}
+
+/// Resolves the generated WIT before it is embedded in the guest binary.
+fn validate_rendered_note_storage_schema(
+    rendered: &RenderedNoteStorageSchema,
+) -> Result<(), syn::Error> {
+    let mut resolve = Resolve::default();
+    resolve
+        .push_str(NOTE_STORAGE_SCHEMA_SOURCE_NAME, &rendered.source)
+        .map(|_| ())
+        .map_err(|error| {
+            let message = format!("{error:#}");
+            let (span, context) = rendered_schema_error_context(rendered, &message);
+            syn::Error::new(
+                span,
+                format!("failed to resolve note storage schema for {context}: {message}"),
+            )
+        })
+}
+
+/// Finds the Rust definition associated with a WIT parser diagnostic.
+fn rendered_schema_error_context(
+    rendered: &RenderedNoteStorageSchema,
+    error: &str,
+) -> (Span, String) {
+    let fallback = rendered
+        .definitions
+        .last()
+        .map(|definition| (rendered.span, format!("type `{}`", definition.rust_name)))
+        .unwrap_or_else(|| (Span::call_site(), "the `#[note]` storage type".to_string()));
+    let Some(error_line) = wit_error_line(error).and_then(|line| line.checked_sub(1)) else {
+        return fallback;
+    };
+    let Some(error_line) = rendered.source.lines().nth(error_line) else {
+        return fallback;
+    };
+    let error_line = error_line.trim();
+    for definition in &rendered.definitions {
+        let keyword = match &definition.kind {
+            ExportedTypeKind::Record { .. } => "record",
+            ExportedTypeKind::Variant { .. } => "variant",
+        };
+        let header = format!("{keyword} {} {{", definition.wit_name);
+        if error_line == header {
+            return (rendered.span, format!("type `{}`", definition.rust_name));
+        }
+        match &definition.kind {
+            ExportedTypeKind::Record { fields } => {
+                for field in fields {
+                    let field_prefix = format!("{}:", field.name.to_kebab_case());
+                    if error_line.starts_with(&field_prefix) {
+                        return (
+                            rendered.span,
+                            format!(
+                                "field `{}` of type `{}` in type `{}`",
+                                field.name, field.ty.wit_name, definition.rust_name
+                            ),
+                        );
+                    }
+                }
+            }
+            ExportedTypeKind::Variant { variants } => {
+                for variant in variants {
+                    if error_line.starts_with(&variant.wit_name) {
+                        let payload = variant
+                            .payload
+                            .as_ref()
+                            .map(|payload| format!(" with payload type `{}`", payload.wit_name))
+                            .unwrap_or_default();
+                        return (
+                            rendered.span,
+                            format!(
+                                "variant `{}`{payload} in type `{}`",
+                                variant.wit_name, definition.rust_name
+                            ),
+                        );
+                    }
+                }
+            }
+        }
+    }
+
+    fallback
+}
+
+/// Reads the one-based source line from a highlighted WIT parser diagnostic.
+fn wit_error_line(error: &str) -> Option<usize> {
+    let marker = format!("{NOTE_STORAGE_SCHEMA_SOURCE_NAME}:");
+    error.lines().find_map(|line| {
+        let (_, location) = line.split_once(&marker)?;
+        location.split(':').next()?.parse().ok()
+    })
+}
+
+/// Maps a Rust field type to WIT syntax with note-specific diagnostics.
+fn map_note_field_type(
+    ty: &Type,
+    registry: &HashMap<String, ExportedTypeDef>,
+    context: &str,
+) -> Result<TypeRef, syn::Error> {
+    if contains_vec(ty) {
+        return Err(syn::Error::new(
+            ty.span(),
+            "`Vec` is not supported in note storage schemas yet",
+        ));
+    }
+
+    map_type_to_type_ref(ty, registry).map_err(|err| {
+        syn::Error::new(
+            ty.span(),
+            format!(
+                "`#[note]` storage {context} is not supported: {err}; supported types are \
+                 {NOTE_STORAGE_SUPPORTED_TYPES}"
+            ),
+        )
+    })
+}
+
+/// Returns true when a path type names `Vec`, either directly or in an angle-bracketed
+/// type argument at any nesting depth.
+///
+/// The search looks through groups and parentheses. All other type forms, such as
+/// references, arrays, slices, tuples, and pointers, give false.
+fn contains_vec(ty: &Type) -> bool {
+    match ty {
+        Type::Group(group) => contains_vec(&group.elem),
+        Type::Paren(paren) => contains_vec(&paren.elem),
+        Type::Path(path) => path.path.segments.iter().any(|segment| {
+            if segment.ident == "Vec" {
+                return true;
+            }
+            let syn::PathArguments::AngleBracketed(arguments) = &segment.arguments else {
+                return false;
+            };
+            arguments.args.iter().any(
+                |argument| matches!(argument, syn::GenericArgument::Type(ty) if contains_vec(ty)),
+            )
+        }),
+        _ => false,
+    }
+}
+
+/// Returns the registry definitions reachable from the root, in registry order.
+fn referenced_custom_types(
+    root: &ExportedTypeDef,
+    registry: &[ExportedTypeDef],
+    span: proc_macro2::Span,
+) -> Result<Vec<ExportedTypeDef>, syn::Error> {
+    let by_wit_name = registry
+        .iter()
+        .map(|definition| (definition.wit_name.as_str(), definition))
+        .collect::<HashMap<_, _>>();
+    let mut referenced = HashSet::new();
+    visit_definition_types(root, &by_wit_name, &mut referenced, span)?;
+
+    Ok(registry
+        .iter()
+        .filter(|definition| referenced.contains(definition.wit_name.as_str()))
+        .cloned()
+        .collect())
+}
+
+/// Visits every type reference in an exported definition.
+fn visit_definition_types(
+    definition: &ExportedTypeDef,
+    registry: &HashMap<&str, &ExportedTypeDef>,
+    referenced: &mut HashSet<String>,
+    span: proc_macro2::Span,
+) -> Result<(), syn::Error> {
+    match &definition.kind {
+        ExportedTypeKind::Record { fields } => {
+            for field in fields {
+                visit_type_ref(&field.ty, registry, referenced, span)?;
+            }
+        }
+        ExportedTypeKind::Variant { variants } => {
+            for payload in variants.iter().filter_map(|variant| variant.payload.as_ref()) {
+                visit_type_ref(payload, registry, referenced, span)?;
+            }
+        }
+    }
+    Ok(())
+}
+
+/// Visits a type reference and its custom-type dependencies.
+fn visit_type_ref(
+    type_ref: &TypeRef,
+    registry: &HashMap<&str, &ExportedTypeDef>,
+    referenced: &mut HashSet<String>,
+    span: proc_macro2::Span,
+) -> Result<(), syn::Error> {
+    for dependency in &type_ref.dependencies {
+        visit_type_ref(dependency, registry, referenced, span)?;
+    }
+    if !type_ref.is_custom || referenced.contains(&type_ref.wit_name) {
+        return Ok(());
+    }
+
+    let definition = registry.get(type_ref.wit_name.as_str()).ok_or_else(|| {
+        let rust_name = type_ref.path.last().map(String::as_str).unwrap_or(&type_ref.wit_name);
+        syn::Error::new(
+            span,
+            format!(
+                "custom type `{rust_name}` in a note storage schema needs #[export_type] on its \
+                 definition before the #[note] struct"
+            ),
+        )
+    })?;
+    referenced.insert(type_ref.wit_name.clone());
+    visit_definition_types(definition, registry, referenced, span)
+}
+
+/// Returns the sorted SDK core types used by the rendered schema definitions.
+fn required_core_type_imports(
+    root: &ExportedTypeDef,
+    custom_types: &[ExportedTypeDef],
+) -> BTreeSet<String> {
+    let mut imports = BTreeSet::new();
+    add_definition_core_type_imports(root, &mut imports);
+    for definition in custom_types {
+        add_definition_core_type_imports(definition, &mut imports);
+    }
+    imports
+}
+
+/// Adds the SDK core types used by one definition to `imports`.
+fn add_definition_core_type_imports(definition: &ExportedTypeDef, imports: &mut BTreeSet<String>) {
+    match &definition.kind {
+        ExportedTypeKind::Record { fields } => {
+            for field in fields {
+                field.ty.add_required_core_type_imports(imports);
+            }
+        }
+        ExportedTypeKind::Variant { variants } => {
+            for payload in variants.iter().filter_map(|variant| variant.payload.as_ref()) {
+                payload.add_required_core_type_imports(imports);
+            }
+        }
+    }
+}
+
+/// Writes one record or variant definition to an interface body.
+fn render_type_definition(interface: &mut WitBody, definition: &ExportedTypeDef) {
+    render_docs(interface, &definition.docs);
+    match &definition.kind {
+        ExportedTypeKind::Record { fields } => {
+            interface.block(&format!("record {} {{", definition.wit_name), |record| {
+                for field in fields {
+                    render_docs(record, &field.docs);
+                    record.line(&format!("{}: {},", field.name.to_kebab_case(), field.ty.wit_name));
+                }
+            });
+        }
+        ExportedTypeKind::Variant { variants } => {
+            interface.block(&format!("variant {} {{", definition.wit_name), |variant_body| {
+                for variant in variants {
+                    render_docs(variant_body, &variant.docs);
+                    match &variant.payload {
+                        Some(payload) => variant_body
+                            .line(&format!("{}({}),", variant.wit_name, payload.wit_name)),
+                        None => variant_body.line(&format!("{},", variant.wit_name)),
+                    }
+                }
+            });
+        }
+    }
+}
+
+/// Writes Rust doc attribute text as WIT doc comments.
+fn render_docs(body: &mut WitBody, docs: &[String]) {
+    for doc in docs {
+        for line in doc.split('\n') {
+            let line = line.strip_suffix('\r').unwrap_or(line);
+            let line = line.strip_prefix(' ').unwrap_or(line);
+            if line.is_empty() {
+                body.line("///");
+            } else {
+                body.line(&format!("/// {line}"));
+            }
+        }
+    }
+}
+
+/// Appends `-schema` to a component package name before any version suffix.
+fn schema_package_name(component_package: &str) -> String {
+    match component_package.split_once('@') {
+        Some((name, version)) => format!("{name}-schema@{version}"),
+        None => format!("{component_package}-schema"),
+    }
+}
+
+/// Writes the embedded SDK `core-types` interface as a braced dependency package.
+fn render_core_types_package(wit: &mut WitBuilder) -> Result<(), syn::Error> {
+    let body = extract_interface_body(SDK_WIT_SOURCE, CORE_TYPES_INTERFACE).ok_or_else(|| {
+        syn::Error::new(
+            proc_macro2::Span::call_site(),
+            "failed to find the core-types interface in the embedded SDK WIT",
+        )
+    })?;
+    let body = body.strip_prefix('\n').unwrap_or(body);
+    let body = body.strip_suffix('\n').unwrap_or(body);
+
+    wit.package_block(CORE_TYPES_PACKAGE_NAME, &Version::new(1, 0, 0), |package| {
+        package.line("interface core-types {");
+        for line in body.split('\n') {
+            package.line(line);
+        }
+        package.line("}");
+    });
+    Ok(())
+}
+
+/// Extracts a brace-balanced interface body without changing its text.
+fn extract_interface_body<'a>(source: &'a str, interface_name: &str) -> Option<&'a str> {
+    let header = format!("interface {interface_name} {{");
+    let body_start = source.find(&header)? + header.len();
+    let mut depth = 1usize;
+    let body = &source[body_start..];
+    let bytes = body.as_bytes();
+    let mut offset = 0usize;
+    let mut in_line_comment = false;
+    let mut block_comment_depth = 0usize;
+    while offset < bytes.len() {
+        if in_line_comment {
+            if bytes[offset] == b'\n' {
+                in_line_comment = false;
+            }
+            offset += 1;
+            continue;
+        }
+        if block_comment_depth > 0 {
+            if bytes[offset..].starts_with(b"/*") {
+                block_comment_depth += 1;
+                offset += 2;
+            } else if bytes[offset..].starts_with(b"*/") {
+                block_comment_depth -= 1;
+                offset += 2;
+            } else {
+                offset += 1;
+            }
+            continue;
+        }
+        if bytes[offset..].starts_with(b"//") {
+            in_line_comment = true;
+            offset += 2;
+            continue;
+        }
+        if bytes[offset..].starts_with(b"/*") {
+            block_comment_depth = 1;
+            offset += 2;
+            continue;
+        }
+        match bytes[offset] {
+            b'{' => depth += 1,
+            b'}' => {
+                depth -= 1;
+                if depth == 0 {
+                    return Some(&source[body_start..body_start + offset]);
+                }
+            }
+            _ => {}
+        }
+        offset += 1;
+    }
+    None
+}
+
+#[cfg(test)]
+mod tests {
+    use midenc_expect_test::expect;
+    use syn::parse_quote;
+    use wit_bindgen_core::wit_parser::{Resolve, Type as WitType, TypeDefKind};
+
+    use super::*;
+    use crate::types::{
+        ExportedVariant, exported_type_from_struct, lock_export_type_registry_for_tests,
+        map_type_to_type_ref, reset_export_type_registry_for_tests,
+    };
+
+    /// Checks that the schema package contains the expected root alias.
+    fn assert_schema_root(source: &str, expected_root: &str) {
+        let mut resolve = Resolve::default();
+        let package_id =
+            resolve.push_str("note-schema.wit", source).expect("note schema must parse");
+        let package = &resolve.packages[package_id];
+        let interface_id = package.interfaces["note-storage"];
+        let interface = &resolve.interfaces[interface_id];
+        let storage_id = interface.types["storage"];
+        let TypeDefKind::Type(WitType::Id(root_id)) = resolve.types[storage_id].kind else {
+            panic!("storage must be a named type alias");
+        };
+        assert_eq!(resolve.types[root_id].name.as_deref(), Some(expected_root));
+    }
+
+    #[test]
+    fn extracts_nested_interface_body_verbatim() {
+        let source = "package test:a;\ninterface target {\n    record nested {\n        value: \
+                      u32,\n    }\n}\n";
+        assert_eq!(
+            extract_interface_body(source, "target"),
+            Some("\n    record nested {\n        value: u32,\n    }\n")
+        );
+        assert!(extract_interface_body(SDK_WIT_SOURCE, CORE_TYPES_INTERFACE).is_some());
+    }
+
+    #[test]
+    fn ignores_comment_braces_while_extracting_interface_body() {
+        let source =
+            "package test:a;\ninterface core-types {\n    /// A closing } before { opening \
+             brace.\n    /* Another } before { pair. */\n    record nested {\n        value: \
+             u32,\n    }\n}\n";
+        let source_without_braces = source.replace("} before {", "before");
+        let body = extract_interface_body(source, CORE_TYPES_INTERFACE).unwrap();
+        let body_without_braces =
+            extract_interface_body(&source_without_braces, CORE_TYPES_INTERFACE).unwrap();
+
+        assert_eq!(body.replace("} before {", "before"), body_without_braces);
+        assert!(body.contains("/// A closing } before { opening brace."));
+        assert!(body.contains("/* Another } before { pair. */"));
+    }
+
+    #[test]
+    fn uniqueness_guard_expansion_matches_golden() {
+        let tokens = note_storage_schema_uniqueness_guard().to_string();
+
+        expect![[r#"const _ : () = { # [doc (hidden)] # [used] # [unsafe (export_name = "__MIDEN_NOTE_STORAGE_SCHEMA_UNIQUENESS_GUARD")] static __miden_note_storage_schema_uniqueness_guard : u8 = 0 ; } ;"#]].assert_eq(&tokens);
+    }
+
+    #[test]
+    fn derives_macos_note_storage_schema_link_section() {
+        assert_eq!(macos_note_storage_schema_link_section(), "rodata,miden_note_schem");
+    }
+
+    #[test]
+    fn renders_p2id_shaped_schema() {
+        let _registry_guard = lock_export_type_registry_for_tests();
+        reset_export_type_registry_for_tests();
+        let note: ItemStruct = parse_quote! {
+            struct P2idNote {
+                target_account_id: AccountId,
+            }
+        };
+        let source = render_note_storage_schema(&note, "miden:p2id", &Version::new(0, 1, 0))
+            .expect("schema must render");
+
+        expect![[r#"
+            // This file is auto-generated by the `#[note]` macro.
+            // Do not edit this file manually.
+
+            package miden:p2id-schema@0.1.0;
+
+            use miden:base/core-types@1.0.0;
+
+            interface note-storage {
+                use core-types.{account-id};
+
+                record p2id-note {
+                    target-account-id: account-id,
+                }
+
+                type storage = p2id-note;
+            }
+
+            package miden:base@1.0.0 {
+                interface core-types {
+                    /// Represents an on-chain felt.
+                    ///
+                    /// Field modulus M = 2^64 - 2^32 + 1.
+                    record felt {
+                        /// The backing type is `f32` which will be treated as a felt by the compiler.
+                	/// We're basically hijacking the Wasm `f32` type and treat as felt.
+                        inner: f32,
+                    }
+
+
+                    /// A group of four field elements in the Miden base field.
+                    record word {
+                        a: felt,
+                	b: felt,
+                	c: felt,
+                	d: felt,
+                    }
+
+                    /// A cryptographic digest representing a 256-bit hash value.
+                    /// This is a wrapper around `word` which contains 4 field elements.
+                    record digest {
+                        inner: word
+                    }
+
+                    /// Unique identifier of an account.
+                    ///
+                    /// # Layout
+                    ///
+                    /// An `AccountId` consists of two field elements, where the first is called the prefix and the
+                    /// second is called the suffix. It is laid out as follows:
+                    ///
+                    /// prefix: [hash (56 bits) | storage mode (2 bits) | type (2 bits) | version (4 bits)]
+                    /// suffix: [zero bit | hash (55 bits) | 8 zero bits]
+                    record account-id {
+                    	prefix: felt,
+                	suffix: felt
+                    }
+
+                    /// Recipient of the note, i.e., hash(hash(hash(serial_num, [0; 4]), note_script_hash), input_hash)
+                    record recipient {
+                        inner: word
+                    }
+
+                    record tag {
+                        inner: felt
+                    }
+
+                    /// A fungible or a non-fungible asset.
+                    ///
+                    /// In protocol v0.14 assets are encoded as two words: an asset key and an asset value.
+                    ///
+                    /// The methodology for constructing fungible and non-fungible assets is described below.
+                    ///
+                    /// # Fungible assets
+                    /// - `key`: `[0, 0, faucet_id_suffix, faucet_id_prefix]`
+                    /// - `value`: `[amount, 0, 0, 0]`
+                    ///
+                    /// # Non-fungible assets
+                    /// - `key`: `[hash0, hash1, faucet_id_suffix, faucet_id_prefix]`
+                    /// - `value`: `DATA_HASH`
+                    record asset {
+                        key: word,
+                        value: word,
+                    }
+
+                    /// A validated fungible asset amount, at most 2^63 - 2^31.
+                    record asset-amount {
+                        inner: felt
+                    }
+
+                    /// Account nonce
+                    record nonce {
+                        inner: felt
+                    }
+
+                    /// A block height in the chain
+                    record block-number {
+                        inner: felt
+                    }
+
+                    /// Account hash
+                    record account-hash {
+                        inner: word
+                    }
+
+                    /// Block hash
+                    record block-hash {
+                        inner: word
+                    }
+
+                    /// Storage value
+                    record storage-value {
+                        inner: word
+                    }
+
+                    /// Account storage root
+                    record storage-root {
+                        inner: word
+                    }
+
+                    /// Account code root
+                    record account-code-root {
+                        inner: word
+                    }
+
+                    /// Commitment to the account vault
+                    record vault-commitment {
+                        inner: word
+                    }
+
+                    /// An index of the created note
+                    record note-idx {
+                        inner: felt
+                    }
+
+                    record note-type {
+                        inner: felt
+                    }
+
+                    record note-execution-hint {
+                        inner: felt
+                    }
+
+                }
+            }
+        "#]].assert_eq(&source);
+        assert_schema_root(&source, "p2id-note");
+    }
+
+    #[test]
+    fn renders_nested_record_and_enum_schema() {
+        let _registry_guard = lock_export_type_registry_for_tests();
+        reset_export_type_registry_for_tests();
+        let destination: syn::ItemStruct = parse_quote! {
+            /// Destination details.
+            struct Destination {
+                /// Destination account.
+                account_id: AccountId,
+            }
+        };
+        let route: syn::ItemEnum = parse_quote! {
+            /// Route selection.
+            enum Route {
+                /// Send directly.
+                Direct,
+                /// Send through a destination.
+                Via(Destination),
+            }
+        };
+        let destination = exported_type_from_struct(&destination).expect("record must map");
+        let destination_type: Type = parse_quote!(Destination);
+        let route_payload = map_type_to_type_ref(
+            &destination_type,
+            &HashMap::from([(destination.rust_name.clone(), destination.clone())]),
+        )
+        .expect("enum payload must map");
+        let route = ExportedTypeDef {
+            docs: doc_comments(&route.attrs),
+            rust_name: route.ident.to_string(),
+            wit_name: route.ident.to_string().to_kebab_case(),
+            kind: ExportedTypeKind::Variant {
+                variants: vec![
+                    ExportedVariant {
+                        docs: doc_comments(&route.variants[0].attrs),
+                        wit_name: "direct".into(),
+                        payload: None,
+                    },
+                    ExportedVariant {
+                        docs: doc_comments(&route.variants[1].attrs),
+                        wit_name: "via".into(),
+                        payload: Some(route_payload),
+                    },
+                ],
+            },
+        };
+        let note: ItemStruct = parse_quote! {
+            /// A routed note.
+            struct RoutedNote {
+                /// Selected route.
+                route: Route,
+            }
+        };
+        let source = render_note_storage_schema_with_registry(
+            &note,
+            "miden:routed-note",
+            &Version::new(2, 3, 4),
+            &[destination, route],
+        )
+        .expect("schema must render");
+
+        expect![[r#"
+            // This file is auto-generated by the `#[note]` macro.
+            // Do not edit this file manually.
+
+            package miden:routed-note-schema@2.3.4;
+
+            use miden:base/core-types@1.0.0;
+
+            interface note-storage {
+                use core-types.{account-id};
+
+                /// Destination details.
+                record destination {
+                    /// Destination account.
+                    account-id: account-id,
+                }
+
+                /// Route selection.
+                variant route {
+                    /// Send directly.
+                    direct,
+                    /// Send through a destination.
+                    via(destination),
+                }
+
+                /// A routed note.
+                record routed-note {
+                    /// Selected route.
+                    route: route,
+                }
+
+                type storage = routed-note;
+            }
+
+            package miden:base@1.0.0 {
+                interface core-types {
+                    /// Represents an on-chain felt.
+                    ///
+                    /// Field modulus M = 2^64 - 2^32 + 1.
+                    record felt {
+                        /// The backing type is `f32` which will be treated as a felt by the compiler.
+                	/// We're basically hijacking the Wasm `f32` type and treat as felt.
+                        inner: f32,
+                    }
+
+
+                    /// A group of four field elements in the Miden base field.
+                    record word {
+                        a: felt,
+                	b: felt,
+                	c: felt,
+                	d: felt,
+                    }
+
+                    /// A cryptographic digest representing a 256-bit hash value.
+                    /// This is a wrapper around `word` which contains 4 field elements.
+                    record digest {
+                        inner: word
+                    }
+
+                    /// Unique identifier of an account.
+                    ///
+                    /// # Layout
+                    ///
+                    /// An `AccountId` consists of two field elements, where the first is called the prefix and the
+                    /// second is called the suffix. It is laid out as follows:
+                    ///
+                    /// prefix: [hash (56 bits) | storage mode (2 bits) | type (2 bits) | version (4 bits)]
+                    /// suffix: [zero bit | hash (55 bits) | 8 zero bits]
+                    record account-id {
+                    	prefix: felt,
+                	suffix: felt
+                    }
+
+                    /// Recipient of the note, i.e., hash(hash(hash(serial_num, [0; 4]), note_script_hash), input_hash)
+                    record recipient {
+                        inner: word
+                    }
+
+                    record tag {
+                        inner: felt
+                    }
+
+                    /// A fungible or a non-fungible asset.
+                    ///
+                    /// In protocol v0.14 assets are encoded as two words: an asset key and an asset value.
+                    ///
+                    /// The methodology for constructing fungible and non-fungible assets is described below.
+                    ///
+                    /// # Fungible assets
+                    /// - `key`: `[0, 0, faucet_id_suffix, faucet_id_prefix]`
+                    /// - `value`: `[amount, 0, 0, 0]`
+                    ///
+                    /// # Non-fungible assets
+                    /// - `key`: `[hash0, hash1, faucet_id_suffix, faucet_id_prefix]`
+                    /// - `value`: `DATA_HASH`
+                    record asset {
+                        key: word,
+                        value: word,
+                    }
+
+                    /// A validated fungible asset amount, at most 2^63 - 2^31.
+                    record asset-amount {
+                        inner: felt
+                    }
+
+                    /// Account nonce
+                    record nonce {
+                        inner: felt
+                    }
+
+                    /// A block height in the chain
+                    record block-number {
+                        inner: felt
+                    }
+
+                    /// Account hash
+                    record account-hash {
+                        inner: word
+                    }
+
+                    /// Block hash
+                    record block-hash {
+                        inner: word
+                    }
+
+                    /// Storage value
+                    record storage-value {
+                        inner: word
+                    }
+
+                    /// Account storage root
+                    record storage-root {
+                        inner: word
+                    }
+
+                    /// Account code root
+                    record account-code-root {
+                        inner: word
+                    }
+
+                    /// Commitment to the account vault
+                    record vault-commitment {
+                        inner: word
+                    }
+
+                    /// An index of the created note
+                    record note-idx {
+                        inner: felt
+                    }
+
+                    record note-type {
+                        inner: felt
+                    }
+
+                    record note-execution-hint {
+                        inner: felt
+                    }
+
+                }
+            }
+        "#]].assert_eq(&source);
+        assert_schema_root(&source, "routed-note");
+    }
+
+    #[test]
+    fn renders_multiline_doc_attributes_as_separate_wit_comments() {
+        let _registry_guard = lock_export_type_registry_for_tests();
+        reset_export_type_registry_for_tests();
+        let note: ItemStruct = parse_quote! {
+            #[doc = " First note line.\n Second note line."]
+            struct DocumentedNote {
+                #[doc = " First field line.\n Second field line."]
+                value: u64,
+            }
+        };
+        let source =
+            render_note_storage_schema(&note, "miden:documented-note", &Version::new(1, 0, 0))
+                .expect("multiline docs must render");
+
+        assert!(source.contains("/// First note line.\n    /// Second note line."));
+        assert!(source.contains("/// First field line.\n        /// Second field line."));
+        assert_schema_root(&source, "documented-note");
+    }
+
+    #[test]
+    fn rejects_signed_integer_storage_fields() {
+        for (rust_type, wit_type) in [("i8", "s8"), ("i16", "s16"), ("i32", "s32"), ("i64", "s64")]
+        {
+            assert_unsupported_note_field_type(rust_type, wit_type);
+        }
+    }
+
+    #[test]
+    fn rejects_u16_storage_fields() {
+        assert_unsupported_note_field_type("u16", "u16");
+    }
+
+    #[test]
+    fn rejects_result_storage_fields() {
+        assert_unsupported_note_field_type("Result<u64, u32>", "result<u64, u32>");
+    }
+
+    #[test]
+    fn rejects_other_types_outside_the_storage_allow_list() {
+        let _registry_guard = lock_export_type_registry_for_tests();
+        reset_export_type_registry_for_tests();
+        let note: ItemStruct = parse_quote! {
+            struct FloatNote {
+                value: f32,
+            }
+        };
+        let err = render_note_storage_schema_with_registry(
+            &note,
+            "miden:float-note",
+            &Version::new(1, 0, 0),
+            &[],
+        )
+        .expect_err("types outside the note storage surface must fail");
+
+        let message = err.to_string();
+        assert!(message.contains("field `value` in type `FloatNote`"));
+        assert!(message.contains("`f32` is not supported"));
+        assert!(message.contains("supported types are"));
+    }
+
+    #[test]
+    fn rejects_unsupported_types_nested_in_options() {
+        assert_unsupported_note_field_type("Option<i16>", "s16");
+    }
+
+    #[test]
+    fn rejects_unsupported_fields_in_nested_records() {
+        let _registry_guard = lock_export_type_registry_for_tests();
+        reset_export_type_registry_for_tests();
+        let nested: syn::ItemStruct = parse_quote! {
+            struct Nested {
+                count: u16,
+            }
+        };
+        let nested = exported_type_from_struct(&nested).expect("record must map");
+        let note: ItemStruct = parse_quote! {
+            struct NestedNote {
+                nested: Nested,
+            }
+        };
+        let err = render_note_storage_schema_with_registry(
+            &note,
+            "miden:nested-note",
+            &Version::new(1, 0, 0),
+            &[nested],
+        )
+        .expect_err("unsupported nested fields must fail");
+
+        let message = err.to_string();
+        assert!(message.contains("field `count` in type `Nested`"));
+        assert!(message.contains("unsupported WIT type `u16`"));
+    }
+
+    #[test]
+    fn expansion_surfaces_wit_parser_errors_with_type_context() {
+        let _registry_guard = lock_export_type_registry_for_tests();
+        reset_export_type_registry_for_tests();
+        let note: ItemStruct = parse_quote! {
+            struct Type {
+                value: u64,
+            }
+        };
+        let err = expand_note_storage_schema(&note)
+            .expect_err("a WIT keyword cannot be used as a record name");
+
+        let message = err.to_string();
+        assert!(message.contains("failed to resolve note storage schema"));
+        assert!(message.contains("type `Type`"));
+    }
+
+    #[test]
+    fn expansion_surfaces_wit_parser_errors_with_field_context() {
+        let _registry_guard = lock_export_type_registry_for_tests();
+        reset_export_type_registry_for_tests();
+        let note: ItemStruct = parse_quote! {
+            struct InvalidFieldNote {
+                type_: u64,
+            }
+        };
+        let err = expand_note_storage_schema(&note)
+            .expect_err("a WIT keyword cannot be used as a field name");
+
+        let message = err.to_string();
+        assert!(message.contains("failed to resolve note storage schema"));
+        assert!(message.contains("field `type_` of type `u64`"));
+    }
+
+    #[test]
+    fn rejects_tuple_note_structs() {
+        let _registry_guard = lock_export_type_registry_for_tests();
+        reset_export_type_registry_for_tests();
+        let note: ItemStruct = parse_quote!(
+            struct TupleNote(Felt);
+        );
+        let err = render_note_storage_schema(&note, "miden:tuple-note", &Version::new(1, 0, 0))
+            .expect_err("tuple notes must fail");
+
+        assert_eq!(err.to_string(), NOTE_NAMED_FIELDS_ERROR);
+    }
+
+    #[test]
+    fn rejects_vec_fields() {
+        let _registry_guard = lock_export_type_registry_for_tests();
+        reset_export_type_registry_for_tests();
+        let note: ItemStruct = parse_quote! {
+            struct VecNote {
+                values: Vec<Felt>,
+            }
+        };
+        let err = render_note_storage_schema(&note, "miden:vec-note", &Version::new(1, 0, 0))
+            .expect_err("Vec fields must fail");
+
+        assert_eq!(err.to_string(), "`Vec` is not supported in note storage schemas yet");
+    }
+
+    #[test]
+    fn rejects_custom_types_registered_after_the_note() {
+        let _registry_guard = lock_export_type_registry_for_tests();
+        reset_export_type_registry_for_tests();
+        let note: ItemStruct = parse_quote! {
+            struct CustomNote {
+                value: MissingType,
+            }
+        };
+        let err = render_note_storage_schema(&note, "miden:custom-note", &Version::new(1, 0, 0))
+            .expect_err("unregistered custom types must fail");
+
+        let message = err.to_string();
+        assert!(message.contains("#[export_type]"));
+        assert!(message.contains("before the #[note] struct"));
+    }
+
+    /// Checks one Rust field type against the note-specific allow-list diagnostic.
+    fn assert_unsupported_note_field_type(rust_type: &str, expected_wit_type: &str) {
+        let _registry_guard = lock_export_type_registry_for_tests();
+        reset_export_type_registry_for_tests();
+        let note: ItemStruct =
+            syn::parse_str(&format!("struct UnsupportedNote {{ value: {rust_type}, }}"))
+                .expect("test note must parse");
+        let err = render_note_storage_schema_with_registry(
+            &note,
+            "miden:unsupported-note",
+            &Version::new(1, 0, 0),
+            &[],
+        )
+        .expect_err("unsupported note field must fail");
+
+        let message = err.to_string();
+        assert!(message.contains("field `value` in type `UnsupportedNote`"));
+        assert!(message.contains(&format!("unsupported WIT type `{expected_wit_type}`")));
+        assert!(message.contains("supported types are"));
+    }
+}
diff --git a/sdk/base-macros/src/test_support.rs b/sdk/base-macros/src/test_support.rs
index 3aa27cacfa..904959ba46 100644
--- a/sdk/base-macros/src/test_support.rs
+++ b/sdk/base-macros/src/test_support.rs
@@ -1,6 +1,12 @@
 //! Shared fixtures for base-macros unit tests.
 
-use std::{fs, path::Path, sync::Arc};
+use std::{
+    env, fs,
+    io::Write,
+    path::Path,
+    process::{Command, Output, Stdio},
+    sync::Arc,
+};
 
 use miden_assembly::{Assembler, DefaultSourceManager, ModuleParser, ast::ModuleKind};
 use miden_mast_package::Package;
@@ -38,3 +44,29 @@ pub(crate) fn write_masp_fixture(package_path: &Path, package_id: &str, wit: Opt
         .expect("package directory must be created");
     fs::write(package_path, package.to_bytes()).expect("package fixture must be written");
 }
+
+/// Compiles one standalone Rust source string and returns the rustc result.
+///
+/// The source is compiled to metadata only, so a test can assert on the diagnostics that a macro
+/// expansion produces in a real compilation.
+pub(crate) fn compile_rust_source(source: &str) -> Output {
+    let output_dir = tempfile::tempdir().expect("failed to create rustc output directory");
+    let output_path = output_dir.path().join("macro_expansion.rmeta");
+    let rustc = env::var_os("RUSTC").unwrap_or_else(|| "rustc".into());
+    let mut child = Command::new(rustc)
+        .args(["--crate-name", "macro_expansion", "--edition=2024", "--emit=metadata", "-o"])
+        .arg(output_path)
+        .arg("-")
+        .stdin(Stdio::piped())
+        .stdout(Stdio::piped())
+        .stderr(Stdio::piped())
+        .spawn()
+        .expect("failed to start rustc for a macro expansion test");
+    child
+        .stdin
+        .take()
+        .expect("rustc stdin must be piped")
+        .write_all(source.as_bytes())
+        .expect("failed to write the macro expansion source");
+    child.wait_with_output().expect("failed to wait for rustc")
+}
diff --git a/sdk/base-macros/src/types.rs b/sdk/base-macros/src/types.rs
index 3739f6f669..e05b3bfb6d 100644
--- a/sdk/base-macros/src/types.rs
+++ b/sdk/base-macros/src/types.rs
@@ -1,22 +1,34 @@
+//! Rust-to-WIT type mapping and per-crate export registration.
+
 use std::{
     collections::{HashMap, HashSet},
     sync::{Mutex, OnceLock},
 };
 
-static EXPORTED_TYPES: OnceLock<Mutex<Vec<ExportedTypeDef>>> = OnceLock::new();
-
-use heck::ToKebabCase;
-use proc_macro2::Span;
-use syn::{ItemStruct, Type, spanned::Spanned};
+use heck::{ToKebabCase, ToUpperCamelCase};
+use proc_macro2::{Span, TokenStream};
+use quote::quote_spanned;
+use syn::{Attribute, ItemStruct, Type, spanned::Spanned};
 use wit_bindgen_core::wit_parser::Type as WitType;
 
 use crate::manifest_paths::SDK_WIT_SOURCE;
 
+/// Exported types grouped by the crate currently being expanded.
+static EXPORTED_TYPES: OnceLock<Mutex<HashMap<String, Vec<RegisteredExportType>>>> =
+    OnceLock::new();
+
+/// Guard that serializes tests which share the process-wide exported-type registry.
+#[cfg(test)]
+static EXPORTED_TYPES_TEST_LOCK: Mutex<()> = Mutex::new(());
+
+/// One Rust type as it was written at the expansion site, with its WIT identity.
 #[derive(Clone, Debug)]
 pub(crate) struct TypeRef {
     pub(crate) wit_name: String,
     pub(crate) is_custom: bool,
     pub(crate) path: Vec<String>,
+    /// True when the written path starts with `::`.
+    pub(crate) leading_colon: bool,
     pub(crate) dependencies: Vec<TypeRef>,
 }
 
@@ -35,16 +47,23 @@ impl TypeRef {
             dependency.add_required_core_type_imports(imports);
         }
     }
+
+    /// Returns true when this type is an SDK core-type record.
+    pub(crate) fn is_sdk_core_record(&self) -> bool {
+        !self.is_custom && sdk_core_record_names().contains(&self.wit_name)
+    }
 }
 
 #[derive(Clone, Debug)]
 pub(crate) struct ExportedField {
+    pub(crate) docs: Vec<String>,
     pub(crate) name: String,
     pub(crate) ty: TypeRef,
 }
 
 #[derive(Clone, Debug)]
 pub(crate) struct ExportedVariant {
+    pub(crate) docs: Vec<String>,
     pub(crate) wit_name: String,
     pub(crate) payload: Option<TypeRef>,
 }
@@ -57,11 +76,34 @@ pub(crate) enum ExportedTypeKind {
 
 #[derive(Clone, Debug)]
 pub(crate) struct ExportedTypeDef {
+    pub(crate) docs: Vec<String>,
     pub(crate) rust_name: String,
     pub(crate) wit_name: String,
     pub(crate) kind: ExportedTypeKind,
 }
 
+/// Returns the text stored in `#[doc = "..."]` attributes.
+pub(crate) fn doc_comments(attrs: &[Attribute]) -> Vec<String> {
+    attrs
+        .iter()
+        .filter_map(|attr| {
+            if !attr.path().is_ident("doc") {
+                return None;
+            }
+            let syn::Meta::NameValue(meta) = &attr.meta else {
+                return None;
+            };
+            let syn::Expr::Lit(expr) = &meta.value else {
+                return None;
+            };
+            let syn::Lit::Str(value) = &expr.lit else {
+                return None;
+            };
+            Some(value.value())
+        })
+        .collect()
+}
+
 /// Represents the types that can be used as storage fields.
 ///
 /// During macro expansion struct field types correspond to strings, as types haven't been
@@ -72,20 +114,460 @@ pub(crate) enum StorageFieldType {
     StorageValue,
 }
 
-pub(crate) fn register_export_type(def: ExportedTypeDef, _span: Span) -> Result<(), syn::Error> {
-    let registry = EXPORTED_TYPES.get_or_init(|| Mutex::new(Vec::new()));
+/// One exported-type registration together with the source location that produced it.
+#[derive(Clone, Debug)]
+struct RegisteredExportType {
+    def: ExportedTypeDef,
+    location: ExpansionLocation,
+}
+
+/// Source location of one macro expansion.
+///
+/// The location tells a stale re-expansion of an edited item (same location) from a real
+/// conflict between two items (different locations).
+// Keep this registry identity/replacement policy aligned with
+// sdk/note-codec/macros/src/registry.rs; changes must land in both.
+type ExpansionLocation = (String, usize, usize);
+
+/// Returns the (file, line, column) location of one expansion span.
+fn expansion_location(span: Span) -> ExpansionLocation {
+    let start = span.start();
+    (span.file(), start.line, start.column)
+}
+
+/// Returns the key of the crate whose macro expansion is running.
+///
+/// Long-lived macro hosts such as the rust-analyzer proc-macro server expand many crates in
+/// one process; the key keeps their registrations apart.
+fn macro_invocation_crate_key() -> String {
+    std::env::var("CARGO_MANIFEST_DIR")
+        .or_else(|_| std::env::var("CARGO_PKG_NAME"))
+        .unwrap_or_default()
+}
+
+/// Registers one exported type while preserving the first definition seen by the macro process.
+pub(crate) fn register_export_type(def: ExportedTypeDef, span: Span) -> Result<(), syn::Error> {
+    let registry = EXPORTED_TYPES.get_or_init(|| Mutex::new(HashMap::new()));
     let mut registry = registry.lock().expect("mutex poisoned");
-    if let Some(existing) = registry.iter_mut().find(|existing| existing.wit_name == def.wit_name) {
-        *existing = def;
+    let entries = registry.entry(macro_invocation_crate_key()).or_default();
+    register_export_type_in(entries, def, span, expansion_location(span))
+}
+
+/// Applies exported-type identity rules to one registry snapshot.
+fn register_export_type_in(
+    registry: &mut Vec<RegisteredExportType>,
+    def: ExportedTypeDef,
+    span: Span,
+    location: ExpansionLocation,
+) -> Result<(), syn::Error> {
+    if let Some(existing) =
+        registry.iter_mut().find(|existing| existing.def.wit_name == def.wit_name)
+    {
+        if existing.location == location {
+            if existing.def.rust_name == def.rust_name
+                && exported_type_shapes_match(&existing.def, &def)
+            {
+                // rust-analyzer can expand the same attribute more than once in one process.
+                return Ok(());
+            }
+            // A long-lived macro host re-expanded an edited item; replace the stale shape.
+            existing.def = def;
+            return Ok(());
+        }
+        // Two different items that map to one WIT name are ambiguous even with equal
+        // shapes: a note field referring to the shared name cannot say which one it means.
+
+        let identity = if existing.def.rust_name == def.rust_name {
+            format!("Rust type `{}`", def.rust_name)
+        } else {
+            format!("Rust types `{}` and `{}` both map to", existing.def.rust_name, def.rust_name)
+        };
+        return Err(syn::Error::new(
+            span,
+            format!(
+                "conflicting #[export_type] registration: {identity} WIT type `{}` with different \
+                 identity or shape; the earlier registration is `{}`, while this registration is \
+                 `{}`. Rename one type or make both registrations structurally identical. If this \
+                 error appears in your IDE after an edit, restart the rust-analyzer proc-macro \
+                 server",
+                def.wit_name,
+                describe_exported_type_shape(&existing.def),
+                describe_exported_type_shape(&def),
+            ),
+        ));
+    }
+    registry.push(RegisteredExportType { def, location });
+    Ok(())
+}
+
+/// Returns true when two definitions render the same structural WIT type.
+fn exported_type_shapes_match(left: &ExportedTypeDef, right: &ExportedTypeDef) -> bool {
+    match (&left.kind, &right.kind) {
+        (
+            ExportedTypeKind::Record {
+                fields: left_fields,
+            },
+            ExportedTypeKind::Record {
+                fields: right_fields,
+            },
+        ) => {
+            left_fields.len() == right_fields.len()
+                && left_fields.iter().zip(right_fields).all(|(left, right)| {
+                    left.name.to_kebab_case() == right.name.to_kebab_case()
+                        && type_ref_shapes_match(&left.ty, &right.ty)
+                })
+        }
+        (
+            ExportedTypeKind::Variant {
+                variants: left_variants,
+            },
+            ExportedTypeKind::Variant {
+                variants: right_variants,
+            },
+        ) => {
+            left_variants.len() == right_variants.len()
+                && left_variants.iter().zip(right_variants).all(|(left, right)| {
+                    left.wit_name == right.wit_name
+                        && match (&left.payload, &right.payload) {
+                            (Some(left), Some(right)) => type_ref_shapes_match(left, right),
+                            (None, None) => true,
+                            _ => false,
+                        }
+                })
+        }
+        _ => false,
+    }
+}
+
+/// Returns true when two references resolve to the same WIT identity and generic shape.
+fn type_ref_shapes_match(left: &TypeRef, right: &TypeRef) -> bool {
+    left.wit_name == right.wit_name
+        && left.is_custom == right.is_custom
+        && left.dependencies.len() == right.dependencies.len()
+        && left
+            .dependencies
+            .iter()
+            .zip(&right.dependencies)
+            .all(|(left, right)| type_ref_shapes_match(left, right))
+}
+
+/// Formats the canonical structural shape of one exported definition.
+///
+/// The text serves conflict diagnostics and the compile-time shape checks that pin a written
+/// type to its `#[export_type]` registration, so it must stay stable and structural.
+pub(crate) fn describe_exported_type_shape(def: &ExportedTypeDef) -> String {
+    match &def.kind {
+        ExportedTypeKind::Record { fields } => format!(
+            "record {} {{ {} }}",
+            def.wit_name,
+            fields
+                .iter()
+                .map(|field| format!("{}: {}", field.name.to_kebab_case(), field.ty.wit_name))
+                .collect::<Vec<_>>()
+                .join(", ")
+        ),
+        ExportedTypeKind::Variant { variants } => format!(
+            "variant {} {{ {} }}",
+            def.wit_name,
+            variants
+                .iter()
+                .map(|variant| match &variant.payload {
+                    Some(payload) => format!("{}({})", variant.wit_name, payload.wit_name),
+                    None => variant.wit_name.clone(),
+                })
+                .collect::<Vec<_>>()
+                .join(", ")
+        ),
+    }
+}
+
+/// Emits nominal identity checks for names the classifier trusts without resolution.
+///
+/// Procedural macros cannot resolve identifiers. Two classes of names are pinned:
+/// SDK core-type names (a genuine `miden::Word` import passes, a local same-named type
+/// fails unless registered with `#[export_type]`), and the builtin names `Option`,
+/// `Result`, and the primitives (proven to BE the `::core` definitions). Both checks stop
+/// the emitted WIT shape from drifting from the encoded Rust type.
+pub(crate) fn nominal_type_identity_guards(
+    definition: &ExportedTypeDef,
+    span: Span,
+) -> Result<TokenStream, syn::Error> {
+    let mut guarded = HashSet::new();
+    let mut guards = TokenStream::new();
+    visit_exported_type_refs(definition, &mut |type_ref| {
+        collect_sdk_core_type_identity_guard(type_ref, span, &mut guarded, &mut guards)?;
+        collect_builtin_type_identity_guard(type_ref, span, &mut guarded, &mut guards)
+    })?;
+    Ok(guards)
+}
+
+/// Appends one nominal builtin identity check when a builtin-named reference is not guarded.
+///
+/// `Option`, `Result`, and the primitive names are classified by their last path segment, so
+/// a same-named foreign or shadowing type could silently change the encoded layout. The check
+/// proves the written type IS the `::core` builtin, mirroring the SDK core-type guard.
+fn collect_builtin_type_identity_guard(
+    type_ref: &TypeRef,
+    span: Span,
+    guarded: &mut HashSet<(String, String)>,
+    guards: &mut TokenStream,
+) -> Result<(), syn::Error> {
+    let Some(canonical) = builtin_canonical_type_text(type_ref) else {
+        return Ok(());
+    };
+    let written = written_type_text(type_ref);
+    if !guarded.insert((written.clone(), canonical.clone())) {
         return Ok(());
     }
-    registry.push(def);
+    let written = parse_reconstructed_type(&written, span)?;
+    let canonical = parse_reconstructed_type(&canonical, span)?;
+    guards.extend(quote_spanned! {span=>
+        const _: fn() = || {
+            fn __miden_builtin_type_name_collision_use_the_core_type<T>(
+                _: ::core::marker::PhantomData<T>,
+                _: ::core::marker::PhantomData<T>,
+            ) {}
+            __miden_builtin_type_name_collision_use_the_core_type(
+                ::core::marker::PhantomData::<#written>,
+                ::core::marker::PhantomData::<#canonical>,
+            );
+        };
+    });
+    Ok(())
+}
+
+/// Returns the `::core` spelling of a builtin-named reference, or None for other types.
+fn builtin_canonical_type_text(type_ref: &TypeRef) -> Option<String> {
+    if type_ref.is_custom {
+        return None;
+    }
+    let last = type_ref.path.last()?;
+    match (last.as_str(), type_ref.dependencies.as_slice()) {
+        ("Option", [inner]) => {
+            Some(format!("::core::option::Option<{}>", written_type_text(inner)))
+        }
+        ("Result", [ok, err]) => Some(format!(
+            "::core::result::Result<{}, {}>",
+            written_type_text(ok),
+            written_type_text(err)
+        )),
+        (ident, []) if rust_type_to_wit_type(ident).is_some() => {
+            Some(format!("::core::primitive::{ident}"))
+        }
+        _ => None,
+    }
+}
+
+/// Reconstructs the Rust source text of a reference as it was written.
+fn written_type_text(type_ref: &TypeRef) -> String {
+    // The unit type is recorded with an empty path (see the tuple arm of
+    // `map_type_to_type_ref`); render it as `()` so reconstructed generics parse.
+    if type_ref.path.is_empty() {
+        return "()".to_string();
+    }
+    let path = written_path(type_ref);
+    match (type_ref.path.last().map(String::as_str), type_ref.dependencies.as_slice()) {
+        (Some("Option"), [inner]) => format!("{path}<{}>", written_type_text(inner)),
+        (Some("Result"), [ok, err]) => {
+            format!("{path}<{}, {}>", written_type_text(ok), written_type_text(err))
+        }
+        _ => path,
+    }
+}
+
+/// Returns the path of a reference as it was written, keeping any leading `::`.
+fn written_path(type_ref: &TypeRef) -> String {
+    let path = type_ref.path.join("::");
+    if type_ref.leading_colon {
+        format!("::{path}")
+    } else {
+        path
+    }
+}
+
+/// Parses one reconstructed type text back into a type for guard emission.
+fn parse_reconstructed_type(text: &str, span: Span) -> Result<syn::Type, syn::Error> {
+    syn::parse_str::<syn::Type>(text).map_err(|error| {
+        syn::Error::new(
+            span,
+            format!("failed to reconstruct type `{text}` for an identity check: {error}"),
+        )
+    })
+}
+
+/// Visits every type reference contained in one exported definition.
+fn visit_exported_type_refs(
+    definition: &ExportedTypeDef,
+    visitor: &mut impl FnMut(&TypeRef) -> Result<(), syn::Error>,
+) -> Result<(), syn::Error> {
+    match &definition.kind {
+        ExportedTypeKind::Record { fields } => {
+            for field in fields {
+                visit_type_ref_dependencies(&field.ty, visitor)?;
+            }
+        }
+        ExportedTypeKind::Variant { variants } => {
+            for payload in variants.iter().filter_map(|variant| variant.payload.as_ref()) {
+                visit_type_ref_dependencies(payload, visitor)?;
+            }
+        }
+    }
+    Ok(())
+}
+
+/// Visits one type reference and every nested generic dependency.
+fn visit_type_ref_dependencies(
+    type_ref: &TypeRef,
+    visitor: &mut impl FnMut(&TypeRef) -> Result<(), syn::Error>,
+) -> Result<(), syn::Error> {
+    visitor(type_ref)?;
+    for dependency in &type_ref.dependencies {
+        visit_type_ref_dependencies(dependency, visitor)?;
+    }
+    Ok(())
+}
+
+/// Appends one nominal SDK identity check when a core-type path has not already been guarded.
+fn collect_sdk_core_type_identity_guard(
+    type_ref: &TypeRef,
+    span: Span,
+    guarded: &mut HashSet<(String, String)>,
+    guards: &mut TokenStream,
+) -> Result<(), syn::Error> {
+    if !type_ref.requires_core_type_import() {
+        return Ok(());
+    }
+
+    let rust_path = written_path(type_ref);
+    if !guarded.insert((rust_path.clone(), type_ref.wit_name.clone())) {
+        return Ok(());
+    }
+    let rust_path = syn::parse_str::<syn::Path>(&rust_path).map_err(|error| {
+        syn::Error::new(
+            span,
+            format!("failed to reconstruct SDK core-type path for an identity check: {error}"),
+        )
+    })?;
+    let sdk_ident = syn::Ident::new(&type_ref.wit_name.to_upper_camel_case(), span);
+    guards.extend(quote_spanned! {span=>
+        const _: fn() = || {
+            fn __miden_core_type_name_collision_use_sdk_type_or_add_export_type<T>(
+                _: ::core::marker::PhantomData<T>,
+                _: ::core::marker::PhantomData<T>,
+            ) {}
+            __miden_core_type_name_collision_use_sdk_type_or_add_export_type(
+                ::core::marker::PhantomData::<#rust_path>,
+                ::core::marker::PhantomData::<::miden::#sdk_ident>,
+            );
+        };
+    });
+    Ok(())
+}
+
+/// Emits the hidden constant that records the structural shape of an exported type.
+///
+/// Compile-time checks read this constant through a written type path, so a type that only
+/// shares the registered name cannot pass for the registered type.
+pub(crate) fn export_type_shape_const(
+    def: &ExportedTypeDef,
+    generics: &syn::Generics,
+    span: Span,
+) -> TokenStream {
+    let ident = syn::Ident::new(&def.rust_name, span);
+    let shape = describe_exported_type_shape(def);
+    let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
+    quote_spanned! {span=>
+        impl #impl_generics #ident #ty_generics #where_clause {
+            #[doc(hidden)]
+            pub const __MIDEN_EXPORT_TYPE_SHAPE: &'static str = #shape;
+        }
+    }
+}
+
+/// Emits compile-time checks that pin written custom types to their registrations.
+///
+/// Each check reads the shape constant through the type path as it is written at the
+/// expansion site. A type that is not the registered type fails to compile, either because
+/// it has no shape constant or because its shape text differs.
+pub(crate) fn custom_type_shape_assertions(
+    definition: &ExportedTypeDef,
+    registry: &HashMap<String, ExportedTypeDef>,
+    span: Span,
+) -> Result<TokenStream, syn::Error> {
+    let mut asserted = HashSet::new();
+    let mut checks = TokenStream::new();
+    visit_exported_type_refs(definition, &mut |type_ref| {
+        collect_custom_type_shape_assertion(type_ref, registry, span, &mut asserted, &mut checks)
+    })?;
+    Ok(checks)
+}
+
+/// Appends one shape check when a custom type path has not already been checked.
+fn collect_custom_type_shape_assertion(
+    type_ref: &TypeRef,
+    registry: &HashMap<String, ExportedTypeDef>,
+    span: Span,
+    asserted: &mut HashSet<String>,
+    checks: &mut TokenStream,
+) -> Result<(), syn::Error> {
+    if !type_ref.is_custom {
+        return Ok(());
+    }
+    let written_path = written_path(type_ref);
+    if !asserted.insert(written_path.clone()) {
+        return Ok(());
+    }
+    let Some(rust_name) = type_ref.path.last() else {
+        return Ok(());
+    };
+    let Some(registered) = registry.get(rust_name) else {
+        // The schema resolution path reports unregistered custom types with full context.
+        return Ok(());
+    };
+    let expected = describe_exported_type_shape(registered);
+    let path = syn::parse_str::<syn::Path>(&written_path).map_err(|error| {
+        syn::Error::new(
+            span,
+            format!("failed to reconstruct the path of custom type `{written_path}`: {error}"),
+        )
+    })?;
+    let message = format!(
+        "type `{written_path}` does not match the #[export_type] registration named `{}`; write \
+         the registered type here or rename one of the types",
+        registered.rust_name
+    );
+    checks.extend(quote_spanned! {span=>
+        const _: () = {
+            const fn __miden_shape_text_eq(left: &str, right: &str) -> bool {
+                let (left, right) = (left.as_bytes(), right.as_bytes());
+                if left.len() != right.len() {
+                    return false;
+                }
+                let mut index = 0;
+                while index < left.len() {
+                    if left[index] != right[index] {
+                        return false;
+                    }
+                    index += 1;
+                }
+                true
+            }
+            assert!(
+                __miden_shape_text_eq(<#path>::__MIDEN_EXPORT_TYPE_SHAPE, #expected),
+                #message
+            );
+        };
+    });
     Ok(())
 }
 
 pub(crate) fn registered_export_types() -> Vec<ExportedTypeDef> {
-    let registry = EXPORTED_TYPES.get_or_init(|| Mutex::new(Vec::new()));
-    registry.lock().expect("mutex poisoned").clone()
+    let registry = EXPORTED_TYPES.get_or_init(|| Mutex::new(HashMap::new()));
+    let registry = registry.lock().expect("mutex poisoned");
+    registry
+        .get(&macro_invocation_crate_key())
+        .map(|entries| entries.iter().map(|entry| entry.def.clone()).collect())
+        .unwrap_or_default()
 }
 
 pub(crate) fn registered_export_type_map() -> HashMap<String, ExportedTypeDef> {
@@ -120,6 +602,7 @@ pub(crate) fn map_type_to_type_ref(
 
             let path_segments: Vec<String> =
                 path.path.segments.iter().map(|segment| segment.ident.to_string()).collect();
+            let leading_colon = path.path.leading_colon.is_some();
 
             reject_unsupported_component_primitive(&ident, last.span())?;
 
@@ -133,6 +616,7 @@ pub(crate) fn map_type_to_type_ref(
                         wit_name,
                         is_custom: false,
                         path: path_segments,
+                        leading_colon,
                         dependencies: vec![inner],
                     });
                 }
@@ -147,6 +631,7 @@ pub(crate) fn map_type_to_type_ref(
                         wit_name,
                         is_custom: false,
                         path: path_segments,
+                        leading_colon,
                         dependencies: vec![ok, err],
                     });
                 }
@@ -164,6 +649,7 @@ pub(crate) fn map_type_to_type_ref(
                     wit_name: wit_type_name(wit_type).to_string(),
                     is_custom: false,
                     path: path_segments,
+                    leading_colon,
                     dependencies: Vec::new(),
                 });
             }
@@ -173,6 +659,7 @@ pub(crate) fn map_type_to_type_ref(
                     wit_name,
                     is_custom: true,
                     path: path_segments,
+                    leading_colon,
                     dependencies: Vec::new(),
                 });
             }
@@ -182,6 +669,7 @@ pub(crate) fn map_type_to_type_ref(
                     wit_name,
                     is_custom: false,
                     path: path_segments,
+                    leading_colon,
                     dependencies: Vec::new(),
                 });
             }
@@ -190,6 +678,7 @@ pub(crate) fn map_type_to_type_ref(
                 wit_name,
                 is_custom: true,
                 path: path_segments,
+                leading_colon,
                 dependencies: Vec::new(),
             })
         }
@@ -247,6 +736,7 @@ fn map_result_argument_type_to_type_ref(
             wit_name: "_".to_string(),
             is_custom: false,
             path: Vec::new(),
+            leading_colon: false,
             dependencies: Vec::new(),
         }),
         _ => map_type_to_type_ref(ty, exported_types),
@@ -308,6 +798,17 @@ fn sdk_core_type_names() -> &'static HashSet<String> {
     NAMES.get_or_init(|| parse_wit_type_names(SDK_WIT_SOURCE))
 }
 
+/// Returns the record names declared by the SDK core-types WIT document.
+fn sdk_core_record_names() -> &'static HashSet<String> {
+    static NAMES: OnceLock<HashSet<String>> = OnceLock::new();
+    NAMES.get_or_init(|| {
+        SDK_WIT_SOURCE
+            .lines()
+            .filter_map(|line| extract_wit_type_name(line.trim_start(), "record"))
+            .collect()
+    })
+}
+
 fn parse_wit_type_names(source: &str) -> HashSet<String> {
     let mut names = HashSet::new();
     for line in source.lines() {
@@ -367,18 +868,21 @@ pub(crate) fn exported_type_from_struct(
                 })?;
                 let field_ty = map_type_to_type_ref(&field.ty, &known_exported)?;
                 fields.push(ExportedField {
+                    docs: doc_comments(&field.attrs),
                     name: field_ident.to_string(),
                     ty: field_ty,
                 });
             }
 
             Ok(ExportedTypeDef {
+                docs: doc_comments(&item_struct.attrs),
                 rust_name: item_struct.ident.to_string(),
                 wit_name: item_struct.ident.to_string().to_kebab_case(),
                 kind: ExportedTypeKind::Record { fields },
             })
         }
         syn::Fields::Unit => Ok(ExportedTypeDef {
+            docs: doc_comments(&item_struct.attrs),
             rust_name: item_struct.ident.to_string(),
             wit_name: item_struct.ident.to_string().to_kebab_case(),
             kind: ExportedTypeKind::Record { fields: Vec::new() },
@@ -421,10 +925,15 @@ pub(crate) fn exported_type_from_enum(
             }
         };
 
-        variants.push(ExportedVariant { wit_name, payload });
+        variants.push(ExportedVariant {
+            docs: doc_comments(&variant.attrs),
+            wit_name,
+            payload,
+        });
     }
 
     Ok(ExportedTypeDef {
+        docs: doc_comments(&item_enum.attrs),
         rust_name: item_enum.ident.to_string(),
         wit_name: item_enum.ident.to_string().to_kebab_case(),
         kind: ExportedTypeKind::Variant { variants },
@@ -456,6 +965,14 @@ pub(crate) fn ensure_custom_type_defined(
     Ok(())
 }
 
+#[cfg(test)]
+/// Serializes tests that mutate the process-global exported-type registry.
+pub(crate) fn lock_export_type_registry_for_tests() -> std::sync::MutexGuard<'static, ()> {
+    EXPORTED_TYPES_TEST_LOCK
+        .lock()
+        .unwrap_or_else(std::sync::PoisonError::into_inner)
+}
+
 #[cfg(test)]
 pub(crate) fn reset_export_type_registry_for_tests() {
     if let Some(registry) = EXPORTED_TYPES.get() {
diff --git a/sdk/base-macros/src/types/tests.rs b/sdk/base-macros/src/types/tests.rs
index e0759c727a..5c325fb6d5 100644
--- a/sdk/base-macros/src/types/tests.rs
+++ b/sdk/base-macros/src/types/tests.rs
@@ -3,9 +3,11 @@ use std::collections::HashSet;
 use syn::parse_quote;
 
 use super::*;
+use crate::test_support::compile_rust_source;
 
 #[test]
 fn emits_hint_for_missing_export_type() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
     let ty: Type = syn::parse_str("LocalType").unwrap();
     let exported = HashMap::new();
@@ -21,6 +23,7 @@ fn emits_hint_for_missing_export_type() {
 
 #[test]
 fn allows_sdk_type_without_export_attribute() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
     let ty: Type = syn::parse_str("Asset").unwrap();
     let exported = HashMap::new();
@@ -35,6 +38,7 @@ fn allows_sdk_type_without_export_attribute() {
 
 #[test]
 fn allows_block_number_without_export_attribute() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
     let ty: Type = syn::parse_str("BlockNumber").unwrap();
     let exported = HashMap::new();
@@ -49,6 +53,7 @@ fn allows_block_number_without_export_attribute() {
 
 #[test]
 fn allows_nonce_without_export_attribute() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
     let ty: Type = syn::parse_str("Nonce").unwrap();
     let exported = HashMap::new();
@@ -63,6 +68,7 @@ fn allows_nonce_without_export_attribute() {
 
 #[test]
 fn allows_asset_amount_without_export_attribute() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
     let ty: Type = syn::parse_str("AssetAmount").unwrap();
     let exported = HashMap::new();
@@ -77,6 +83,7 @@ fn allows_asset_amount_without_export_attribute() {
 
 #[test]
 fn allows_wit_primitive_type_without_export_attribute() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
     let ty: Type = syn::parse_str("u64").unwrap();
     let exported = HashMap::new();
@@ -91,6 +98,7 @@ fn allows_wit_primitive_type_without_export_attribute() {
 
 #[test]
 fn struct_fields_allow_wit_primitive_types() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
     let item: syn::ItemStruct = parse_quote! {
         struct Foo {
@@ -113,8 +121,42 @@ fn struct_fields_allow_wit_primitive_types() {
     }
 }
 
+#[test]
+fn exported_types_capture_doc_attributes() {
+    let _registry_guard = lock_export_type_registry_for_tests();
+    reset_export_type_registry_for_tests();
+    let item_struct: syn::ItemStruct = parse_quote! {
+        /// Record documentation.
+        struct DocumentedRecord {
+            /// Field documentation.
+            value: Felt,
+        }
+    };
+    let record = exported_type_from_struct(&item_struct).expect("record definition should parse");
+    assert_eq!(record.docs, vec![" Record documentation."]);
+    let ExportedTypeKind::Record { fields } = record.kind else {
+        panic!("expected record kind");
+    };
+    assert_eq!(fields[0].docs, vec![" Field documentation."]);
+
+    let item_enum: syn::ItemEnum = parse_quote! {
+        /// Variant documentation.
+        enum DocumentedVariant {
+            /// Case documentation.
+            Case,
+        }
+    };
+    let variant = exported_type_from_enum(&item_enum).expect("variant definition should parse");
+    assert_eq!(variant.docs, vec![" Variant documentation."]);
+    let ExportedTypeKind::Variant { variants } = variant.kind else {
+        panic!("expected variant kind");
+    };
+    assert_eq!(variants[0].docs, vec![" Case documentation."]);
+}
+
 #[test]
 fn maps_rust_primitive_types_to_wit_types() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
     let exported = HashMap::new();
     let exported_names = HashSet::new();
@@ -144,6 +186,7 @@ fn maps_rust_primitive_types_to_wit_types() {
 
 #[test]
 fn rejects_unsupported_component_primitives() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
     let exported = HashMap::new();
 
@@ -161,6 +204,7 @@ fn rejects_unsupported_component_primitives() {
 
 #[test]
 fn rejects_unsupported_component_primitives_nested_in_option_or_result() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
     let exported = HashMap::new();
 
@@ -178,6 +222,7 @@ fn rejects_unsupported_component_primitives_nested_in_option_or_result() {
 
 #[test]
 fn maps_rust_option_type_to_wit_option() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
     let exported = HashMap::new();
     let exported_names = HashSet::new();
@@ -193,6 +238,7 @@ fn maps_rust_option_type_to_wit_option() {
 
 #[test]
 fn option_type_tracks_nested_core_type_imports() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
     let exported = HashMap::new();
     let ty: Type = syn::parse_str("Option<Word>").unwrap();
@@ -207,6 +253,7 @@ fn option_type_tracks_nested_core_type_imports() {
 
 #[test]
 fn option_type_validates_nested_custom_type() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
     let exported = HashMap::new();
     let ty: Type = syn::parse_str("Option<LocalType>").unwrap();
@@ -223,6 +270,7 @@ fn option_type_validates_nested_custom_type() {
 
 #[test]
 fn maps_rust_result_type_to_wit_result() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
     let exported = HashMap::new();
     let exported_names = HashSet::new();
@@ -238,6 +286,7 @@ fn maps_rust_result_type_to_wit_result() {
 
 #[test]
 fn result_type_tracks_nested_core_type_imports() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
     let exported = HashMap::new();
     let ty: Type = syn::parse_str("Result<Word, Felt>").unwrap();
@@ -252,6 +301,7 @@ fn result_type_tracks_nested_core_type_imports() {
 
 #[test]
 fn result_type_validates_nested_custom_type() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
     let exported = HashMap::new();
     let ty: Type = syn::parse_str("Result<u64, LocalType>").unwrap();
@@ -268,6 +318,7 @@ fn result_type_validates_nested_custom_type() {
 
 #[test]
 fn result_type_maps_unit_argument_to_wit_placeholder() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
     let exported = HashMap::new();
     let ty: Type = syn::parse_str("Result<(), Felt>").unwrap();
@@ -278,6 +329,7 @@ fn result_type_maps_unit_argument_to_wit_placeholder() {
 
 #[test]
 fn struct_field_missing_export_type_hint() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
     let item: syn::ItemStruct = parse_quote! {
         struct Foo {
@@ -300,6 +352,7 @@ fn struct_field_missing_export_type_hint() {
 
 #[test]
 fn enum_payload_missing_export_type_hint() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
     let item: syn::ItemEnum = parse_quote! {
         enum Foo {
@@ -326,6 +379,7 @@ fn enum_payload_missing_export_type_hint() {
 
 #[test]
 fn forward_reference_between_export_types_is_allowed() {
+    let _registry_guard = lock_export_type_registry_for_tests();
     reset_export_type_registry_for_tests();
 
     let first: syn::ItemStruct = parse_quote! {
@@ -351,3 +405,495 @@ fn forward_reference_between_export_types_is_allowed() {
         panic!("expected record kind");
     }
 }
+
+#[test]
+fn rejects_same_name_different_shape_export_type_registration() {
+    let first: syn::ItemStruct = parse_quote! {
+        struct Fee {
+            amount: u64,
+        }
+    };
+    let second: syn::ItemStruct = parse_quote! {
+        struct Fee {
+            amount: Word,
+        }
+    };
+    let mut registry = Vec::new();
+    register_export_type_in(
+        &mut registry,
+        exported_type_from_struct(&first).unwrap(),
+        Span::call_site(),
+        ("tests.rs".to_string(), 1, 0),
+    )
+    .unwrap();
+
+    let error = register_export_type_in(
+        &mut registry,
+        exported_type_from_struct(&second).unwrap(),
+        Span::call_site(),
+        ("tests.rs".to_string(), 2, 0),
+    )
+    .unwrap_err()
+    .to_string();
+
+    assert!(error.contains("conflicting #[export_type] registration"));
+    assert!(error.contains("record fee { amount: u64 }"));
+    assert!(error.contains("record fee { amount: word }"));
+    assert!(error.contains("Rename one type or make both registrations structurally identical"));
+    assert!(error.contains("restart the rust-analyzer proc-macro server"));
+    assert_eq!(registry.len(), 1);
+}
+
+#[test]
+fn allows_same_shape_export_type_reregistration() {
+    let first: syn::ItemStruct = parse_quote! {
+        /// Documentation from rustc's expansion.
+        struct Fee {
+            amount: u64,
+        }
+    };
+    let second: syn::ItemStruct = parse_quote! {
+        /// Documentation from rust-analyzer's expansion.
+        struct Fee {
+            amount: u64,
+        }
+    };
+    let mut registry = Vec::new();
+
+    register_export_type_in(
+        &mut registry,
+        exported_type_from_struct(&first).unwrap(),
+        Span::call_site(),
+        ("tests.rs".to_string(), 1, 0),
+    )
+    .unwrap();
+    register_export_type_in(
+        &mut registry,
+        exported_type_from_struct(&second).unwrap(),
+        Span::call_site(),
+        ("tests.rs".to_string(), 1, 0),
+    )
+    .unwrap();
+
+    assert_eq!(registry.len(), 1);
+    assert_eq!(registry[0].def.docs, vec![" Documentation from rustc's expansion."]);
+}
+
+#[test]
+fn same_shape_registrations_from_different_locations_conflict() {
+    let first: syn::ItemStruct = parse_quote! {
+        struct Fee {
+            amount: u64,
+        }
+    };
+    let second: syn::ItemStruct = parse_quote! {
+        struct Fee {
+            amount: u64,
+        }
+    };
+    let mut registry = Vec::new();
+
+    register_export_type_in(
+        &mut registry,
+        exported_type_from_struct(&first).unwrap(),
+        Span::call_site(),
+        ("tests.rs".to_string(), 1, 0),
+    )
+    .unwrap();
+    // A second item with the same name is ambiguous even when the shapes are equal.
+    let error = register_export_type_in(
+        &mut registry,
+        exported_type_from_struct(&second).unwrap(),
+        Span::call_site(),
+        ("tests.rs".to_string(), 2, 0),
+    )
+    .unwrap_err()
+    .to_string();
+
+    assert!(error.contains("conflicting #[export_type] registration"));
+    assert_eq!(registry.len(), 1);
+}
+
+#[test]
+fn same_location_reregistration_replaces_a_stale_shape() {
+    let first: syn::ItemStruct = parse_quote! {
+        struct Fee {
+            amount: u64,
+        }
+    };
+    let second: syn::ItemStruct = parse_quote! {
+        struct Fee {
+            amount: u32,
+        }
+    };
+    let mut registry = Vec::new();
+    let location = ("tests.rs".to_string(), 1, 0);
+
+    register_export_type_in(
+        &mut registry,
+        exported_type_from_struct(&first).unwrap(),
+        Span::call_site(),
+        location.clone(),
+    )
+    .unwrap();
+    // A long-lived macro host re-expands the edited item from the same location.
+    register_export_type_in(
+        &mut registry,
+        exported_type_from_struct(&second).unwrap(),
+        Span::call_site(),
+        location,
+    )
+    .unwrap();
+
+    assert_eq!(registry.len(), 1);
+    assert_eq!(describe_exported_type_shape(&registry[0].def), "record fee { amount: u32 }");
+}
+
+#[test]
+fn bare_core_type_name_collision_fails_identity_guard() {
+    let item: syn::ItemStruct = parse_quote! {
+        struct NoteFields {
+            value: Word,
+        }
+    };
+    let definition = exported_type_from_struct(&item).unwrap();
+    let guards = nominal_type_identity_guards(&definition, Span::call_site()).unwrap();
+    let source = format!(
+        r#"
+extern crate self as miden;
+pub struct Word;
+mod user {{
+    pub struct Word;
+    {guards}
+}}
+fn main() {{}}
+"#
+    );
+
+    let output = compile_rust_source(&source);
+    assert!(!output.status.success(), "a local `Word` must fail the SDK identity guard");
+    let stderr = String::from_utf8_lossy(&output.stderr);
+    assert!(
+        stderr.contains("__miden_core_type_name_collision_use_sdk_type_or_add_export_type"),
+        "identity diagnostic is not actionable:\n{stderr}"
+    );
+}
+
+#[test]
+fn bare_sdk_core_type_import_passes_identity_guard() {
+    let item: syn::ItemStruct = parse_quote! {
+        struct NoteFields {
+            value: Word,
+        }
+    };
+    let definition = exported_type_from_struct(&item).unwrap();
+    let guards = nominal_type_identity_guards(&definition, Span::call_site()).unwrap();
+    let source = format!(
+        r#"
+extern crate self as miden;
+pub struct Word;
+mod user {{
+    use crate::Word;
+    {guards}
+}}
+fn main() {{}}
+"#
+    );
+
+    let output = compile_rust_source(&source);
+    assert!(
+        output.status.success(),
+        "a genuine SDK import must pass the identity guard:\n{}",
+        String::from_utf8_lossy(&output.stderr)
+    );
+}
+
+#[test]
+fn unregistered_same_named_type_fails_the_shape_check() {
+    let registered: syn::ItemStruct = parse_quote! {
+        struct Price {
+            amount: u64,
+        }
+    };
+    let registered_def = exported_type_from_struct(&registered).unwrap();
+    let root: syn::ItemStruct = parse_quote! {
+        struct Root {
+            price: other::Price,
+        }
+    };
+    let root_def = exported_type_from_struct(&root).unwrap();
+    let registry = HashMap::from([("Price".to_string(), registered_def.clone())]);
+    let shape_const =
+        export_type_shape_const(&registered_def, &syn::Generics::default(), Span::call_site());
+    let assertions = custom_type_shape_assertions(&root_def, &registry, Span::call_site()).unwrap();
+    let source = format!(
+        r#"
+mod registered {{
+    pub struct Price {{ pub amount: u64 }}
+    {shape_const}
+}}
+mod other {{
+    pub struct Price {{ pub amount: u32 }}
+}}
+{assertions}
+fn main() {{}}
+"#
+    );
+
+    let output = compile_rust_source(&source);
+    assert!(
+        !output.status.success(),
+        "a type without #[export_type] must fail the shape check"
+    );
+    let stderr = String::from_utf8_lossy(&output.stderr);
+    assert!(
+        stderr.contains("__MIDEN_EXPORT_TYPE_SHAPE"),
+        "the missing shape constant is not reported:
+{stderr}"
+    );
+}
+
+#[test]
+fn same_named_type_with_a_different_shape_fails_the_shape_check() {
+    let registered: syn::ItemStruct = parse_quote! {
+        struct Price {
+            amount: u64,
+        }
+    };
+    let impostor: syn::ItemStruct = parse_quote! {
+        struct Price {
+            amount: u32,
+        }
+    };
+    let registered_def = exported_type_from_struct(&registered).unwrap();
+    let impostor_def = exported_type_from_struct(&impostor).unwrap();
+    let root: syn::ItemStruct = parse_quote! {
+        struct Root {
+            price: other::Price,
+        }
+    };
+    let root_def = exported_type_from_struct(&root).unwrap();
+    let registry = HashMap::from([("Price".to_string(), registered_def.clone())]);
+    let registered_const =
+        export_type_shape_const(&registered_def, &syn::Generics::default(), Span::call_site());
+    let impostor_const =
+        export_type_shape_const(&impostor_def, &syn::Generics::default(), Span::call_site());
+    let assertions = custom_type_shape_assertions(&root_def, &registry, Span::call_site()).unwrap();
+    let source = format!(
+        r#"
+mod registered {{
+    pub struct Price {{ pub amount: u64 }}
+    {registered_const}
+}}
+mod other {{
+    pub struct Price {{ pub amount: u32 }}
+    {impostor_const}
+}}
+{assertions}
+fn main() {{}}
+"#
+    );
+
+    let output = compile_rust_source(&source);
+    assert!(!output.status.success(), "a different shape must fail the shape check");
+    let stderr = String::from_utf8_lossy(&output.stderr);
+    assert!(
+        stderr.contains("does not match the #[export_type] registration"),
+        "the shape diagnostic is not actionable:
+{stderr}"
+    );
+}
+
+#[test]
+fn the_registered_type_passes_the_shape_check() {
+    let registered: syn::ItemStruct = parse_quote! {
+        struct Price {
+            amount: u64,
+        }
+    };
+    let registered_def = exported_type_from_struct(&registered).unwrap();
+    let root: syn::ItemStruct = parse_quote! {
+        struct Root {
+            price: registered::Price,
+        }
+    };
+    let root_def = exported_type_from_struct(&root).unwrap();
+    let registry = HashMap::from([("Price".to_string(), registered_def.clone())]);
+    let shape_const =
+        export_type_shape_const(&registered_def, &syn::Generics::default(), Span::call_site());
+    let assertions = custom_type_shape_assertions(&root_def, &registry, Span::call_site()).unwrap();
+    let source = format!(
+        r#"
+mod registered {{
+    pub struct Price {{ pub amount: u64 }}
+    {shape_const}
+}}
+{assertions}
+fn main() {{}}
+"#
+    );
+
+    let output = compile_rust_source(&source);
+    assert!(
+        output.status.success(),
+        "the registered type must pass the shape check:
+{}",
+        String::from_utf8_lossy(&output.stderr)
+    );
+}
+
+#[test]
+fn foreign_option_type_fails_the_builtin_identity_guard() {
+    let item: syn::ItemStruct = parse_quote! {
+        struct NoteFields {
+            value: fake::Option<u64>,
+        }
+    };
+    let definition = exported_type_from_struct(&item).unwrap();
+    let guards = nominal_type_identity_guards(&definition, Span::call_site()).unwrap();
+    let source = format!(
+        r#"
+mod fake {{
+    #[allow(dead_code)]
+    pub struct Option<T>(pub T);
+}}
+mod user {{
+    use crate::fake;
+    {guards}
+}}
+fn main() {{}}
+"#
+    );
+
+    let output = compile_rust_source(&source);
+    assert!(!output.status.success(), "a foreign `Option` must fail the builtin guard");
+    let stderr = String::from_utf8_lossy(&output.stderr);
+    assert!(
+        stderr.contains("__miden_builtin_type_name_collision_use_the_core_type"),
+        "builtin diagnostic is not actionable:
+{stderr}"
+    );
+}
+
+#[test]
+fn a_shadowed_primitive_fails_the_builtin_identity_guard() {
+    let item: syn::ItemStruct = parse_quote! {
+        struct NoteFields {
+            value: u64,
+        }
+    };
+    let definition = exported_type_from_struct(&item).unwrap();
+    let guards = nominal_type_identity_guards(&definition, Span::call_site()).unwrap();
+    let source = format!(
+        r#"
+mod user {{
+    #[allow(non_camel_case_types, dead_code)]
+    pub struct u64;
+    {guards}
+}}
+fn main() {{}}
+"#
+    );
+
+    let output = compile_rust_source(&source);
+    assert!(!output.status.success(), "a shadowed primitive must fail the builtin guard");
+    let stderr = String::from_utf8_lossy(&output.stderr);
+    assert!(
+        stderr.contains("__miden_builtin_type_name_collision_use_the_core_type"),
+        "builtin diagnostic is not actionable:
+{stderr}"
+    );
+}
+
+#[test]
+fn unit_result_shapes_pass_the_builtin_identity_guard() {
+    let item: syn::ItemStruct = parse_quote! {
+        struct NoteFields {
+            done: Result<(), u32>,
+            partial: Result<u32, ()>,
+        }
+    };
+    let definition = exported_type_from_struct(&item).unwrap();
+    let guards = nominal_type_identity_guards(&definition, Span::call_site()).unwrap();
+    let source = format!(
+        r#"
+mod user {{
+    {guards}
+}}
+fn main() {{}}
+"#
+    );
+
+    let output = compile_rust_source(&source);
+    assert!(
+        output.status.success(),
+        "unit result shapes must pass the builtin guard:
+{}",
+        String::from_utf8_lossy(&output.stderr)
+    );
+}
+
+#[test]
+fn genuine_builtin_types_pass_the_builtin_identity_guard() {
+    let item: syn::ItemStruct = parse_quote! {
+        struct NoteFields {
+            maybe: Option<u64>,
+            either: core::result::Result<u32, u8>,
+            flag: bool,
+        }
+    };
+    let definition = exported_type_from_struct(&item).unwrap();
+    let guards = nominal_type_identity_guards(&definition, Span::call_site()).unwrap();
+    let source = format!(
+        r#"
+mod user {{
+    {guards}
+}}
+fn main() {{}}
+"#
+    );
+
+    let output = compile_rust_source(&source);
+    assert!(
+        output.status.success(),
+        "genuine builtins must pass the builtin guard:
+{}",
+        String::from_utf8_lossy(&output.stderr)
+    );
+}
+
+#[test]
+fn leading_colon_path_round_trips() {
+    let _registry_guard = lock_export_type_registry_for_tests();
+    reset_export_type_registry_for_tests();
+    let exported = HashMap::new();
+
+    let ty: Type = syn::parse_str("::core::primitive::u64").unwrap();
+    let type_ref = map_type_to_type_ref(&ty, &exported).expect("primitive should resolve");
+    assert!(type_ref.leading_colon);
+    assert_eq!(written_type_text(&type_ref), "::core::primitive::u64");
+    // A fully qualified primitive reconstructs to the canonical text, so the builtin
+    // identity guard compares one type with itself.
+    assert_eq!(
+        builtin_canonical_type_text(&type_ref).as_deref(),
+        Some("::core::primitive::u64")
+    );
+
+    let ty: Type = syn::parse_str("u64").unwrap();
+    let type_ref = map_type_to_type_ref(&ty, &exported).expect("primitive should resolve");
+    assert!(!type_ref.leading_colon);
+    assert_eq!(written_type_text(&type_ref), "u64");
+}
+
+#[test]
+fn leading_colon_generic_path_round_trips() {
+    let _registry_guard = lock_export_type_registry_for_tests();
+    reset_export_type_registry_for_tests();
+    let exported = HashMap::new();
+
+    let ty: Type = syn::parse_str("::core::option::Option<::core::primitive::u32>").unwrap();
+    let type_ref = map_type_to_type_ref(&ty, &exported).expect("option should resolve");
+
+    assert!(type_ref.leading_colon);
+    assert_eq!(written_type_text(&type_ref), "::core::option::Option<::core::primitive::u32>");
+}
diff --git a/sdk/base-macros/src/util.rs b/sdk/base-macros/src/util.rs
index 625aec103d..0596cd9d5a 100644
--- a/sdk/base-macros/src/util.rs
+++ b/sdk/base-macros/src/util.rs
@@ -19,6 +19,9 @@ const FRONTEND_METADATA_BYTES_STATIC_IDENT: &str = "__miden_frontend_metadata_by
 /// Linker symbol used to reject multiple frontend-marked procedures in one project.
 pub(crate) const FRONTEND_METADATA_UNIQUENESS_GUARD_SYMBOL: &str =
     "__MIDEN_FRONTEND_METADATA_UNIQUENESS_GUARD";
+/// Diagnostic emitted when `#[note]` is applied to a tuple struct.
+pub(crate) const NOTE_NAMED_FIELDS_ERROR: &str =
+    "#[note] requires named fields; tuple structs are no longer supported";
 
 /// Returns true if a function's return type is unit.
 pub(crate) fn is_unit_return_type(output: &syn::ReturnType) -> bool {
diff --git a/sdk/base-macros/src/wit_builder.rs b/sdk/base-macros/src/wit_builder.rs
index 0f9ee25cc3..9feb76414e 100644
--- a/sdk/base-macros/src/wit_builder.rs
+++ b/sdk/base-macros/src/wit_builder.rs
@@ -49,6 +49,20 @@ impl WitBuilder {
         result
     }
 
+    /// Writes a braced `package` block and returns the closure result.
+    pub(crate) fn package_block<T>(
+        &mut self,
+        name: &str,
+        version: &Version,
+        build: impl FnOnce(&mut WitBody) -> T,
+    ) -> T {
+        let mut body = WitBody::new();
+        let result = build(&mut body);
+        let package = package_with_version(name, version);
+        self.push_block(format!("package {package} {{"), body.finish());
+        result
+    }
+
     /// Finishes rendering and returns the final WIT source.
     pub(crate) fn finish(self) -> String {
         self.source.to_string() + "\n"
@@ -154,6 +168,12 @@ mod tests {
         wit.world("foo-world", |world| {
             world.line("export foo;");
         });
+        wit.blank_line();
+        wit.package_block("miden:dependency", &Version::new(2, 0, 0), |package| {
+            package.block("interface dependency {", |interface| {
+                interface.line("type value = u32;");
+            });
+        });
 
         let expected = r#"// This file is auto-generated by the `#[test]` macro.
 // Do not edit this file manually.
@@ -173,6 +193,12 @@ interface foo {
 world foo-world {
     export foo;
 }
+
+package miden:dependency@2.0.0 {
+    interface dependency {
+        type value = u32;
+    }
+}
 "#;
 
         assert_eq!(wit.finish(), expected);
diff --git a/sdk/base-macros/tests/note_trailing_data.rs b/sdk/base-macros/tests/note_trailing_data.rs
index 310e54100f..f44e798a9f 100644
--- a/sdk/base-macros/tests/note_trailing_data.rs
+++ b/sdk/base-macros/tests/note_trailing_data.rs
@@ -16,10 +16,6 @@ pub mod active_note {
     pub trait ActiveNote {}
 }
 
-#[derive(Debug)]
-#[note]
-struct UnitNote;
-
 #[derive(Debug)]
 #[note]
 struct OneFeltNote {
@@ -27,14 +23,6 @@ struct OneFeltNote {
     a: miden::Felt,
 }
 
-#[test]
-fn unit_note_rejects_trailing_data() {
-    let felts = [miden::Felt::new(0).unwrap()];
-
-    let err = UnitNote::try_from(felts.as_slice()).unwrap_err();
-    assert_eq!(err, miden::felt_repr::FeltReprError::TrailingData { pos: 0, len: 1 });
-}
-
 #[test]
 fn note_struct_rejects_trailing_data() {
     let felts = [miden::Felt::new(1).unwrap(), miden::Felt::new(2).unwrap()];
diff --git a/sdk/base-macros/tests/unit_note_trailing_data.rs b/sdk/base-macros/tests/unit_note_trailing_data.rs
new file mode 100644
index 0000000000..34f4cb0656
--- /dev/null
+++ b/sdk/base-macros/tests/unit_note_trailing_data.rs
@@ -0,0 +1,33 @@
+//! Tests trailing-data rejection for unit note structs.
+//!
+//! This stays separate because one crate may hold only one `#[note]` struct.
+
+use core::convert::TryFrom;
+
+use miden_base_macros::note;
+
+extern crate self as miden;
+
+pub use miden_field::Felt;
+
+pub mod felt_repr {
+    pub use miden_field_repr::{FeltReader, FeltReprError, FeltWriter, FromFeltRepr, ToFeltRepr};
+}
+
+pub mod active_note {
+    /// Minimal stand-in for the SDK `ActiveNote` trait implemented by the `#[note]` struct
+    /// expansion.
+    pub trait ActiveNote {}
+}
+
+#[derive(Debug)]
+#[note]
+struct UnitNote;
+
+#[test]
+fn unit_note_rejects_trailing_data() {
+    let felts = [miden::Felt::new(0).unwrap()];
+
+    let err = UnitNote::try_from(felts.as_slice()).unwrap_err();
+    assert_eq!(err, miden::felt_repr::FeltReprError::TrailingData { pos: 0, len: 1 });
+}
diff --git a/sdk/base-macros/wit/miden.wit b/sdk/base-macros/wit/miden.wit
index 719aae4e5f..20f25ecbf9 100644
--- a/sdk/base-macros/wit/miden.wit
+++ b/sdk/base-macros/wit/miden.wit
@@ -40,9 +40,6 @@ interface core-types {
 	suffix: felt
     }
 
-    /// Creates a new account ID from a field element.
-    //account-id-from-felt: func(felt: felt) -> account-id;
-
     /// Recipient of the note, i.e., hash(hash(hash(serial_num, [0; 4]), note_script_hash), input_hash)
     record recipient {
         inner: word
diff --git a/sdk/base-sys/.cargo/config.toml b/sdk/base-sys/.cargo/config.toml
new file mode 100644
index 0000000000..7fe3f77d7f
--- /dev/null
+++ b/sdk/base-sys/.cargo/config.toml
@@ -0,0 +1,3 @@
+# Per-crate copy: per-member check-each builds run in this directory and default to the Miden Wasm target (a no-op for proc-macro roots, which always build for the host). sdk/ has no directory-wide config so host-side crates build natively.
+[build]
+target = "wasm32-wasip1"
diff --git a/sdk/base/.cargo/config.toml b/sdk/base/.cargo/config.toml
new file mode 100644
index 0000000000..7fe3f77d7f
--- /dev/null
+++ b/sdk/base/.cargo/config.toml
@@ -0,0 +1,3 @@
+# Per-crate copy: per-member check-each builds run in this directory and default to the Miden Wasm target (a no-op for proc-macro roots, which always build for the host). sdk/ has no directory-wide config so host-side crates build natively.
+[build]
+target = "wasm32-wasip1"
diff --git a/sdk/field-repr/derive/.cargo/config.toml b/sdk/field-repr/derive/.cargo/config.toml
new file mode 100644
index 0000000000..7fe3f77d7f
--- /dev/null
+++ b/sdk/field-repr/derive/.cargo/config.toml
@@ -0,0 +1,3 @@
+# Per-crate copy: per-member check-each builds run in this directory and default to the Miden Wasm target (a no-op for proc-macro roots, which always build for the host). sdk/ has no directory-wide config so host-side crates build natively.
+[build]
+target = "wasm32-wasip1"
diff --git a/sdk/field-repr/derive/src/lib.rs b/sdk/field-repr/derive/src/lib.rs
index 236c5e9074..5a0050a69e 100644
--- a/sdk/field-repr/derive/src/lib.rs
+++ b/sdk/field-repr/derive/src/lib.rs
@@ -130,7 +130,7 @@ use proc_macro::TokenStream;
 use proc_macro2::TokenStream as TokenStream2;
 use quote::{format_ident, quote};
 use syn::{
-    Data, DeriveInput, Error, Field, Fields, Index, Variant, parse_macro_input,
+    Data, DeriveInput, Error, Field, Fields, Index, LitStr, Variant, parse_macro_input,
     punctuated::Punctuated, spanned::Spanned, token::Comma,
 };
 
@@ -249,6 +249,9 @@ fn ensure_no_explicit_discriminants(
 /// Enums are encoded as a `u32` tag (variant ordinal, starting from `0`)
 /// followed by the selected variant payload encoded in declaration order.
 ///
+/// Use `#[felt_repr(crate_path = "path::to::felt_repr")]` on the type to override the generated
+/// runtime crate path.
+///
 /// # Example
 ///
 /// ```ignore
@@ -260,15 +263,13 @@ fn ensure_no_explicit_discriminants(
 ///     pub suffix: Felt,
 /// }
 /// ```
-#[proc_macro_derive(DeriveFromFeltRepr)]
+#[proc_macro_derive(DeriveFromFeltRepr, attributes(felt_repr))]
 pub fn derive_from_felt_repr(input: TokenStream) -> TokenStream {
     let input = parse_macro_input!(input as DeriveInput);
-
-    let expanded = derive_from_felt_repr_impl(
-        &input,
-        quote!(miden_field_repr),
-        quote!(miden_field_repr::Felt),
-    );
+    let expanded = felt_repr_crate_path(&input).and_then(|felt_repr_crate| {
+        let felt_ty = quote!(#felt_repr_crate::Felt);
+        derive_from_felt_repr_impl(&input, felt_repr_crate, felt_ty)
+    });
     match expanded {
         Ok(ts) => ts,
         Err(err) => err.into_compile_error().into(),
@@ -411,6 +412,9 @@ fn derive_from_felt_repr_impl(
 /// Enums are encoded as a `u32` tag (variant ordinal, starting from `0`)
 /// followed by the selected variant payload encoded in declaration order.
 ///
+/// Use `#[felt_repr(crate_path = "path::to::felt_repr")]` on the type to override the generated
+/// runtime crate path.
+///
 /// # Example
 ///
 /// ```ignore
@@ -422,16 +426,38 @@ fn derive_from_felt_repr_impl(
 ///     pub suffix: Felt,
 /// }
 /// ```
-#[proc_macro_derive(DeriveToFeltRepr)]
+#[proc_macro_derive(DeriveToFeltRepr, attributes(felt_repr))]
 pub fn derive_to_felt_repr(input: TokenStream) -> TokenStream {
     let input = parse_macro_input!(input as DeriveInput);
 
-    match derive_to_felt_repr_impl(&input, quote!(miden_field_repr)) {
+    match felt_repr_crate_path(&input)
+        .and_then(|felt_repr_crate| derive_to_felt_repr_impl(&input, felt_repr_crate))
+    {
         Ok(ts) => ts,
         Err(err) => err.into_compile_error().into(),
     }
 }
 
+/// Returns the felt representation crate path selected by a generated facade.
+fn felt_repr_crate_path(input: &DeriveInput) -> Result<TokenStream2, Error> {
+    let mut selected = None;
+    for attr in input.attrs.iter().filter(|attr| attr.path().is_ident("felt_repr")) {
+        attr.parse_nested_meta(|meta| {
+            if !meta.path.is_ident("crate_path") {
+                return Err(meta.error("expected `crate_path = \"path\"`"));
+            }
+            if selected.is_some() {
+                return Err(meta.error("`crate_path` is already set"));
+            }
+            let literal: LitStr = meta.value()?.parse()?;
+            let path: syn::Path = literal.parse()?;
+            selected = Some(quote!(#path));
+            Ok(())
+        })?;
+    }
+    Ok(selected.unwrap_or_else(|| quote!(miden_field_repr)))
+}
+
 fn derive_to_felt_repr_impl(
     input: &DeriveInput,
     felt_repr_crate: TokenStream2,
diff --git a/sdk/field-repr/repr/.cargo/config.toml b/sdk/field-repr/repr/.cargo/config.toml
new file mode 100644
index 0000000000..7fe3f77d7f
--- /dev/null
+++ b/sdk/field-repr/repr/.cargo/config.toml
@@ -0,0 +1,3 @@
+# Per-crate copy: per-member check-each builds run in this directory and default to the Miden Wasm target (a no-op for proc-macro roots, which always build for the host). sdk/ has no directory-wide config so host-side crates build natively.
+[build]
+target = "wasm32-wasip1"
diff --git a/sdk/field-repr/tests/.cargo/config.toml b/sdk/field-repr/tests/.cargo/config.toml
new file mode 100644
index 0000000000..7fe3f77d7f
--- /dev/null
+++ b/sdk/field-repr/tests/.cargo/config.toml
@@ -0,0 +1,3 @@
+# Per-crate copy: per-member check-each builds run in this directory and default to the Miden Wasm target (a no-op for proc-macro roots, which always build for the host). sdk/ has no directory-wide config so host-side crates build natively.
+[build]
+target = "wasm32-wasip1"
diff --git a/sdk/note-bindings/Cargo.toml b/sdk/note-bindings/Cargo.toml
new file mode 100644
index 0000000000..4392696adc
--- /dev/null
+++ b/sdk/note-bindings/Cargo.toml
@@ -0,0 +1,30 @@
+[package]
+name = "miden-note-bindings"
+description = "Typed host bindings for Miden note storage schemas"
+version = "0.14.0"
+rust-version.workspace = true
+authors.workspace = true
+repository.workspace = true
+homepage.workspace = true
+documentation.workspace = true
+categories.workspace = true
+keywords.workspace = true
+license.workspace = true
+readme.workspace = true
+edition.workspace = true
+
+[lib]
+doctest = false
+
+[dependencies]
+miden-field.workspace = true
+miden-field-repr.workspace = true
+miden-note-bindings-macros.workspace = true
+miden-note-schema.workspace = true
+miden-protocol = { workspace = true, features = ["std"] }
+
+[dev-dependencies]
+miden-mast-package = { workspace = true, features = ["std"] }
+midenc-frontend-wasm-metadata.workspace = true
+midenc-integration-test-support.workspace = true
+tempfile.workspace = true
diff --git a/sdk/note-bindings/macros/Cargo.toml b/sdk/note-bindings/macros/Cargo.toml
new file mode 100644
index 0000000000..522c421b45
--- /dev/null
+++ b/sdk/note-bindings/macros/Cargo.toml
@@ -0,0 +1,31 @@
+[package]
+name = "miden-note-bindings-macros"
+description = "Procedural macros for typed Miden note storage bindings"
+version = "0.14.0"
+rust-version.workspace = true
+authors.workspace = true
+repository.workspace = true
+homepage.workspace = true
+documentation.workspace = true
+categories.workspace = true
+keywords.workspace = true
+license.workspace = true
+readme.workspace = true
+edition.workspace = true
+
+[lib]
+proc-macro = true
+doctest = false
+
+[dependencies]
+miden-note-schema.workspace = true
+miden-note-schema-codegen.workspace = true
+midenc-frontend-wasm-metadata.workspace = true
+proc-macro2.workspace = true
+proc-macro-crate = { workspace = true }
+quote.workspace = true
+syn.workspace = true
+
+[dev-dependencies]
+midenc-expect-test.workspace = true
+prettyplease = { workspace = true }
diff --git a/sdk/note-bindings/macros/expected/custom.rs b/sdk/note-bindings/macros/expected/custom.rs
new file mode 100644
index 0000000000..9cdf61093a
--- /dev/null
+++ b/sdk/note-bindings/macros/expected/custom.rs
@@ -0,0 +1,649 @@
+#[doc(hidden)]
+mod __miden_note_bindings_a3280bdaca3ec21e {
+    #[doc(hidden)]
+    trait __MidenNoteEncode {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()>;
+    }
+    #[doc(hidden)]
+    trait __MidenNoteDecode: ::core::marker::Sized {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self>;
+    }
+    impl __MidenNoteEncode for u64 {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            ::miden_note_bindings::__private::miden_field_repr::ToFeltRepr::write_felt_repr(
+                self,
+                writer,
+            );
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode for u64 {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            ::miden_note_bindings::__private::miden_field_repr::FromFeltRepr::from_felt_repr(
+                    reader,
+                )
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!(
+                            "failed to decode {} from note storage: {error}",
+                            stringify!(u64),
+                        ),
+                    )
+                })
+        }
+    }
+    impl __MidenNoteEncode for u32 {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            ::miden_note_bindings::__private::miden_field_repr::ToFeltRepr::write_felt_repr(
+                self,
+                writer,
+            );
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode for u32 {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            ::miden_note_bindings::__private::miden_field_repr::FromFeltRepr::from_felt_repr(
+                    reader,
+                )
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!(
+                            "failed to decode {} from note storage: {error}",
+                            stringify!(u32),
+                        ),
+                    )
+                })
+        }
+    }
+    impl __MidenNoteEncode for u8 {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            ::miden_note_bindings::__private::miden_field_repr::ToFeltRepr::write_felt_repr(
+                self,
+                writer,
+            );
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode for u8 {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            ::miden_note_bindings::__private::miden_field_repr::FromFeltRepr::from_felt_repr(
+                    reader,
+                )
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!(
+                            "failed to decode {} from note storage: {error}",
+                            stringify!(u8),
+                        ),
+                    )
+                })
+        }
+    }
+    impl __MidenNoteEncode for bool {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            ::miden_note_bindings::__private::miden_field_repr::ToFeltRepr::write_felt_repr(
+                self,
+                writer,
+            );
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode for bool {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            ::miden_note_bindings::__private::miden_field_repr::FromFeltRepr::from_felt_repr(
+                    reader,
+                )
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!(
+                            "failed to decode {} from note storage: {error}",
+                            stringify!(bool),
+                        ),
+                    )
+                })
+        }
+    }
+    impl __MidenNoteEncode for ::miden_note_bindings::__private::miden_field::Felt {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            ::miden_note_bindings::__private::miden_field_repr::ToFeltRepr::write_felt_repr(
+                self,
+                writer,
+            );
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode for ::miden_note_bindings::__private::miden_field::Felt {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            ::miden_note_bindings::__private::miden_field_repr::FromFeltRepr::from_felt_repr(
+                    reader,
+                )
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!(
+                            "failed to decode {} from note storage: {error}",
+                            stringify!(::miden_note_bindings::__private::miden_field::Felt),
+                        ),
+                    )
+                })
+        }
+    }
+    impl __MidenNoteEncode for ::miden_note_bindings::__private::miden_field::Word {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            ::miden_note_bindings::__private::miden_field_repr::ToFeltRepr::write_felt_repr(
+                self,
+                writer,
+            );
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode for ::miden_note_bindings::__private::miden_field::Word {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            ::miden_note_bindings::__private::miden_field_repr::FromFeltRepr::from_felt_repr(
+                    reader,
+                )
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!(
+                            "failed to decode {} from note storage: {error}",
+                            stringify!(::miden_note_bindings::__private::miden_field::Word),
+                        ),
+                    )
+                })
+        }
+    }
+    impl __MidenNoteEncode
+    for ::miden_note_bindings::__private::miden_protocol::account::AccountId {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            writer.write(self.prefix().as_felt());
+            writer.write(self.suffix());
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode
+    for ::miden_note_bindings::__private::miden_protocol::account::AccountId {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            let prefix = reader
+                .read()
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!("failed to decode account-id prefix: {error}"),
+                    )
+                })?;
+            let suffix = reader
+                .read()
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!("failed to decode account-id suffix: {error}"),
+                    )
+                })?;
+            ::miden_note_bindings::__private::miden_protocol::account::AccountId::try_from_elements(
+                    suffix,
+                    prefix,
+                )
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!("invalid account-id in note storage: {error}"),
+                    )
+                })
+        }
+    }
+    impl __MidenNoteEncode
+    for ::miden_note_bindings::__private::miden_protocol::asset::AssetAmount {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            writer
+                .write(::miden_note_bindings::__private::miden_field::Felt::from(*self));
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode
+    for ::miden_note_bindings::__private::miden_protocol::asset::AssetAmount {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            let value = reader
+                .read()
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!("failed to decode asset-amount: {error}"),
+                    )
+                })?;
+            ::miden_note_bindings::__private::miden_protocol::asset::AssetAmount::try_from(
+                    value,
+                )
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!("invalid asset-amount in note storage: {error}"),
+                    )
+                })
+        }
+    }
+    impl<T> __MidenNoteEncode for ::core::option::Option<T>
+    where
+        T: __MidenNoteEncode,
+    {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            match self {
+                None => {
+                    writer
+                        .write(::miden_note_bindings::__private::miden_field::Felt::ZERO)
+                }
+                Some(value) => {
+                    writer
+                        .write(::miden_note_bindings::__private::miden_field::Felt::ONE);
+                    value.__write_note_felts(writer)?;
+                }
+            }
+            Ok(())
+        }
+    }
+    impl<T> __MidenNoteDecode for ::core::option::Option<T>
+    where
+        T: __MidenNoteDecode,
+    {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            let tag = reader
+                .read()
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!("failed to decode option tag: {error}"),
+                    )
+                })?;
+            match tag.as_canonical_u64() {
+                0 => Ok(None),
+                1 => Ok(Some(T::__read_note_felts(reader)?)),
+                tag => {
+                    Err(
+                        ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                            format!("invalid option tag {tag}; expected 0 or 1"),
+                        ),
+                    )
+                }
+            }
+        }
+    }
+    ///Rust binding for WIT type `example:dex-schema/note-storage@1.0.0.dex-note`.
+    #[derive(
+        ::core::clone::Clone,
+        ::core::fmt::Debug,
+        ::core::cmp::PartialEq,
+        ::core::cmp::Eq,
+    )]
+    pub struct DexNote {
+        ///Value of the WIT `target` field.
+        pub target: ::miden_note_bindings::__private::miden_protocol::account::AccountId,
+        ///Value of the WIT `kind` field.
+        pub kind: OrderKind,
+    }
+    impl DexNote {
+        /// The canonical fully-qualified WIT name for this type.
+        pub const WIT_FQN: &'static str = "example:dex-schema/note-storage@1.0.0.dex-note";
+    }
+    impl __MidenNoteEncode for DexNote {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            self.target.__write_note_felts(writer)?;
+            self.kind.__write_note_felts(writer)?;
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode for DexNote {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            Ok(Self {
+                target: <::miden_note_bindings::__private::miden_protocol::account::AccountId as __MidenNoteDecode>::__read_note_felts(
+                    reader,
+                )?,
+                kind: <OrderKind as __MidenNoteDecode>::__read_note_felts(reader)?,
+            })
+        }
+    }
+    ///Selects order execution.
+    #[derive(
+        ::core::clone::Clone,
+        ::core::fmt::Debug,
+        ::core::cmp::PartialEq,
+        ::core::cmp::Eq,
+        ::miden_note_bindings::__private::miden_field_repr::ToFeltRepr,
+        ::miden_note_bindings::__private::miden_field_repr::FromFeltRepr,
+    )]
+    #[felt_repr(crate_path = "::miden_note_bindings::__private::miden_field_repr")]
+    pub enum OrderKind {
+        ///WIT `market` case.
+        Market,
+        ///WIT `limit` case.
+        Limit(LimitPrice),
+    }
+    impl OrderKind {
+        /// The canonical fully-qualified WIT name for this type.
+        pub const WIT_FQN: &'static str = "example:dex-schema/note-storage@1.0.0.order-kind";
+    }
+    impl __MidenNoteEncode for OrderKind {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            match self {
+                Self::Market => {
+                    writer
+                        .write(
+                            ::miden_note_bindings::__private::miden_field::Felt::from_u32(
+                                0u32,
+                            ),
+                        );
+                }
+                Self::Limit(value) => {
+                    writer
+                        .write(
+                            ::miden_note_bindings::__private::miden_field::Felt::from_u32(
+                                1u32,
+                            ),
+                        );
+                    value.__write_note_felts(writer)?;
+                }
+            }
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode for OrderKind {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            let tag = reader
+                .read_u32()
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!(
+                            "failed to decode {} tag: {error}", stringify!(OrderKind),
+                        ),
+                    )
+                })?;
+            match tag {
+                0u32 => Ok(Self::Market),
+                1u32 => {
+                    Ok(
+                        Self::Limit(
+                            <LimitPrice as __MidenNoteDecode>::__read_note_felts(reader)?,
+                        ),
+                    )
+                }
+                tag => {
+                    Err(
+                        ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                            format!(
+                                "invalid {} tag {tag}; expected a declaration ordinal below {}",
+                                stringify!(OrderKind), 2usize,
+                            ),
+                        ),
+                    )
+                }
+            }
+        }
+    }
+    ///A ratio used as an order limit.
+    #[derive(
+        ::core::clone::Clone,
+        ::core::fmt::Debug,
+        ::core::cmp::PartialEq,
+        ::core::cmp::Eq,
+        ::miden_note_bindings::__private::miden_field_repr::ToFeltRepr,
+        ::miden_note_bindings::__private::miden_field_repr::FromFeltRepr,
+    )]
+    #[felt_repr(crate_path = "::miden_note_bindings::__private::miden_field_repr")]
+    pub struct LimitPrice {
+        ///Value of the WIT `numerator` field.
+        pub numerator: u64,
+        ///Value of the WIT `denominator` field.
+        pub denominator: u64,
+    }
+    impl LimitPrice {
+        /// The canonical fully-qualified WIT name for this type.
+        pub const WIT_FQN: &'static str = "example:dex-schema/note-storage@1.0.0.limit-price";
+    }
+    impl __MidenNoteEncode for LimitPrice {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            self.numerator.__write_note_felts(writer)?;
+            self.denominator.__write_note_felts(writer)?;
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode for LimitPrice {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            Ok(Self {
+                numerator: <u64 as __MidenNoteDecode>::__read_note_felts(reader)?,
+                denominator: <u64 as __MidenNoteDecode>::__read_note_felts(reader)?,
+            })
+        }
+    }
+    #[doc(hidden)]
+    const __MIDEN_NOTE_STORAGE_SCHEMA_WIT: &str = "\npackage example:dex-schema@1.0.0;\n\nuse miden:base/core-types@1.0.0;\n\ninterface note-storage {\n    use core-types.{account-id};\n\n    /// A ratio used as an order limit.\n    record limit-price {\n        numerator: u64,\n        denominator: u64,\n    }\n\n    /// Selects order execution.\n    variant order-kind {\n        market,\n        limit(limit-price),\n    }\n\n    record dex-note {\n        target: account-id,\n        kind: order-kind,\n    }\n\n    type storage = dex-note;\n}\n\npackage miden:base@1.0.0 {\n    interface core-types {\n        record felt { inner: f32 }\n        record account-id { prefix: felt, suffix: felt }\n    }\n}\n";
+    /// Returns the resolved schema, which is parsed once for the whole process.
+    #[doc(hidden)]
+    fn __miden_note_storage_schema() -> ::miden_note_bindings::__private::miden_note_schema::Result<
+        &'static ::miden_note_bindings::__private::miden_note_schema::NoteStorageSchema,
+    > {
+        static __MIDEN_NOTE_STORAGE_SCHEMA: ::std::sync::OnceLock<
+            ::miden_note_bindings::__private::miden_note_schema::Result<
+                ::miden_note_bindings::__private::miden_note_schema::NoteStorageSchema,
+            >,
+        > = ::std::sync::OnceLock::new();
+        __MIDEN_NOTE_STORAGE_SCHEMA
+            .get_or_init(|| {
+                ::miden_note_bindings::__private::miden_note_schema::NoteStorageSchema::from_wit_text(
+                    __MIDEN_NOTE_STORAGE_SCHEMA_WIT,
+                )
+            })
+            .as_ref()
+            .map_err(::core::clone::Clone::clone)
+    }
+    impl DexNote {
+        /// Encodes this typed value as note storage in WIT declaration order.
+        pub fn to_note_storage(
+            &self,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<
+            ::miden_note_bindings::__private::miden_note_schema::NoteStorage,
+        > {
+            let mut felts = ::std::vec::Vec::new();
+            self.__write_note_felts(
+                &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter::new(
+                    &mut felts,
+                ),
+            )?;
+            ::miden_note_bindings::__private::miden_note_schema::NoteStorage::new(felts)
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!("failed to create note storage: {error}"),
+                    )
+                })
+        }
+        /// Decodes this typed value from complete note storage.
+        pub fn from_note_storage(
+            storage: &::miden_note_bindings::__private::miden_note_schema::NoteStorage,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            let mut reader = ::miden_note_bindings::__private::miden_field_repr::FeltReader::new(
+                storage.items(),
+            );
+            let value = Self::__read_note_felts(&mut reader)?;
+            reader
+                .ensure_eof()
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!("note storage has trailing data: {error}"),
+                    )
+                })?;
+            Ok(value)
+        }
+        /// Builds a typed value with a caller-provided codec registry.
+        pub fn from_str_values_with(
+            values: &::std::collections::BTreeMap<
+                ::std::string::String,
+                ::std::string::String,
+            >,
+            codecs: &::miden_note_bindings::__private::miden_note_schema::CodecRegistry,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            let schema = __miden_note_storage_schema()?;
+            let mut builder = schema.builder_with_registry(codecs);
+            for (path, value) in values {
+                builder = builder.set(path, value)?;
+            }
+            let storage = builder.build()?;
+            Self::from_note_storage(&storage)
+        }
+        /// Builds a typed value with the standard codec registry.
+        pub fn from_str_values(
+            values: &::std::collections::BTreeMap<
+                ::std::string::String,
+                ::std::string::String,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            let codecs = ::miden_note_bindings::__private::miden_note_schema::CodecRegistry::with_standard_codecs();
+            Self::from_str_values_with(values, &codecs)
+        }
+        /// Validates this value with structural rules and caller-provided codecs.
+        pub fn validate_with(
+            &self,
+            codecs: &::miden_note_bindings::__private::miden_note_schema::CodecRegistry,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            let storage = self.to_note_storage()?;
+            __miden_note_storage_schema()?.decode_with_registry(&storage, codecs)?;
+            Ok(())
+        }
+        /// Validates this value with the standard codec registry.
+        pub fn validate(
+            &self,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            let codecs = ::miden_note_bindings::__private::miden_note_schema::CodecRegistry::with_standard_codecs();
+            self.validate_with(&codecs)
+        }
+        /// Displays this value with caller-provided codecs and structural fallbacks.
+        pub fn display_with(
+            &self,
+            codecs: &::miden_note_bindings::__private::miden_note_schema::CodecRegistry,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<
+            ::std::string::String,
+        > {
+            let storage = self.to_note_storage()?;
+            let decoded = __miden_note_storage_schema()?
+                .decode_with_registry(&storage, codecs)?;
+            Ok(decoded.to_string())
+        }
+        /// Displays this value with standard codecs and structural fallbacks.
+        pub fn display(
+            &self,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<
+            ::std::string::String,
+        > {
+            let codecs = ::miden_note_bindings::__private::miden_note_schema::CodecRegistry::with_standard_codecs();
+            self.display_with(&codecs)
+        }
+    }
+}
+pub use __miden_note_bindings_a3280bdaca3ec21e::{DexNote, OrderKind, LimitPrice};
diff --git a/sdk/note-bindings/macros/expected/p2id.rs b/sdk/note-bindings/macros/expected/p2id.rs
new file mode 100644
index 0000000000..eac74f37ef
--- /dev/null
+++ b/sdk/note-bindings/macros/expected/p2id.rs
@@ -0,0 +1,515 @@
+#[doc(hidden)]
+mod __miden_note_bindings_f74ea5e7a6e77b2d {
+    #[doc(hidden)]
+    trait __MidenNoteEncode {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()>;
+    }
+    #[doc(hidden)]
+    trait __MidenNoteDecode: ::core::marker::Sized {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self>;
+    }
+    impl __MidenNoteEncode for u64 {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            ::miden_note_bindings::__private::miden_field_repr::ToFeltRepr::write_felt_repr(
+                self,
+                writer,
+            );
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode for u64 {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            ::miden_note_bindings::__private::miden_field_repr::FromFeltRepr::from_felt_repr(
+                    reader,
+                )
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!(
+                            "failed to decode {} from note storage: {error}",
+                            stringify!(u64),
+                        ),
+                    )
+                })
+        }
+    }
+    impl __MidenNoteEncode for u32 {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            ::miden_note_bindings::__private::miden_field_repr::ToFeltRepr::write_felt_repr(
+                self,
+                writer,
+            );
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode for u32 {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            ::miden_note_bindings::__private::miden_field_repr::FromFeltRepr::from_felt_repr(
+                    reader,
+                )
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!(
+                            "failed to decode {} from note storage: {error}",
+                            stringify!(u32),
+                        ),
+                    )
+                })
+        }
+    }
+    impl __MidenNoteEncode for u8 {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            ::miden_note_bindings::__private::miden_field_repr::ToFeltRepr::write_felt_repr(
+                self,
+                writer,
+            );
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode for u8 {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            ::miden_note_bindings::__private::miden_field_repr::FromFeltRepr::from_felt_repr(
+                    reader,
+                )
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!(
+                            "failed to decode {} from note storage: {error}",
+                            stringify!(u8),
+                        ),
+                    )
+                })
+        }
+    }
+    impl __MidenNoteEncode for bool {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            ::miden_note_bindings::__private::miden_field_repr::ToFeltRepr::write_felt_repr(
+                self,
+                writer,
+            );
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode for bool {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            ::miden_note_bindings::__private::miden_field_repr::FromFeltRepr::from_felt_repr(
+                    reader,
+                )
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!(
+                            "failed to decode {} from note storage: {error}",
+                            stringify!(bool),
+                        ),
+                    )
+                })
+        }
+    }
+    impl __MidenNoteEncode for ::miden_note_bindings::__private::miden_field::Felt {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            ::miden_note_bindings::__private::miden_field_repr::ToFeltRepr::write_felt_repr(
+                self,
+                writer,
+            );
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode for ::miden_note_bindings::__private::miden_field::Felt {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            ::miden_note_bindings::__private::miden_field_repr::FromFeltRepr::from_felt_repr(
+                    reader,
+                )
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!(
+                            "failed to decode {} from note storage: {error}",
+                            stringify!(::miden_note_bindings::__private::miden_field::Felt),
+                        ),
+                    )
+                })
+        }
+    }
+    impl __MidenNoteEncode for ::miden_note_bindings::__private::miden_field::Word {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            ::miden_note_bindings::__private::miden_field_repr::ToFeltRepr::write_felt_repr(
+                self,
+                writer,
+            );
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode for ::miden_note_bindings::__private::miden_field::Word {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            ::miden_note_bindings::__private::miden_field_repr::FromFeltRepr::from_felt_repr(
+                    reader,
+                )
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!(
+                            "failed to decode {} from note storage: {error}",
+                            stringify!(::miden_note_bindings::__private::miden_field::Word),
+                        ),
+                    )
+                })
+        }
+    }
+    impl __MidenNoteEncode
+    for ::miden_note_bindings::__private::miden_protocol::account::AccountId {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            writer.write(self.prefix().as_felt());
+            writer.write(self.suffix());
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode
+    for ::miden_note_bindings::__private::miden_protocol::account::AccountId {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            let prefix = reader
+                .read()
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!("failed to decode account-id prefix: {error}"),
+                    )
+                })?;
+            let suffix = reader
+                .read()
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!("failed to decode account-id suffix: {error}"),
+                    )
+                })?;
+            ::miden_note_bindings::__private::miden_protocol::account::AccountId::try_from_elements(
+                    suffix,
+                    prefix,
+                )
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!("invalid account-id in note storage: {error}"),
+                    )
+                })
+        }
+    }
+    impl __MidenNoteEncode
+    for ::miden_note_bindings::__private::miden_protocol::asset::AssetAmount {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            writer
+                .write(::miden_note_bindings::__private::miden_field::Felt::from(*self));
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode
+    for ::miden_note_bindings::__private::miden_protocol::asset::AssetAmount {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            let value = reader
+                .read()
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!("failed to decode asset-amount: {error}"),
+                    )
+                })?;
+            ::miden_note_bindings::__private::miden_protocol::asset::AssetAmount::try_from(
+                    value,
+                )
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!("invalid asset-amount in note storage: {error}"),
+                    )
+                })
+        }
+    }
+    impl<T> __MidenNoteEncode for ::core::option::Option<T>
+    where
+        T: __MidenNoteEncode,
+    {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            match self {
+                None => {
+                    writer
+                        .write(::miden_note_bindings::__private::miden_field::Felt::ZERO)
+                }
+                Some(value) => {
+                    writer
+                        .write(::miden_note_bindings::__private::miden_field::Felt::ONE);
+                    value.__write_note_felts(writer)?;
+                }
+            }
+            Ok(())
+        }
+    }
+    impl<T> __MidenNoteDecode for ::core::option::Option<T>
+    where
+        T: __MidenNoteDecode,
+    {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            let tag = reader
+                .read()
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!("failed to decode option tag: {error}"),
+                    )
+                })?;
+            match tag.as_canonical_u64() {
+                0 => Ok(None),
+                1 => Ok(Some(T::__read_note_felts(reader)?)),
+                tag => {
+                    Err(
+                        ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                            format!("invalid option tag {tag}; expected 0 or 1"),
+                        ),
+                    )
+                }
+            }
+        }
+    }
+    ///Rust binding for WIT type `example:p2id-schema/note-storage@1.0.0.p2id-note`.
+    #[derive(
+        ::core::clone::Clone,
+        ::core::fmt::Debug,
+        ::core::cmp::PartialEq,
+        ::core::cmp::Eq,
+    )]
+    pub struct P2idNote {
+        ///Value of the WIT `target-account-id` field.
+        pub target_account_id: ::miden_note_bindings::__private::miden_protocol::account::AccountId,
+    }
+    impl P2idNote {
+        /// The canonical fully-qualified WIT name for this type.
+        pub const WIT_FQN: &'static str = "example:p2id-schema/note-storage@1.0.0.p2id-note";
+    }
+    impl __MidenNoteEncode for P2idNote {
+        fn __write_note_felts(
+            &self,
+            writer: &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            self.target_account_id.__write_note_felts(writer)?;
+            Ok(())
+        }
+    }
+    impl __MidenNoteDecode for P2idNote {
+        fn __read_note_felts(
+            reader: &mut ::miden_note_bindings::__private::miden_field_repr::FeltReader<
+                '_,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            Ok(Self {
+                target_account_id: <::miden_note_bindings::__private::miden_protocol::account::AccountId as __MidenNoteDecode>::__read_note_felts(
+                    reader,
+                )?,
+            })
+        }
+    }
+    #[doc(hidden)]
+    const __MIDEN_NOTE_STORAGE_SCHEMA_WIT: &str = "\npackage example:p2id-schema@1.0.0;\n\nuse miden:base/core-types@1.0.0;\n\ninterface note-storage {\n    use core-types.{account-id};\n\n    record p2id-note {\n        target-account-id: account-id,\n    }\n\n    type storage = p2id-note;\n}\n\npackage miden:base@1.0.0 {\n    interface core-types {\n        record felt { inner: f32 }\n        record account-id { prefix: felt, suffix: felt }\n    }\n}\n";
+    /// Returns the resolved schema, which is parsed once for the whole process.
+    #[doc(hidden)]
+    fn __miden_note_storage_schema() -> ::miden_note_bindings::__private::miden_note_schema::Result<
+        &'static ::miden_note_bindings::__private::miden_note_schema::NoteStorageSchema,
+    > {
+        static __MIDEN_NOTE_STORAGE_SCHEMA: ::std::sync::OnceLock<
+            ::miden_note_bindings::__private::miden_note_schema::Result<
+                ::miden_note_bindings::__private::miden_note_schema::NoteStorageSchema,
+            >,
+        > = ::std::sync::OnceLock::new();
+        __MIDEN_NOTE_STORAGE_SCHEMA
+            .get_or_init(|| {
+                ::miden_note_bindings::__private::miden_note_schema::NoteStorageSchema::from_wit_text(
+                    __MIDEN_NOTE_STORAGE_SCHEMA_WIT,
+                )
+            })
+            .as_ref()
+            .map_err(::core::clone::Clone::clone)
+    }
+    impl P2idNote {
+        /// Encodes this typed value as note storage in WIT declaration order.
+        pub fn to_note_storage(
+            &self,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<
+            ::miden_note_bindings::__private::miden_note_schema::NoteStorage,
+        > {
+            let mut felts = ::std::vec::Vec::new();
+            self.__write_note_felts(
+                &mut ::miden_note_bindings::__private::miden_field_repr::FeltWriter::new(
+                    &mut felts,
+                ),
+            )?;
+            ::miden_note_bindings::__private::miden_note_schema::NoteStorage::new(felts)
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!("failed to create note storage: {error}"),
+                    )
+                })
+        }
+        /// Decodes this typed value from complete note storage.
+        pub fn from_note_storage(
+            storage: &::miden_note_bindings::__private::miden_note_schema::NoteStorage,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            let mut reader = ::miden_note_bindings::__private::miden_field_repr::FeltReader::new(
+                storage.items(),
+            );
+            let value = Self::__read_note_felts(&mut reader)?;
+            reader
+                .ensure_eof()
+                .map_err(|error| {
+                    ::miden_note_bindings::__private::miden_note_schema::Error::new(
+                        format!("note storage has trailing data: {error}"),
+                    )
+                })?;
+            Ok(value)
+        }
+        /// Builds a typed value with a caller-provided codec registry.
+        pub fn from_str_values_with(
+            values: &::std::collections::BTreeMap<
+                ::std::string::String,
+                ::std::string::String,
+            >,
+            codecs: &::miden_note_bindings::__private::miden_note_schema::CodecRegistry,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            let schema = __miden_note_storage_schema()?;
+            let mut builder = schema.builder_with_registry(codecs);
+            for (path, value) in values {
+                builder = builder.set(path, value)?;
+            }
+            let storage = builder.build()?;
+            Self::from_note_storage(&storage)
+        }
+        /// Builds a typed value with the standard codec registry.
+        pub fn from_str_values(
+            values: &::std::collections::BTreeMap<
+                ::std::string::String,
+                ::std::string::String,
+            >,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<Self> {
+            let codecs = ::miden_note_bindings::__private::miden_note_schema::CodecRegistry::with_standard_codecs();
+            Self::from_str_values_with(values, &codecs)
+        }
+        /// Validates this value with structural rules and caller-provided codecs.
+        pub fn validate_with(
+            &self,
+            codecs: &::miden_note_bindings::__private::miden_note_schema::CodecRegistry,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            let storage = self.to_note_storage()?;
+            __miden_note_storage_schema()?.decode_with_registry(&storage, codecs)?;
+            Ok(())
+        }
+        /// Validates this value with the standard codec registry.
+        pub fn validate(
+            &self,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<()> {
+            let codecs = ::miden_note_bindings::__private::miden_note_schema::CodecRegistry::with_standard_codecs();
+            self.validate_with(&codecs)
+        }
+        /// Displays this value with caller-provided codecs and structural fallbacks.
+        pub fn display_with(
+            &self,
+            codecs: &::miden_note_bindings::__private::miden_note_schema::CodecRegistry,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<
+            ::std::string::String,
+        > {
+            let storage = self.to_note_storage()?;
+            let decoded = __miden_note_storage_schema()?
+                .decode_with_registry(&storage, codecs)?;
+            Ok(decoded.to_string())
+        }
+        /// Displays this value with standard codecs and structural fallbacks.
+        pub fn display(
+            &self,
+        ) -> ::miden_note_bindings::__private::miden_note_schema::Result<
+            ::std::string::String,
+        > {
+            let codecs = ::miden_note_bindings::__private::miden_note_schema::CodecRegistry::with_standard_codecs();
+            self.display_with(&codecs)
+        }
+    }
+}
+pub use __miden_note_bindings_f74ea5e7a6e77b2d::P2idNote;
diff --git a/sdk/note-bindings/macros/src/lib.rs b/sdk/note-bindings/macros/src/lib.rs
new file mode 100644
index 0000000000..c0838b96ad
--- /dev/null
+++ b/sdk/note-bindings/macros/src/lib.rs
@@ -0,0 +1,262 @@
+//! Procedural macros that generate typed host bindings for Miden note storage.
+
+#![deny(missing_docs)]
+
+extern crate proc_macro;
+
+use miden_note_schema::{NotePackageArtifact, NotePackageResolver, NoteStorageSchema};
+use miden_note_schema_codegen::{RuntimePaths, generate_host_types};
+use proc_macro::TokenStream;
+use proc_macro_crate::{FoundCrate, crate_name};
+use proc_macro2::{Span, TokenStream as TokenStream2};
+use quote::{format_ident, quote};
+use syn::{LitStr, parse_macro_input};
+
+/// Generates typed bindings from the package built by a Miden project.
+///
+/// The project path is relative to `CARGO_MANIFEST_DIR`. Build the note project with
+/// `cargo miden build` before compiling the consumer.
+#[proc_macro]
+pub fn from_project(input: TokenStream) -> TokenStream {
+    let input = parse_macro_input!(input as LitStr);
+    expand_from_project(&input)
+        .unwrap_or_else(syn::Error::into_compile_error)
+        .into()
+}
+
+/// Generates typed bindings from one exact Miden package path.
+///
+/// A relative path is resolved against `CARGO_MANIFEST_DIR`.
+#[proc_macro]
+pub fn from_package(input: TokenStream) -> TokenStream {
+    let input = parse_macro_input!(input as LitStr);
+    expand_from_package(&input)
+        .unwrap_or_else(syn::Error::into_compile_error)
+        .into()
+}
+
+/// Generates typed bindings from WIT text for internal tests.
+#[doc(hidden)]
+#[proc_macro]
+pub fn from_wit_text(input: TokenStream) -> TokenStream {
+    let input = parse_macro_input!(input as LitStr);
+    expand_from_wit_text(&input)
+        .unwrap_or_else(syn::Error::into_compile_error)
+        .into()
+}
+
+/// Expands a project-relative note binding request.
+fn expand_from_project(input: &LitStr) -> syn::Result<TokenStream2> {
+    let artifact = NotePackageResolver::new("miden-note-bindings")
+        .from_project(&input.value())
+        .map_err(|error| syn::Error::new(input.span(), error.to_string()))?;
+    expand_package_artifact(&artifact, input.span())
+}
+
+/// Expands an exact package binding request.
+fn expand_from_package(input: &LitStr) -> syn::Result<TokenStream2> {
+    let artifact = NotePackageResolver::new("miden-note-bindings")
+        .from_package(&input.value())
+        .map_err(|error| syn::Error::new(input.span(), error.to_string()))?;
+    expand_package_artifact(&artifact, input.span())
+}
+
+/// Expands bindings from a loaded package and tracks the artifact as a macro input.
+fn expand_package_artifact(
+    artifact: &NotePackageArtifact,
+    span: Span,
+) -> syn::Result<TokenStream2> {
+    let scope_key = artifact.path().to_string_lossy();
+    let bindings = expand_schema(artifact.schema(), span, &scope_key)?;
+    let tracked_path = artifact.path().to_string_lossy();
+    let tracked_manifests = artifact
+        .tracked_inputs()
+        .iter()
+        .map(|path| path.to_string_lossy().into_owned())
+        .collect::<Vec<_>>();
+    let package_cache_env = midenc_frontend_wasm_metadata::package_cache::PACKAGE_CACHE_ENV;
+    Ok(quote! {
+        // These constants exist only to register the package file, the manifests that named it,
+        // and the cache path as proc-macro rebuild inputs.
+        const _: &[u8] = ::core::include_bytes!(#tracked_path);
+        #(const _: &[u8] = ::core::include_bytes!(#tracked_manifests);)*
+        const _: ::core::option::Option<&str> = ::core::option_env!(#package_cache_env);
+        #bindings
+    })
+}
+
+/// Expands bindings from a WIT string literal.
+fn expand_from_wit_text(input: &LitStr) -> syn::Result<TokenStream2> {
+    let schema = NoteStorageSchema::from_wit_text(&input.value())
+        .map_err(|error| syn::Error::new(input.span(), error.to_string()))?;
+    expand_schema(&schema, input.span(), &input.value())
+}
+
+/// Adds the typed consumer API to shared generated host types.
+fn expand_schema(
+    schema: &NoteStorageSchema,
+    span: Span,
+    scope_key: &str,
+) -> syn::Result<TokenStream2> {
+    let facade_path = binding_facade();
+    let runtime_paths = RuntimePaths::through_facade(quote!(#facade_path));
+    let generated = generate_host_types(schema, &runtime_paths)
+        .map_err(|error| syn::Error::new(span, error.to_string()))?;
+    let type_tokens = generated.tokens();
+    let root_ident = generated.root_ident();
+    let type_idents = generated.type_idents();
+    let wit_text = schema.wit_text();
+    let scope_ident = format_ident!("__miden_note_bindings_{:016x}", stable_hash(scope_key));
+    let runtime = quote!(#facade_path::__private);
+
+    Ok(quote! {
+        #[doc(hidden)]
+        mod #scope_ident {
+            #type_tokens
+
+            #[doc(hidden)]
+            const __MIDEN_NOTE_STORAGE_SCHEMA_WIT: &str = #wit_text;
+
+            /// Returns the resolved schema, which is parsed once for the whole process.
+            #[doc(hidden)]
+            fn __miden_note_storage_schema() -> #runtime::miden_note_schema::Result<
+                &'static #runtime::miden_note_schema::NoteStorageSchema,
+            > {
+                static __MIDEN_NOTE_STORAGE_SCHEMA: ::std::sync::OnceLock<
+                    #runtime::miden_note_schema::Result<
+                        #runtime::miden_note_schema::NoteStorageSchema,
+                    >,
+                > = ::std::sync::OnceLock::new();
+                __MIDEN_NOTE_STORAGE_SCHEMA
+                    .get_or_init(|| {
+                        #runtime::miden_note_schema::NoteStorageSchema::from_wit_text(
+                            __MIDEN_NOTE_STORAGE_SCHEMA_WIT,
+                        )
+                    })
+                    .as_ref()
+                    .map_err(::core::clone::Clone::clone)
+            }
+
+            impl #root_ident {
+                /// Encodes this typed value as note storage in WIT declaration order.
+                pub fn to_note_storage(
+                    &self,
+                ) -> #runtime::miden_note_schema::Result<#runtime::miden_note_schema::NoteStorage> {
+                    let mut felts = ::std::vec::Vec::new();
+                    self.__write_note_felts(
+                        &mut #runtime::miden_field_repr::FeltWriter::new(&mut felts),
+                    )?;
+                    #runtime::miden_note_schema::NoteStorage::new(felts).map_err(|error| {
+                        #runtime::miden_note_schema::Error::new(format!(
+                            "failed to create note storage: {error}"
+                        ))
+                    })
+                }
+
+                /// Decodes this typed value from complete note storage.
+                pub fn from_note_storage(
+                    storage: &#runtime::miden_note_schema::NoteStorage,
+                ) -> #runtime::miden_note_schema::Result<Self> {
+                    let mut reader = #runtime::miden_field_repr::FeltReader::new(storage.items());
+                    let value = Self::__read_note_felts(&mut reader)?;
+                    reader.ensure_eof().map_err(|error| {
+                        #runtime::miden_note_schema::Error::new(format!(
+                            "note storage has trailing data: {error}"
+                        ))
+                    })?;
+                    Ok(value)
+                }
+
+                /// Builds a typed value with a caller-provided codec registry.
+                pub fn from_str_values_with(
+                    values: &::std::collections::BTreeMap<
+                        ::std::string::String,
+                        ::std::string::String,
+                    >,
+                    codecs: &#runtime::miden_note_schema::CodecRegistry,
+                ) -> #runtime::miden_note_schema::Result<Self> {
+                    let schema = __miden_note_storage_schema()?;
+                    let mut builder = schema.builder_with_registry(codecs);
+                    for (path, value) in values {
+                        builder = builder.set(path, value)?;
+                    }
+                    let storage = builder.build()?;
+                    Self::from_note_storage(&storage)
+                }
+
+                /// Builds a typed value with the standard codec registry.
+                pub fn from_str_values(
+                    values: &::std::collections::BTreeMap<
+                        ::std::string::String,
+                        ::std::string::String,
+                    >,
+                ) -> #runtime::miden_note_schema::Result<Self> {
+                    let codecs =
+                        #runtime::miden_note_schema::CodecRegistry::with_standard_codecs();
+                    Self::from_str_values_with(values, &codecs)
+                }
+
+                /// Validates this value with structural rules and caller-provided codecs.
+                pub fn validate_with(
+                    &self,
+                    codecs: &#runtime::miden_note_schema::CodecRegistry,
+                ) -> #runtime::miden_note_schema::Result<()> {
+                    let storage = self.to_note_storage()?;
+                    __miden_note_storage_schema()?.decode_with_registry(&storage, codecs)?;
+                    Ok(())
+                }
+
+                /// Validates this value with the standard codec registry.
+                pub fn validate(&self) -> #runtime::miden_note_schema::Result<()> {
+                    let codecs =
+                        #runtime::miden_note_schema::CodecRegistry::with_standard_codecs();
+                    self.validate_with(&codecs)
+                }
+
+                /// Displays this value with caller-provided codecs and structural fallbacks.
+                pub fn display_with(
+                    &self,
+                    codecs: &#runtime::miden_note_schema::CodecRegistry,
+                ) -> #runtime::miden_note_schema::Result<::std::string::String> {
+                    let storage = self.to_note_storage()?;
+                    let decoded =
+                        __miden_note_storage_schema()?.decode_with_registry(&storage, codecs)?;
+                    Ok(decoded.to_string())
+                }
+
+                /// Displays this value with standard codecs and structural fallbacks.
+                pub fn display(
+                    &self,
+                ) -> #runtime::miden_note_schema::Result<::std::string::String> {
+                    let codecs =
+                        #runtime::miden_note_schema::CodecRegistry::with_standard_codecs();
+                    self.display_with(&codecs)
+                }
+            }
+        }
+
+        pub use #scope_ident::{#(#type_idents),*};
+    })
+}
+
+/// Resolves the bindings facade path in the consuming crate.
+fn binding_facade() -> syn::Path {
+    match crate_name("miden-note-bindings") {
+        Ok(FoundCrate::Itself) => syn::parse_quote!(crate),
+        Ok(FoundCrate::Name(name)) => {
+            let ident = syn::Ident::new(&name, Span::call_site());
+            syn::parse_quote!(::#ident)
+        }
+        Err(_) => syn::parse_quote!(::miden_note_bindings),
+    }
+}
+
+/// Returns a deterministic FNV-1a scope suffix for one macro input.
+fn stable_hash(value: &str) -> u64 {
+    value.bytes().fold(0xcbf2_9ce4_8422_2325, |hash, byte| {
+        (hash ^ u64::from(byte)).wrapping_mul(0x0000_0100_0000_01b3)
+    })
+}
+
+#[cfg(test)]
+mod tests;
diff --git a/sdk/note-bindings/macros/src/tests.rs b/sdk/note-bindings/macros/src/tests.rs
new file mode 100644
index 0000000000..af56307522
--- /dev/null
+++ b/sdk/note-bindings/macros/src/tests.rs
@@ -0,0 +1,83 @@
+//! Tests for macro expansion.
+
+use midenc_expect_test::expect_file;
+use syn::LitStr;
+
+use crate::expand_from_wit_text;
+
+const P2ID_SCHEMA: &str = r#"
+package example:p2id-schema@1.0.0;
+
+use miden:base/core-types@1.0.0;
+
+interface note-storage {
+    use core-types.{account-id};
+
+    record p2id-note {
+        target-account-id: account-id,
+    }
+
+    type storage = p2id-note;
+}
+
+package miden:base@1.0.0 {
+    interface core-types {
+        record felt { inner: f32 }
+        record account-id { prefix: felt, suffix: felt }
+    }
+}
+"#;
+
+const CUSTOM_SCHEMA: &str = r#"
+package example:dex-schema@1.0.0;
+
+use miden:base/core-types@1.0.0;
+
+interface note-storage {
+    use core-types.{account-id};
+
+    /// A ratio used as an order limit.
+    record limit-price {
+        numerator: u64,
+        denominator: u64,
+    }
+
+    /// Selects order execution.
+    variant order-kind {
+        market,
+        limit(limit-price),
+    }
+
+    record dex-note {
+        target: account-id,
+        kind: order-kind,
+    }
+
+    type storage = dex-note;
+}
+
+package miden:base@1.0.0 {
+    interface core-types {
+        record felt { inner: f32 }
+        record account-id { prefix: felt, suffix: felt }
+    }
+}
+"#;
+
+/// Formats one WIT-text macro expansion as Rust source.
+fn expand(wit: &str) -> String {
+    let literal = LitStr::new(wit, proc_macro2::Span::call_site());
+    let tokens = expand_from_wit_text(&literal).unwrap();
+    let file: syn::File = syn::parse2(tokens).unwrap();
+    prettyplease::unparse(&file)
+}
+
+#[test]
+fn expands_p2id_schema_golden() {
+    expect_file!["../expected/p2id.rs"].assert_eq(&expand(P2ID_SCHEMA));
+}
+
+#[test]
+fn expands_custom_schema_golden() {
+    expect_file!["../expected/custom.rs"].assert_eq(&expand(CUSTOM_SCHEMA));
+}
diff --git a/sdk/note-bindings/src/lib.rs b/sdk/note-bindings/src/lib.rs
new file mode 100644
index 0000000000..5487f6ada7
--- /dev/null
+++ b/sdk/note-bindings/src/lib.rs
@@ -0,0 +1,29 @@
+//! Typed host bindings for Miden note storage schemas.
+//!
+//! Generate bindings from a built package, and then use the generated storage type.
+//!
+//! ```ignore
+//! miden_note_bindings::from_package!("../p2id-note/target/miden/release/p2id.masp");
+//!
+//! fn decode(storage: &miden_note_bindings::NoteStorage) -> P2idNote {
+//!     P2idNote::from_note_storage(storage).unwrap()
+//! }
+//! ```
+
+#![deny(missing_docs)]
+
+pub use miden_field_repr::*;
+#[doc(hidden)]
+pub use miden_note_bindings_macros::from_wit_text;
+pub use miden_note_bindings_macros::{from_package, from_project};
+pub use miden_note_schema::{CodecRegistry, Error, NoteStorage, Result};
+pub use miden_protocol::{account, address, asset};
+
+/// Support used by generated typed bindings.
+#[doc(hidden)]
+pub mod __private {
+    pub use miden_field;
+    pub use miden_field_repr;
+    pub use miden_note_schema;
+    pub use miden_protocol;
+}
diff --git a/sdk/note-bindings/tests/generated_custom.rs b/sdk/note-bindings/tests/generated_custom.rs
new file mode 100644
index 0000000000..103c13423b
--- /dev/null
+++ b/sdk/note-bindings/tests/generated_custom.rs
@@ -0,0 +1,134 @@
+//! Type-checks and exercises bindings generated from custom WIT types.
+
+use std::collections::BTreeMap;
+
+use miden_note_bindings::{CodecRegistry, Felt, FromFeltRepr, ToFeltRepr};
+
+miden_note_bindings::from_wit_text!(
+    r#"
+package example:custom-schema@1.0.0;
+
+interface note-storage {
+    record limit-price {
+        numerator: u64,
+        denominator: u64,
+    }
+
+    variant order-kind {
+        market,
+        limit(limit-price),
+    }
+
+    record custom-note {
+        price: limit-price,
+        kind: order-kind,
+    }
+
+    type storage = custom-note;
+}
+"#
+);
+
+/// Requires a type to carry both native felt-repr traits.
+fn assert_native_felt_repr<T: ToFeltRepr + FromFeltRepr>() {}
+
+#[test]
+fn custom_types_have_native_repr_and_typed_round_trips() {
+    assert_native_felt_repr::<LimitPrice>();
+    assert_native_felt_repr::<OrderKind>();
+    assert_native_felt_repr::<CustomNote>();
+
+    let value = CustomNote {
+        price: LimitPrice {
+            numerator: 3,
+            denominator: 2,
+        },
+        kind: OrderKind::Limit(LimitPrice {
+            numerator: 5,
+            denominator: 4,
+        }),
+    };
+    let storage = value.to_note_storage().unwrap();
+    assert_eq!(
+        storage.items(),
+        &[
+            Felt::from_u32(3),
+            Felt::ZERO,
+            Felt::from_u32(2),
+            Felt::ZERO,
+            Felt::ONE,
+            Felt::from_u32(5),
+            Felt::ZERO,
+            Felt::from_u32(4),
+            Felt::ZERO,
+        ]
+    );
+    assert_eq!(CustomNote::from_note_storage(&storage).unwrap(), value);
+
+    let codecs = CodecRegistry::default();
+    value.validate_with(&codecs).unwrap();
+    assert_eq!(
+        value.display_with(&codecs).unwrap(),
+        "{price: {numerator: 3, denominator: 2}, kind: limit({numerator: 5, denominator: 4})}"
+    );
+    value.validate().unwrap();
+    assert_eq!(value.display().unwrap(), value.display_with(&codecs).unwrap());
+}
+
+#[test]
+fn custom_record_string_paths_use_the_registry_parameter() {
+    let mut values = BTreeMap::new();
+    values.insert("price.numerator".to_owned(), "7".to_owned());
+    values.insert("price.denominator".to_owned(), "6".to_owned());
+    values.insert("kind".to_owned(), "market".to_owned());
+
+    let value = CustomNote::from_str_values_with(&values, &CodecRegistry::default()).unwrap();
+    assert_eq!(
+        value,
+        CustomNote {
+            price: LimitPrice {
+                numerator: 7,
+                denominator: 6,
+            },
+            kind: OrderKind::Market,
+        }
+    );
+}
+
+/// Bindings whose WIT type and field names collide with Rust prelude names.
+///
+/// The generated items shadow the prelude inside the generated module, so the test only compiles
+/// when every prelude name in the generated code is fully qualified.
+mod prelude_names {
+    miden_note_bindings::from_wit_text!(
+        r#"
+package example:prelude-schema@1.0.0;
+
+interface note-storage {
+    record %option {
+        %string: u64,
+    }
+
+    record %vec {
+        %string: u32,
+        %result: %option,
+        maybe: option<u32>,
+    }
+
+    type storage = %vec;
+}
+"#
+    );
+
+    #[test]
+    fn prelude_named_types_round_trip() {
+        let value = Vec {
+            string: 9,
+            result: Option { string: 4 },
+            maybe: ::core::option::Option::Some(1),
+        };
+        let storage = value.to_note_storage().unwrap();
+        assert_eq!(Vec::from_note_storage(&storage).unwrap(), value);
+        value.validate().unwrap();
+    }
+}
diff --git a/sdk/note-bindings/tests/p2id_consumer.rs b/sdk/note-bindings/tests/p2id_consumer.rs
new file mode 100644
index 0000000000..cd9d52d2e4
--- /dev/null
+++ b/sdk/note-bindings/tests/p2id_consumer.rs
@@ -0,0 +1,193 @@
+//! End-to-end test for package discovery and generated p2id consumer bindings.
+
+use std::{env, fs, path::Path, process::Command};
+
+use miden_mast_package::Section;
+use midenc_frontend_wasm_metadata::package_note_storage_schema_section_id;
+use midenc_integration_test_support::{
+    compile_project, scrub_nested_cargo_env, workspace_root, write_masp_file_atomic,
+};
+
+/// Returns the native rustc host target.
+fn host_target() -> String {
+    let output = Command::new(env::var_os("RUSTC").unwrap_or_else(|| "rustc".into()))
+        .arg("-vV")
+        .output()
+        .expect("failed to query the rustc host target");
+    assert!(output.status.success(), "rustc -vV failed");
+    String::from_utf8(output.stdout)
+        .unwrap()
+        .lines()
+        .find_map(|line| line.strip_prefix("host: "))
+        .expect("rustc -vV did not report a host target")
+        .to_owned()
+}
+
+/// Copies the workspace patch table into an isolated consumer manifest.
+///
+/// The consumer crate must resolve the same patched dependencies as the workspace. A
+/// workspace without a patch table has nothing to copy, and the function returns an empty
+/// string.
+fn workspace_patch_section(workspace: &Path) -> String {
+    let manifest = fs::read_to_string(workspace.join("Cargo.toml")).unwrap();
+    let mut section = String::new();
+    let mut copying = false;
+    for line in manifest.lines() {
+        let trimmed = line.trim();
+        if trimmed == "[patch.crates-io]" {
+            copying = true;
+        } else if copying && trimmed.starts_with('[') {
+            break;
+        }
+        if copying {
+            section.push_str(line);
+            section.push('\n');
+        }
+    }
+    section
+}
+
+#[test]
+fn generated_p2id_bindings_compile_and_run_in_a_consumer_crate() {
+    let workspace = workspace_root();
+    let examples = workspace.join("examples");
+    let wallet_dir = examples.join("basic-wallet");
+    let wallet = compile_project(&wallet_dir);
+    write_masp_file_atomic(&wallet, wallet_dir.join("target/miden/release"))
+        .expect("failed to persist the basic-wallet dependency package");
+
+    let p2id_dir = examples.join("p2id-note");
+    let p2id = compile_project(&p2id_dir);
+    let package_dir = p2id_dir.join("target/miden/release");
+    write_masp_file_atomic(&p2id, &package_dir).expect("failed to persist the p2id package");
+    let package_path = package_dir.join("p2id.masp");
+
+    let temp = tempfile::tempdir().unwrap();
+    fs::create_dir_all(temp.path().join("src")).unwrap();
+    // Seed the workspace lockfile so the offline build resolves to the versions that the
+    // workspace already downloaded instead of racing the registry index.
+    fs::copy(workspace.join("Cargo.lock"), temp.path().join("Cargo.lock")).unwrap();
+    let second_package_dir = temp.path().join("packages/counter");
+    fs::create_dir_all(&second_package_dir).unwrap();
+    let mut second_package = (*p2id).clone();
+    let schema_id = package_note_storage_schema_section_id();
+    second_package.sections.retain(|section| section.id != schema_id);
+    second_package.sections.push(Section::new(
+        schema_id,
+        br#"package example:counter-schema@1.0.0;
+
+interface note-storage {
+    record counter-note { value: u64 }
+    type storage = counter-note;
+}
+"#
+        .to_vec(),
+    ));
+    write_masp_file_atomic(&second_package, &second_package_dir)
+        .expect("failed to persist the second schema package");
+    let second_package_path = second_package_dir.join("p2id.masp");
+
+    let bindings_dir = workspace.join("sdk/note-bindings");
+    let patches = workspace_patch_section(&workspace);
+    fs::write(
+        temp.path().join("Cargo.toml"),
+        format!(
+            r#"[package]
+name = "note-bindings-consumer"
+version = "0.1.0"
+edition = "2024"
+
+[workspace]
+
+# Keep only file/line debug information: this project exists to prove the
+# generated bindings compile and run, and full DWARF for the native Miden
+# dependency cone costs gigabytes in the shared test build directory.
+[profile.dev]
+debug = "line-tables-only"
+
+[dependencies]
+miden-note-bindings = {{ path = {bindings_dir:?} }}
+
+{patches}
+"#,
+            bindings_dir = bindings_dir.to_string_lossy(),
+        ),
+    )
+    .unwrap();
+
+    let source = format!(
+        r#"use std::collections::BTreeMap;
+
+use miden_note_bindings::{{account::AccountId, address::NetworkId}};
+
+mod project_bindings {{
+    miden_note_bindings::from_project!({project_dir:?});
+}}
+
+mod package_bindings {{
+    miden_note_bindings::from_package!({package_path:?});
+    miden_note_bindings::from_package!({second_package_path:?});
+}}
+
+fn main() {{
+    let account_id =
+        AccountId::try_from(0xaa00_0000_0000_bc11_0000_bc00_0000_de00u128).unwrap();
+    let bech32 = account_id.to_bech32(NetworkId::Mainnet);
+    let mut values = BTreeMap::new();
+    values.insert("target_account_id".to_owned(), bech32.clone());
+
+    let typed = project_bindings::P2idNote::from_str_values(&values).unwrap();
+    assert_eq!(typed.target_account_id, account_id);
+    let storage = typed.to_note_storage().unwrap();
+    assert_eq!(
+        storage.items(),
+        &[account_id.prefix().as_felt(), account_id.suffix()],
+    );
+    typed.validate().unwrap();
+    assert_eq!(
+        typed.display().unwrap(),
+        format!("{{{{target-account-id: {{bech32}}}}}}"),
+    );
+
+    let decoded = project_bindings::P2idNote::from_note_storage(&storage).unwrap();
+    assert_eq!(decoded, typed);
+
+    let exact = package_bindings::P2idNote::from_note_storage(&storage).unwrap();
+    assert_eq!(exact.target_account_id, account_id);
+
+    let counter = package_bindings::CounterNote {{ value: 9 }};
+    let counter_storage = counter.to_note_storage().unwrap();
+    assert_eq!(counter_storage.items()[0].as_canonical_u64(), 9);
+    assert_eq!(counter_storage.items()[1].as_canonical_u64(), 0);
+}}
+"#,
+        project_dir = p2id_dir.to_string_lossy(),
+        package_path = package_path.to_string_lossy(),
+        second_package_path = second_package_path.to_string_lossy(),
+    );
+    fs::write(temp.path().join("src/main.rs"), source).unwrap();
+
+    let mut cargo = Command::new(env::var_os("CARGO").unwrap_or_else(|| "cargo".into()));
+    cargo
+        .args(["run", "--quiet", "--target"])
+        .arg(host_target())
+        .arg("--manifest-path")
+        .arg(temp.path().join("Cargo.toml"))
+        .current_dir(temp.path())
+        .env("CARGO_TARGET_DIR", workspace.join("target/note-bindings-consumer"))
+        // Share the hash-keyed intermediates with the other test builds; only the
+        // name-keyed final artifacts stay in the directory above. Convention from
+        // `tests/support`.
+        .env("CARGO_BUILD_BUILD_DIR", workspace.join("target/miden_build_cache"))
+        .env("CARGO_NET_OFFLINE", "true");
+    scrub_nested_cargo_env(&mut cargo);
+    let output = cargo
+        .output()
+        .expect("failed to spawn Cargo for the generated bindings consumer");
+    assert!(
+        output.status.success(),
+        "generated bindings consumer failed\nstdout:\n{}\nstderr:\n{}",
+        String::from_utf8_lossy(&output.stdout),
+        String::from_utf8_lossy(&output.stderr),
+    );
+}
diff --git a/sdk/note-codec/Cargo.toml b/sdk/note-codec/Cargo.toml
new file mode 100644
index 0000000000..fc5b949284
--- /dev/null
+++ b/sdk/note-codec/Cargo.toml
@@ -0,0 +1,32 @@
+[package]
+name = "miden-note-codec"
+description = "Author-side codecs for typed Miden note storage"
+version = "0.14.0"
+rust-version.workspace = true
+authors.workspace = true
+repository.workspace = true
+homepage.workspace = true
+documentation.workspace = true
+categories.workspace = true
+keywords.workspace = true
+license.workspace = true
+readme.workspace = true
+edition.workspace = true
+
+[lib]
+doctest = false
+
+[dependencies]
+miden-field.workspace = true
+miden-field-repr.workspace = true
+miden-note-codec-macros.workspace = true
+miden-note-codec-wit.workspace = true
+miden-protocol.workspace = true
+wit-bindgen = { workspace = true }
+
+[dev-dependencies]
+miden-note-schema.workspace = true
+midenc-frontend-wasm-metadata.workspace = true
+tempfile.workspace = true
+wit-component.workspace = true
+wit-parser.workspace = true
diff --git a/sdk/note-codec/macros/Cargo.toml b/sdk/note-codec/macros/Cargo.toml
new file mode 100644
index 0000000000..372b2015d4
--- /dev/null
+++ b/sdk/note-codec/macros/Cargo.toml
@@ -0,0 +1,31 @@
+[package]
+name = "miden-note-codec-macros"
+description = "Procedural macros for author-side Miden note codecs"
+version = "0.14.0"
+rust-version.workspace = true
+authors.workspace = true
+repository.workspace = true
+homepage.workspace = true
+documentation.workspace = true
+categories.workspace = true
+keywords.workspace = true
+license.workspace = true
+readme.workspace = true
+edition.workspace = true
+
+[lib]
+proc-macro = true
+doctest = false
+
+[dependencies]
+miden-note-codec-wit.workspace = true
+miden-note-schema.workspace = true
+miden-note-schema-codegen.workspace = true
+midenc-frontend-wasm-metadata.workspace = true
+proc-macro2 = { workspace = true, features = ["span-locations"] }
+proc-macro-crate = { workspace = true }
+quote.workspace = true
+syn.workspace = true
+
+[dev-dependencies]
+prettyplease = { workspace = true }
diff --git a/sdk/note-codec/macros/src/expand.rs b/sdk/note-codec/macros/src/expand.rs
new file mode 100644
index 0000000000..b301058050
--- /dev/null
+++ b/sdk/note-codec/macros/src/expand.rs
@@ -0,0 +1,287 @@
+//! Macro expansion for generated author types and component dispatch.
+
+use miden_note_codec_wit::NOTE_CODEC_WIT;
+use miden_note_schema::{NotePackageArtifact, NotePackageResolver, NoteStorageSchema};
+use miden_note_schema_codegen::{RuntimePaths, generate_host_types};
+use proc_macro_crate::{FoundCrate, crate_name};
+use proc_macro2::{Span, TokenStream};
+use quote::{ToTokens, quote};
+use syn::{ItemImpl, LitStr, Type, spanned::Spanned};
+
+use crate::registry::{register_codec, register_schema, registered_codecs};
+
+/// Expands a project-relative type generation request.
+pub(crate) fn from_project(input: &LitStr) -> syn::Result<TokenStream> {
+    let artifact = NotePackageResolver::new("miden-note-codec")
+        .from_project(&input.value())
+        .map_err(|error| syn::Error::new(input.span(), error.to_string()))?;
+    expand_package_artifact(&artifact, input.span())
+}
+
+/// Expands an exact package type generation request.
+pub(crate) fn from_package(input: &LitStr) -> syn::Result<TokenStream> {
+    let artifact = NotePackageResolver::new("miden-note-codec")
+        .from_package(&input.value())
+        .map_err(|error| syn::Error::new(input.span(), error.to_string()))?;
+    expand_package_artifact(&artifact, input.span())
+}
+
+/// Expands a WIT string literal for internal tests.
+pub(crate) fn from_wit_text(input: &LitStr) -> syn::Result<TokenStream> {
+    let schema = NoteStorageSchema::from_wit_text(&input.value())
+        .map_err(|error| syn::Error::new(input.span(), error.to_string()))?;
+    expand_schema(&schema, input.span())
+}
+
+/// Loads one package, tracks it as an input, and expands its schema types.
+fn expand_package_artifact(artifact: &NotePackageArtifact, span: Span) -> syn::Result<TokenStream> {
+    let types = expand_schema(artifact.schema(), span)?;
+    let tracked_path = artifact.path().to_string_lossy();
+    let tracked_manifests = artifact
+        .tracked_inputs()
+        .iter()
+        .map(|path| path.to_string_lossy().into_owned())
+        .collect::<Vec<_>>();
+    let package_cache_env = midenc_frontend_wasm_metadata::package_cache::PACKAGE_CACHE_ENV;
+    Ok(quote! {
+        // These constants exist only to register the package file, the manifests that named it,
+        // and the cache path as proc-macro rebuild inputs.
+        const _: &[u8] = ::core::include_bytes!(#tracked_path);
+        #(const _: &[u8] = ::core::include_bytes!(#tracked_manifests);)*
+        const _: ::core::option::Option<&str> = ::core::option_env!(#package_cache_env);
+        #types
+    })
+}
+
+/// Generates host-profile types and records their WIT identities.
+fn expand_schema(schema: &NoteStorageSchema, span: Span) -> syn::Result<TokenStream> {
+    let facade = note_codec_facade();
+    let runtime = RuntimePaths::through_facade(quote!(#facade));
+    let generated = generate_host_types(schema, &runtime)
+        .map_err(|error| syn::Error::new(span, error.to_string()))?;
+    register_schema(schema, span)?;
+    Ok(generated.tokens().clone())
+}
+
+/// Validates and records one marked author codec implementation.
+pub(crate) fn note_codec(args: TokenStream, item: ItemImpl) -> syn::Result<TokenStream> {
+    if !args.is_empty() {
+        return Err(syn::Error::new_spanned(args, "#[note_codec] does not accept arguments"));
+    }
+    let (_, trait_path, _) = item.trait_.as_ref().ok_or_else(|| {
+        syn::Error::new_spanned(&item.self_ty, "#[note_codec] needs an AuthorTypeCodec impl")
+    })?;
+    if !trait_path
+        .segments
+        .last()
+        .is_some_and(|segment| segment.ident == "AuthorTypeCodec")
+    {
+        return Err(syn::Error::new_spanned(
+            trait_path,
+            "#[note_codec] can only mark an AuthorTypeCodec impl",
+        ));
+    }
+    if !item.generics.params.is_empty() {
+        return Err(syn::Error::new_spanned(
+            &item.generics,
+            "#[note_codec] does not support generic implementations",
+        ));
+    }
+    let rust_name = rust_type_name(&item.self_ty)?;
+    register_codec(&rust_name, item.self_ty.to_token_stream().to_string(), item.self_ty.span())?;
+    Ok(quote!(#item))
+}
+
+/// Generates native dispatch and Wasm-only component export glue.
+pub(crate) fn export_codecs(input: TokenStream) -> syn::Result<TokenStream> {
+    if !input.is_empty() {
+        return Err(syn::Error::new_spanned(input, "export_codecs! does not accept arguments"));
+    }
+    let codecs = registered_codecs(Span::call_site())?;
+    let facade = note_codec_facade();
+    let registrations = codecs
+        .iter()
+        .map(|codec| {
+            let fqn = &codec.fqn;
+            let ty = syn::parse_str::<Type>(&codec.rust_type).map_err(|error| {
+                syn::Error::new(
+                    Span::call_site(),
+                    format!("failed to restore codec type `{}`: {error}", codec.rust_type),
+                )
+            })?;
+            Ok((fqn, ty))
+        })
+        .collect::<syn::Result<Vec<_>>>()?;
+    let fqns = registrations.iter().map(|(fqn, _)| fqn).collect::<Vec<_>>();
+    let parse_arms = registrations.iter().map(|(fqn, ty)| {
+        quote! {
+            #fqn => {
+                let value = <#ty as #facade::AuthorTypeCodec>::parse(value)?;
+                let mut felts = ::std::vec::Vec::new();
+                <#ty as __MidenNoteEncode>::__write_note_felts(
+                    &value,
+                    &mut #facade::__private::miden_field_repr::FeltWriter::new(
+                        &mut felts,
+                    ),
+                )
+                .map_err(|error| format!(
+                    "failed to encode codec type `{}`: {error}",
+                    #fqn,
+                ))?;
+                Ok(#facade::felts_to_u64(&felts))
+            }
+        }
+    });
+    let display_arms = registrations.iter().map(|(fqn, ty)| {
+        quote! {
+            #fqn => {
+                let felts = #facade::felts_from_u64(value)?;
+                let mut reader =
+                    #facade::__private::miden_field_repr::FeltReader::new(&felts);
+                let value = <#ty as __MidenNoteDecode>::__read_note_felts(&mut reader)
+                    .map_err(|error| format!(
+                        "failed to decode codec type `{}`: {error}",
+                        #fqn,
+                    ))?;
+                reader.ensure_eof().map_err(|error| format!(
+                    "codec type `{}` has trailing felt data: {error}",
+                    #fqn,
+                ))?;
+                Ok(<#ty as #facade::AuthorTypeCodec>::display(&value))
+            }
+        }
+    });
+    let validate_arms = registrations.iter().map(|(fqn, ty)| {
+        quote! {
+            #fqn => {
+                let felts = #facade::felts_from_u64(value)?;
+                let mut reader =
+                    #facade::__private::miden_field_repr::FeltReader::new(&felts);
+                let value = <#ty as __MidenNoteDecode>::__read_note_felts(&mut reader)
+                    .map_err(|error| format!(
+                        "failed to decode codec type `{}`: {error}",
+                        #fqn,
+                    ))?;
+                reader.ensure_eof().map_err(|error| format!(
+                    "codec type `{}` has trailing felt data: {error}",
+                    #fqn,
+                ))?;
+                <#ty as #facade::AuthorTypeCodec>::validate(&value)
+            }
+        }
+    });
+    let wit = NOTE_CODEC_WIT;
+    // `quote` prints `::` paths with spaces around each separator. `generate!` reads this value
+    // as one path, so the spaces come out.
+    let wit_runtime_path = LitStr::new(
+        &format!("{facade}::__private::wit_bindgen::rt", facade = quote!(#facade)).replace(' ', ""),
+        Span::call_site(),
+    );
+
+    Ok(quote! {
+        /// Native dispatch used by the note codec component adapter.
+        #[doc(hidden)]
+        pub mod __miden_note_codec_dispatch {
+            use super::*;
+
+            /// Returns all supported canonical WIT FQNs.
+            pub fn supported_types() -> ::std::vec::Vec<::std::string::String> {
+                vec![#(#fqns.to_owned()),*]
+            }
+
+            /// Parses one value through its marked author codec.
+            pub fn parse(
+                type_fqn: &str,
+                value: &str,
+            ) -> ::core::result::Result<::std::vec::Vec<u64>, ::std::string::String> {
+                match type_fqn {
+                    #(#parse_arms,)*
+                    _ => Err(format!(
+                        "no note codec is registered for WIT type `{type_fqn}`"
+                    )),
+                }
+            }
+
+            /// Displays one value through its marked author codec.
+            pub fn display(
+                type_fqn: &str,
+                value: &[u64],
+            ) -> ::core::result::Result<::std::string::String, ::std::string::String> {
+                match type_fqn {
+                    #(#display_arms,)*
+                    _ => Err(format!(
+                        "no note codec is registered for WIT type `{type_fqn}`"
+                    )),
+                }
+            }
+
+            /// Validates one value through its marked author codec.
+            pub fn validate(
+                type_fqn: &str,
+                value: &[u64],
+            ) -> ::core::result::Result<(), ::std::string::String> {
+                match type_fqn {
+                    #(#validate_arms,)*
+                    _ => Err(format!(
+                        "no note codec is registered for WIT type `{type_fqn}`"
+                    )),
+                }
+            }
+        }
+
+        #[cfg(target_family = "wasm")]
+        mod __miden_note_codec_component {
+            #facade::__private::wit_bindgen::generate!({
+                inline: #wit,
+                world: "note-codec",
+                runtime_path: #wit_runtime_path,
+            });
+
+            struct Component;
+
+            impl exports::miden::note_codec::codec::Guest for Component {
+                fn supported_types() -> Vec<String> {
+                    super::__miden_note_codec_dispatch::supported_types()
+                }
+
+                fn parse(type_fqn: String, value: String) -> Result<Vec<u64>, String> {
+                    super::__miden_note_codec_dispatch::parse(&type_fqn, &value)
+                }
+
+                fn display(type_fqn: String, value: Vec<u64>) -> Result<String, String> {
+                    super::__miden_note_codec_dispatch::display(&type_fqn, &value)
+                }
+
+                fn validate(type_fqn: String, value: Vec<u64>) -> Result<(), String> {
+                    super::__miden_note_codec_dispatch::validate(&type_fqn, &value)
+                }
+            }
+
+            export!(Component);
+        }
+    })
+}
+
+/// Returns the final identifier of one concrete impl self type.
+fn rust_type_name(ty: &Type) -> syn::Result<String> {
+    let Type::Path(path) = ty else {
+        return Err(syn::Error::new_spanned(ty, "#[note_codec] needs a concrete generated type"));
+    };
+    path.path
+        .segments
+        .last()
+        .map(|segment| segment.ident.to_string())
+        .ok_or_else(|| syn::Error::new_spanned(ty, "#[note_codec] type path is empty"))
+}
+
+/// Resolves the note codec facade path in the consuming crate.
+fn note_codec_facade() -> syn::Path {
+    match crate_name("miden-note-codec") {
+        Ok(FoundCrate::Itself) => syn::parse_quote!(crate),
+        Ok(FoundCrate::Name(name)) => {
+            let ident = syn::Ident::new(&name, Span::call_site());
+            syn::parse_quote!(::#ident)
+        }
+        Err(_) => syn::parse_quote!(::miden_note_codec),
+    }
+}
diff --git a/sdk/note-codec/macros/src/lib.rs b/sdk/note-codec/macros/src/lib.rs
new file mode 100644
index 0000000000..e335919f57
--- /dev/null
+++ b/sdk/note-codec/macros/src/lib.rs
@@ -0,0 +1,68 @@
+//! Procedural macros for author-side note codec components.
+
+#![deny(missing_docs)]
+
+extern crate proc_macro;
+
+mod expand;
+mod registry;
+
+use proc_macro::TokenStream;
+use syn::{ItemImpl, LitStr, parse_macro_input};
+
+/// Generates host-profile note types from the package built by a Miden project.
+///
+/// The project path is relative to `CARGO_MANIFEST_DIR`. Build the note project with
+/// `cargo miden build` before compiling the codec crate.
+#[proc_macro]
+pub fn from_project(input: TokenStream) -> TokenStream {
+    let input = parse_macro_input!(input as LitStr);
+    expand::from_project(&input)
+        .unwrap_or_else(syn::Error::into_compile_error)
+        .into()
+}
+
+/// Generates host-profile note types from one exact Miden package path.
+///
+/// A relative path is resolved against `CARGO_MANIFEST_DIR`.
+#[proc_macro]
+pub fn from_package(input: TokenStream) -> TokenStream {
+    let input = parse_macro_input!(input as LitStr);
+    expand::from_package(&input)
+        .unwrap_or_else(syn::Error::into_compile_error)
+        .into()
+}
+
+/// Generates host-profile note types from WIT text for internal tests.
+#[doc(hidden)]
+#[proc_macro]
+pub fn from_wit_text(input: TokenStream) -> TokenStream {
+    let input = parse_macro_input!(input as LitStr);
+    expand::from_wit_text(&input)
+        .unwrap_or_else(syn::Error::into_compile_error)
+        .into()
+}
+
+/// Marks an [`miden_note_codec::AuthorTypeCodec`] implementation for component export.
+#[proc_macro_attribute]
+pub fn note_codec(args: TokenStream, input: TokenStream) -> TokenStream {
+    let item = parse_macro_input!(input as ItemImpl);
+    expand::note_codec(args.into(), item)
+        .unwrap_or_else(syn::Error::into_compile_error)
+        .into()
+}
+
+/// Exports all codecs marked earlier in the crate through the `miden:note-codec` component world.
+///
+/// Place this macro after the generated schema types and every `#[note_codec]` implementation.
+/// Procedural macros register codecs as they expand; supported types are exported in canonical FQN
+/// order.
+#[proc_macro]
+pub fn export_codecs(input: TokenStream) -> TokenStream {
+    expand::export_codecs(input.into())
+        .unwrap_or_else(syn::Error::into_compile_error)
+        .into()
+}
+
+#[cfg(test)]
+mod tests;
diff --git a/sdk/note-codec/macros/src/registry.rs b/sdk/note-codec/macros/src/registry.rs
new file mode 100644
index 0000000000..08815d97d7
--- /dev/null
+++ b/sdk/note-codec/macros/src/registry.rs
@@ -0,0 +1,244 @@
+//! Process-global schema and codec registration for one macro expansion process.
+
+use std::{
+    collections::{BTreeMap, BTreeSet},
+    sync::{Mutex, OnceLock},
+};
+
+use miden_note_schema::{NoteStorageSchema, SchemaCase, SchemaType, SchemaTypeKind};
+use miden_note_schema_codegen::generated_type_ident;
+use proc_macro2::Span;
+
+/// One marked author codec.
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub(crate) struct CodecRegistration {
+    /// Fully qualified WIT name implemented by the codec.
+    pub(crate) fqn: String,
+    /// Rust type path that implements the codec.
+    pub(crate) rust_type: String,
+}
+
+/// One marked codec together with the source location that produced it.
+#[derive(Clone, Debug)]
+struct RegisteredCodec {
+    registration: CodecRegistration,
+    location: ExpansionLocation,
+}
+
+/// Schema types and marked codecs registered by earlier macro expansions.
+#[derive(Default)]
+struct Registry {
+    /// Registered schema source and the expansion that supplied it.
+    schema: Option<(String, ExpansionLocation)>,
+    /// Generated Rust type name to WIT FQN, used by `#[note_codec]` lookup.
+    types: BTreeMap<String, String>,
+    /// Marked codecs keyed by the WIT FQN they implement.
+    codecs: BTreeMap<String, RegisteredCodec>,
+}
+
+/// The registrations of every crate this macro process expanded, keyed by crate.
+///
+/// Procedural macros register as they expand, so `#[note_codec]` and `export_codecs!` read what
+/// an earlier invocation in the same crate wrote.
+static REGISTRY: OnceLock<Mutex<BTreeMap<String, Registry>>> = OnceLock::new();
+
+/// Source location of one macro expansion.
+///
+/// The location tells a stale re-expansion of an edited invocation (same location) from a
+/// real conflict between two invocations (different locations).
+// Keep this registry identity/replacement policy aligned with sdk/base-macros/src/types.rs;
+// changes must land in both.
+type ExpansionLocation = (String, usize, usize);
+
+/// Returns the (file, line, column) location of one expansion span.
+fn expansion_location(span: Span) -> ExpansionLocation {
+    let start = span.start();
+    (span.file(), start.line, start.column)
+}
+
+/// Returns the key of the crate whose macro expansion is running.
+///
+/// Long-lived macro hosts such as the rust-analyzer proc-macro server expand many crates in one
+/// process; the key keeps their registrations apart. One Cargo package builds many crates, such
+/// as a library and its integration tests, so the key names the crate as well as the package
+/// directory.
+fn macro_invocation_crate_key() -> String {
+    let package = std::env::var("CARGO_MANIFEST_DIR")
+        .or_else(|_| std::env::var("CARGO_PKG_NAME"))
+        .unwrap_or_default();
+    let crate_name = std::env::var("CARGO_CRATE_NAME").unwrap_or_default();
+    format!("{package}\u{1f}{crate_name}")
+}
+
+/// Returns the shared registry map keyed by expanding crate.
+fn registry() -> &'static Mutex<BTreeMap<String, Registry>> {
+    REGISTRY.get_or_init(|| Mutex::new(BTreeMap::new()))
+}
+
+/// Records every generated named type, including the storage root.
+pub(crate) fn register_schema(schema: &NoteStorageSchema, span: Span) -> syn::Result<()> {
+    let mut bindings = BTreeMap::new();
+    collect_type_bindings(schema.root(), &mut BTreeSet::new(), &mut bindings)?;
+    let bindings = index_by_rust_type_name(&bindings, span)?;
+
+    let mut registries = registry()
+        .lock()
+        .map_err(|_| syn::Error::new(span, "note codec registry mutex is poisoned"))?;
+    let registry = registries.entry(macro_invocation_crate_key()).or_default();
+    let location = expansion_location(span);
+    match &registry.schema {
+        Some((existing, _)) if existing == schema.wit_text() => return Ok(()),
+        Some((_, existing_location)) if *existing_location == location => {
+            // A long-lived macro host re-expanded an edited invocation; replace the stale
+            // schema and drop the codecs that were registered against it.
+            registry.codecs.clear();
+        }
+        Some(_) => {
+            return Err(syn::Error::new(
+                span,
+                "miden-note-codec supports one note schema per crate; remove the second distinct \
+                 from_project!, from_package!, or from_wit_text! invocation. If this error \
+                 appears in your IDE after an edit, restart the rust-analyzer proc-macro server",
+            ));
+        }
+        None => {}
+    }
+    registry.schema = Some((schema.wit_text().to_owned(), location));
+    registry.types = bindings;
+    Ok(())
+}
+
+/// Resolves and records a marked codec implementation by generated Rust type name.
+pub(crate) fn register_codec(rust_name: &str, rust_type: String, span: Span) -> syn::Result<()> {
+    let mut registries = registry()
+        .lock()
+        .map_err(|_| syn::Error::new(span, "note codec registry mutex is poisoned"))?;
+    let registry = registries.entry(macro_invocation_crate_key()).or_default();
+    let fqn = registry.types.get(rust_name).ok_or_else(|| {
+        syn::Error::new(
+            span,
+            format!(
+                "type `{rust_name}` is not part of a registered note schema; invoke \
+                 miden_note_codec::from_project! or from_package! before #[note_codec]"
+            ),
+        )
+    })?;
+    let fqn = fqn.clone();
+    let location = expansion_location(span);
+    let registration = CodecRegistration {
+        fqn: fqn.clone(),
+        rust_type,
+    };
+    if let Some(existing) = registry.codecs.get(&fqn)
+        && existing.registration != registration
+        // A re-registration from the same source location replaces a stale entry.
+        && existing.location != location
+    {
+        return Err(syn::Error::new(
+            span,
+            format!(
+                "WIT type `{fqn}` already has a different #[note_codec] implementation. If this \
+                 error appears in your IDE after an edit, restart the rust-analyzer proc-macro \
+                 server"
+            ),
+        ));
+    }
+    registry.codecs.insert(
+        fqn,
+        RegisteredCodec {
+            registration,
+            location,
+        },
+    );
+    Ok(())
+}
+
+/// Returns marked codecs in canonical FQN order.
+pub(crate) fn registered_codecs(span: Span) -> syn::Result<Vec<CodecRegistration>> {
+    let mut registries = registry()
+        .lock()
+        .map_err(|_| syn::Error::new(span, "note codec registry mutex is poisoned"))?;
+    let registry = registries.entry(macro_invocation_crate_key()).or_default();
+    if registry.codecs.is_empty() {
+        return Err(syn::Error::new(
+            span,
+            "export_codecs! found no registered codecs; place it after from_project! or \
+             from_package! and after every #[note_codec] implementation because procedural macros \
+             register as they expand; supported types are exported in canonical FQN order",
+        ));
+    }
+    Ok(registry.codecs.values().map(|codec| codec.registration.clone()).collect())
+}
+
+/// Indexes WIT FQNs by the Rust type name the generator gives them.
+///
+/// Two WIT types of different interfaces may share a local name. The generator rejects that
+/// collision, and this index rejects it the same way instead of dropping one binding.
+fn index_by_rust_type_name(
+    bindings: &BTreeMap<String, String>,
+    span: Span,
+) -> syn::Result<BTreeMap<String, String>> {
+    let mut index = BTreeMap::new();
+    for (fqn, rust_name) in bindings {
+        if let Some(existing) = index.insert(rust_name.clone(), fqn.clone()) {
+            return Err(syn::Error::new(
+                span,
+                format!("WIT types `{existing}` and `{fqn}` both map to Rust type `{rust_name}`"),
+            ));
+        }
+    }
+    Ok(index)
+}
+
+/// Collects reachable generated record and variant bindings, keyed by WIT FQN.
+fn collect_type_bindings(
+    ty: &SchemaType,
+    seen: &mut BTreeSet<String>,
+    bindings: &mut BTreeMap<String, String>,
+) -> syn::Result<()> {
+    if ty.standard_leaf().is_some() {
+        return Ok(());
+    }
+    if matches!(ty.kind(), SchemaTypeKind::Record(_) | SchemaTypeKind::Variant(_)) {
+        let fqn = ty.fqn().ok_or_else(|| {
+            syn::Error::new(Span::call_site(), "a generated note codec type has no WIT FQN")
+        })?;
+        let name = ty.name().ok_or_else(|| {
+            syn::Error::new(
+                Span::call_site(),
+                format!("generated WIT type `{fqn}` has no local name"),
+            )
+        })?;
+        if !seen.insert(fqn.to_owned()) {
+            return Ok(());
+        }
+        bindings.insert(fqn.to_owned(), generated_type_ident(name));
+    }
+
+    match ty.kind() {
+        SchemaTypeKind::Record(fields) => {
+            for field in fields {
+                collect_type_bindings(field.ty(), seen, bindings)?;
+            }
+        }
+        SchemaTypeKind::Option(payload) => collect_type_bindings(payload, seen, bindings)?,
+        SchemaTypeKind::Variant(cases) => {
+            for payload in cases.iter().filter_map(SchemaCase::payload) {
+                collect_type_bindings(payload, seen, bindings)?;
+            }
+        }
+        SchemaTypeKind::Felt | SchemaTypeKind::Primitive(_) => {}
+    }
+    Ok(())
+}
+
+/// Clears the process-wide macro registry between unit tests.
+///
+/// The registry lives for the whole proc-macro process, so a test that expands macros must start
+/// from an empty registry. Tests serialize on the registry test lock before they call this.
+#[cfg(test)]
+pub(crate) fn reset_for_tests() {
+    if let Some(registry) = REGISTRY.get() {
+        registry.lock().expect("mutex poisoned").clear();
+    }
+}
diff --git a/sdk/note-codec/macros/src/tests.rs b/sdk/note-codec/macros/src/tests.rs
new file mode 100644
index 0000000000..751d22870b
--- /dev/null
+++ b/sdk/note-codec/macros/src/tests.rs
@@ -0,0 +1,219 @@
+//! Tests for codec macro registration and expansion.
+
+use std::sync::{Mutex, MutexGuard};
+
+use proc_macro2::Span;
+use quote::quote;
+use syn::{ItemImpl, LitStr};
+
+use crate::{expand, registry::reset_for_tests};
+
+static REGISTRY_TEST_LOCK: Mutex<()> = Mutex::new(());
+
+/// Serializes tests that exercise the process-global procedural-macro registry.
+fn lock_registry() -> MutexGuard<'static, ()> {
+    REGISTRY_TEST_LOCK.lock().expect("registry test mutex is poisoned")
+}
+
+const SCHEMA: &str = r#"
+package example:codec-schema@1.0.0;
+
+interface note-storage {
+    record ratio {
+        numerator: u64,
+        denominator: u64,
+    }
+
+    record codec-note {
+        ratio: ratio,
+    }
+
+    type storage = codec-note;
+}
+"#;
+
+const EMBEDDED_CORE_SCHEMA: &str = r#"
+package example:embedded-core-schema@1.0.0;
+
+use miden:base/core-types@1.0.0;
+
+interface note-storage {
+    use core-types.{digest};
+    record embedded-core-note { value: digest }
+    type storage = embedded-core-note;
+}
+
+package miden:base@1.0.0 {
+    interface core-types {
+        record felt { inner: f32 }
+        record word { a: felt, b: felt, c: felt, d: felt }
+        record digest { inner: word }
+    }
+}
+"#;
+
+#[test]
+fn schema_and_codec_registration_generate_native_and_wasm_dispatch() {
+    let _guard = lock_registry();
+    reset_for_tests();
+    let schema = LitStr::new(SCHEMA, Span::call_site());
+    let generated = expand::from_wit_text(&schema).unwrap();
+    let item: ItemImpl = syn::parse2(quote! {
+        impl miden_note_codec::AuthorTypeCodec for Ratio {
+            fn parse(_value: &str) -> Result<Self, String> { todo!() }
+            fn display(&self) -> String { todo!() }
+            fn validate(&self) -> Result<(), String> { todo!() }
+        }
+    })
+    .unwrap();
+    expand::note_codec(quote!(), item).unwrap();
+    let root_item: ItemImpl = syn::parse2(quote! {
+        impl miden_note_codec::AuthorTypeCodec for CodecNote {
+            fn parse(_value: &str) -> Result<Self, String> { todo!() }
+            fn display(&self) -> String { todo!() }
+            fn validate(&self) -> Result<(), String> { todo!() }
+        }
+    })
+    .unwrap();
+    expand::note_codec(quote!(), root_item).unwrap();
+    let exported = expand::export_codecs(quote!()).unwrap();
+    let source = prettyplease::unparse(&syn::parse2(quote!(#generated #exported)).unwrap());
+
+    assert!(source.contains("pub struct CodecNote"));
+    assert!(source.contains("pub struct Ratio"));
+    assert!(source.contains("::miden_note_codec::__private::miden_field_repr"));
+    assert!(source.contains("felt_repr(crate_path"));
+    assert!(!source.contains("extern crate"));
+    assert!(source.contains("example:codec-schema/note-storage@1.0.0.codec-note"));
+    assert!(source.contains("example:codec-schema/note-storage@1.0.0.ratio"));
+    assert!(source.contains("cfg(target_family = \"wasm\")"));
+    assert!(source.contains("exports::miden::note_codec::codec::Guest"));
+}
+
+const RESERVED_NAME_SCHEMA: &str = r#"
+package example:reserved-schema@1.0.0;
+
+interface note-storage {
+    record %self {
+        value: u64,
+    }
+
+    record reserved-note {
+        inner: %self,
+    }
+
+    type storage = reserved-note;
+}
+"#;
+
+#[test]
+fn a_reserved_wit_name_registers_under_the_generated_rust_name() {
+    let _guard = lock_registry();
+    reset_for_tests();
+    let schema = LitStr::new(RESERVED_NAME_SCHEMA, Span::call_site());
+    let generated = expand::from_wit_text(&schema).unwrap();
+    // The generator escapes the Rust reserved word, so the registry key must match `Self_`.
+    let item: ItemImpl = syn::parse2(quote! {
+        impl miden_note_codec::AuthorTypeCodec for Self_ {
+            fn parse(_value: &str) -> Result<Self, String> { todo!() }
+            fn display(&self) -> String { todo!() }
+            fn validate(&self) -> Result<(), String> { todo!() }
+        }
+    })
+    .unwrap();
+    expand::note_codec(quote!(), item).unwrap();
+    let exported = expand::export_codecs(quote!()).unwrap();
+    let source = prettyplease::unparse(&syn::parse2(quote!(#generated #exported)).unwrap());
+
+    assert!(source.contains("pub struct Self_"));
+    assert!(source.contains("example:reserved-schema/note-storage@1.0.0.self"));
+}
+
+#[test]
+fn a_crate_cannot_register_two_distinct_schemas() {
+    let _guard = lock_registry();
+    reset_for_tests();
+    let (first_span, second_span) = distinct_expansion_spans();
+    let first = LitStr::new(SCHEMA, first_span);
+    expand::from_wit_text(&first).unwrap();
+
+    let second_schema = SCHEMA
+        .replace("example:codec-schema", "example:other-schema")
+        .replace("codec-note", "other-note");
+    let second = LitStr::new(&second_schema, second_span);
+    let error = expand::from_wit_text(&second).unwrap_err().to_string();
+
+    assert!(error.contains("one note schema per crate"));
+    assert!(error.contains("second distinct"));
+}
+
+#[test]
+fn same_location_reregistration_replaces_a_stale_schema() {
+    let _guard = lock_registry();
+    reset_for_tests();
+    let first = LitStr::new(SCHEMA, Span::call_site());
+    expand::from_wit_text(&first).unwrap();
+
+    // A long-lived macro host re-expands the edited invocation from the same location.
+    let second_schema = SCHEMA
+        .replace("example:codec-schema", "example:other-schema")
+        .replace("codec-note", "other-note");
+    let second = LitStr::new(&second_schema, Span::call_site());
+    expand::from_wit_text(&second).unwrap();
+}
+
+/// Returns two spans with distinct source locations.
+fn distinct_expansion_spans() -> (Span, Span) {
+    let tokens: proc_macro2::TokenStream = "first
+second"
+        .parse()
+        .expect("the span fixture must parse");
+    let mut tokens = tokens.into_iter();
+    let first = tokens.next().expect("first fixture token").span();
+    let second = tokens.next().expect("second fixture token").span();
+    assert_ne!(first.start().line, second.start().line, "fixture spans must differ");
+    (first, second)
+}
+
+#[test]
+fn export_requires_earlier_codec_declarations() {
+    let _guard = lock_registry();
+    reset_for_tests();
+    let error = expand::export_codecs(quote!()).unwrap_err().to_string();
+
+    assert!(error.contains("found no registered codecs"));
+    assert!(error.contains("register as they expand"));
+    assert!(error.contains("canonical FQN order"));
+    assert!(error.contains("#[note_codec]"));
+}
+
+#[test]
+fn codec_registry_uses_canonical_standard_leaf_definition() {
+    let _guard = lock_registry();
+    reset_for_tests();
+    let schema = LitStr::new(EMBEDDED_CORE_SCHEMA, Span::call_site());
+    let generated = expand::from_wit_text(&schema).unwrap();
+    let digest_impl: ItemImpl = syn::parse2(quote! {
+        impl miden_note_codec::AuthorTypeCodec for Digest {
+            fn parse(_value: &str) -> Result<Self, String> { todo!() }
+            fn display(&self) -> String { todo!() }
+            fn validate(&self) -> Result<(), String> { todo!() }
+        }
+    })
+    .unwrap();
+    expand::note_codec(quote!(), digest_impl).unwrap();
+
+    let word_impl: ItemImpl = syn::parse2(quote! {
+        impl miden_note_codec::AuthorTypeCodec for Word {
+            fn parse(_value: &str) -> Result<Self, String> { todo!() }
+            fn display(&self) -> String { todo!() }
+            fn validate(&self) -> Result<(), String> { todo!() }
+        }
+    })
+    .unwrap();
+    let error = expand::note_codec(quote!(), word_impl).unwrap_err().to_string();
+
+    let source = prettyplease::unparse(&syn::parse2(quote!(#generated)).unwrap());
+    assert!(source.contains("pub struct Digest"));
+    assert!(error.contains("not part of a registered note schema"));
+}
diff --git a/sdk/note-codec/src/lib.rs b/sdk/note-codec/src/lib.rs
new file mode 100644
index 0000000000..e55fdfb77d
--- /dev/null
+++ b/sdk/note-codec/src/lib.rs
@@ -0,0 +1,194 @@
+//! Author-side support for typed note storage codecs.
+//!
+//! Codec components exchange field elements as canonical `u64` values. This crate checks every
+//! integer before it enters [`Felt`], so a component cannot introduce a non-canonical (unreduced)
+//! or ambiguous field representation.
+//!
+//! Call `from_project!` or `from_package!` first. Then declare every `#[note_codec]`
+//! implementation. Call `export_codecs!` last. Macros register as they expand, while supported
+//! types are exported in canonical FQN order.
+//!
+//! ```ignore
+//! use miden_note_codec::AuthorTypeCodec;
+//!
+//! miden_note_codec::from_project!("../my-note");
+//!
+//! #[miden_note_codec::note_codec]
+//! impl AuthorTypeCodec for Ratio {
+//!     // Implement parse, display, and validate.
+//! }
+//!
+//! miden_note_codec::export_codecs!();
+//! ```
+//!
+//! The note project opts in to the codec build with package-level metadata in its
+//! `miden-project.toml`. The `crate` directory is relative to that manifest:
+//!
+//! ```toml
+//! [package.metadata.midenc.note-codec]
+//! crate = "../my-note-codec"
+//! ```
+//!
+//! The codec is embedded only when the note is built as its own project. A note that another
+//! project pulls in as a source dependency carries no codec section, because the codec crate's
+//! inputs are outside the build provenance, so a stored dependency copy could keep a stale codec
+//! after the codec crate changes. Load the note's own package to get the codec.
+
+#![deny(missing_docs)]
+
+use miden_field::Felt;
+use miden_field_repr::{FeltReader, FromFeltRepr, ToFeltRepr};
+#[doc(hidden)]
+pub use miden_note_codec_macros::from_wit_text;
+pub use miden_note_codec_macros::{export_codecs, from_package, from_project, note_codec};
+pub use miden_note_codec_wit::NOTE_CODEC_WIT;
+pub use miden_protocol::{account, asset};
+
+/// Parses, displays, and validates one author-defined note storage type.
+pub trait AuthorTypeCodec: Sized {
+    /// Parses text into a typed value.
+    fn parse(value: &str) -> Result<Self, String>;
+
+    /// Displays a typed value.
+    fn display(&self) -> String;
+
+    /// Validates semantic constraints that are not part of the felt layout.
+    fn validate(&self) -> Result<(), String>;
+}
+
+/// Converts a field element to its canonical component-boundary integer.
+pub fn felt_to_u64(value: Felt) -> u64 {
+    value.as_canonical_u64()
+}
+
+/// Converts a component-boundary integer to a canonical field element.
+pub fn felt_from_u64(value: u64) -> Result<Felt, String> {
+    Felt::new(value).map_err(|error| format!("invalid component felt `{value}`: {error}"))
+}
+
+/// Converts field elements to canonical component-boundary integers.
+pub fn felts_to_u64(values: &[Felt]) -> Vec<u64> {
+    values.iter().copied().map(felt_to_u64).collect()
+}
+
+/// Converts component-boundary integers to canonical field elements.
+pub fn felts_from_u64(values: &[u64]) -> Result<Vec<Felt>, String> {
+    values
+        .iter()
+        .copied()
+        .enumerate()
+        .map(|(index, value)| {
+            felt_from_u64(value)
+                .map_err(|error| format!("component felt at index {index} is invalid: {error}"))
+        })
+        .collect()
+}
+
+/// Encodes a native felt-repr value for the component boundary.
+pub fn encode_felt_repr(value: &impl ToFeltRepr) -> Vec<u64> {
+    felts_to_u64(&value.to_felt_repr())
+}
+
+/// Decodes one complete native felt-repr value from the component boundary.
+pub fn decode_felt_repr<T: FromFeltRepr>(values: &[u64]) -> Result<T, String> {
+    let felts = felts_from_u64(values)?;
+    let mut reader = FeltReader::new(&felts);
+    let value = T::from_felt_repr(&mut reader)
+        .map_err(|error| format!("invalid felt representation: {error}"))?;
+    reader
+        .ensure_eof()
+        .map_err(|error| format!("invalid felt representation: {error}"))?;
+    Ok(value)
+}
+
+/// Support used by generated host-profile types.
+#[doc(hidden)]
+pub mod __private {
+    pub use miden_field;
+    pub use miden_field_repr;
+    pub use miden_protocol;
+    pub use wit_bindgen;
+
+    /// Lightweight error support required by shared generated type helpers.
+    pub mod miden_note_schema {
+        use core::fmt;
+
+        /// A generated type conversion error.
+        #[derive(Clone, Debug, Eq, PartialEq)]
+        pub struct Error(String);
+
+        impl Error {
+            /// Creates a generated type conversion error.
+            pub fn new(message: impl Into<String>) -> Self {
+                Self(message.into())
+            }
+        }
+
+        impl fmt::Display for Error {
+            fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+                f.write_str(&self.0)
+            }
+        }
+
+        impl std::error::Error for Error {}
+
+        /// A generated type conversion result.
+        pub type Result<T> = core::result::Result<T, Error>;
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    /// A sample author type used to test the native boundary glue.
+    #[derive(Clone, Debug, Eq, PartialEq, FromFeltRepr, ToFeltRepr)]
+    struct Ratio {
+        numerator: u64,
+        denominator: u64,
+    }
+
+    impl AuthorTypeCodec for Ratio {
+        fn parse(value: &str) -> Result<Self, String> {
+            let (numerator, denominator) = value
+                .split_once('/')
+                .ok_or_else(|| "a ratio must use `numerator/denominator`".to_owned())?;
+            Ok(Self {
+                numerator: numerator.parse::<u64>().map_err(|error| error.to_string())?,
+                denominator: denominator.parse::<u64>().map_err(|error| error.to_string())?,
+            })
+        }
+
+        fn display(&self) -> String {
+            format!("{}/{}", self.numerator, self.denominator)
+        }
+
+        fn validate(&self) -> Result<(), String> {
+            if self.denominator == 0 {
+                Err("the denominator must not be zero".to_owned())
+            } else {
+                Ok(())
+            }
+        }
+    }
+
+    #[test]
+    fn author_trait_values_round_trip_through_boundary_glue() {
+        let ratio = Ratio::parse("3/2").unwrap();
+        ratio.validate().unwrap();
+        let encoded = encode_felt_repr(&ratio);
+        assert_eq!(encoded, [3, 0, 2, 0]);
+        let decoded = decode_felt_repr::<Ratio>(&encoded).unwrap();
+        assert_eq!(decoded, ratio);
+        assert_eq!(decoded.display(), "3/2");
+    }
+
+    #[test]
+    fn boundary_rejects_noncanonical_field_integers() {
+        let maximum = Felt::ORDER - 1;
+        assert_eq!(felt_to_u64(felt_from_u64(maximum).unwrap()), maximum);
+        assert!(felt_from_u64(Felt::ORDER).unwrap_err().contains("exceeds the felt modulus"));
+        assert!(felt_from_u64(u64::MAX).unwrap_err().contains("exceeds the felt modulus"));
+        assert!(felts_from_u64(&[0, Felt::ORDER]).unwrap_err().contains("index 1"));
+    }
+}
diff --git a/sdk/note-codec/tests/account_id_dispatch.rs b/sdk/note-codec/tests/account_id_dispatch.rs
new file mode 100644
index 0000000000..d86454ac72
--- /dev/null
+++ b/sdk/note-codec/tests/account_id_dispatch.rs
@@ -0,0 +1,68 @@
+//! Verifies structural codec dispatch for a type that contains a protocol leaf.
+
+use miden_note_codec::{AuthorTypeCodec, export_codecs, from_wit_text, note_codec};
+use miden_protocol::account::AccountId;
+
+from_wit_text!(
+    r#"
+package example:account-codec@1.0.0;
+
+use miden:base/core-types@1.0.0;
+
+interface note-storage {
+    use core-types.{account-id};
+
+    record account-label {
+        account: account-id,
+        serial: u64,
+    }
+
+    record account-note {
+        label: account-label,
+    }
+
+    type storage = account-note;
+}
+
+package miden:base@1.0.0 {
+    interface core-types {
+        record felt { inner: f32 }
+        record account-id { prefix: felt, suffix: felt }
+    }
+}
+"#
+);
+
+#[note_codec]
+impl AuthorTypeCodec for AccountLabel {
+    fn parse(value: &str) -> Result<Self, String> {
+        let (account, serial) = value
+            .split_once(',')
+            .ok_or_else(|| "an account label must use `account-id,serial`".to_owned())?;
+        let (account, _) = AccountId::parse(account).map_err(|error| error.to_string())?;
+        let serial = serial.parse::<u64>().map_err(|error| error.to_string())?;
+        Ok(Self { account, serial })
+    }
+
+    fn display(&self) -> String {
+        format!("{},{}", self.account.to_hex(), self.serial)
+    }
+
+    fn validate(&self) -> Result<(), String> {
+        Ok(())
+    }
+}
+
+export_codecs!();
+
+#[test]
+fn account_id_codec_uses_generated_structural_traits() {
+    let account = AccountId::try_from(0xaa00_0000_0000_bc11_0000_bc00_0000_de00u128).unwrap();
+    let input = format!("{},7", account.to_hex());
+    let fqn = AccountLabel::WIT_FQN;
+
+    let encoded = __miden_note_codec_dispatch::parse(fqn, &input).unwrap();
+    assert_eq!(encoded, [account.prefix().as_u64(), account.suffix().as_canonical_u64(), 7, 0]);
+    __miden_note_codec_dispatch::validate(fqn, &encoded).unwrap();
+    assert_eq!(__miden_note_codec_dispatch::display(fqn, &encoded).unwrap(), input);
+}
diff --git a/sdk/note-codec/tests/component_export.rs b/sdk/note-codec/tests/component_export.rs
new file mode 100644
index 0000000000..fb2ea70bb2
--- /dev/null
+++ b/sdk/note-codec/tests/component_export.rs
@@ -0,0 +1,206 @@
+//! Component export test for the author codec world.
+
+use std::{
+    env, fs,
+    path::{Path, PathBuf},
+    process::{Command, Output},
+};
+
+use midenc_frontend_wasm_metadata::NESTED_CARGO_SCRUB_ENV;
+use tempfile::TempDir;
+use wit_component::DecodedWasm;
+use wit_parser::WorldItem;
+
+const WASM_TARGET: &str = "wasm32-wasip2";
+
+#[test]
+fn minimal_codec_crate_builds_to_wasi_only_component() {
+    if !wasm_target_is_installed() {
+        eprintln!("skipping component export test: {WASM_TARGET} is not installed");
+        return;
+    }
+
+    let fixture = TempDir::new().expect("failed to create temporary codec crate");
+    write_fixture(fixture.path());
+    let target_dir = workspace_root().join("target/note-codec-component-test");
+    let mut command = Command::new(env::var_os("CARGO").unwrap_or_else(|| "cargo".into()));
+    command
+        .args([
+            "build",
+            "--manifest-path",
+            fixture.path().join("Cargo.toml").to_str().unwrap(),
+            "--release",
+            "--target",
+            WASM_TARGET,
+            "--offline",
+        ])
+        .env("CARGO_TARGET_DIR", &target_dir)
+        // Share the hash-keyed intermediates with the other test builds; only the
+        // name-keyed final artifacts stay in the directory above. Convention from
+        // `tests/support`.
+        .env("CARGO_BUILD_BUILD_DIR", workspace_root().join("target/miden_build_cache"));
+    for &variable in NESTED_CARGO_SCRUB_ENV {
+        command.env_remove(variable);
+    }
+    // Pin the guest rustflags after the scrub, the way the compiler builds a codec crate.
+    command.env("RUSTFLAGS", miden_note_schema::NOTE_CODEC_GUEST_RUSTFLAGS);
+    let output = command.output().expect("failed to run cargo for the component fixture");
+    assert_command_succeeded("building the component fixture", &output);
+
+    let component = fs::read(
+        target_dir.join(format!("{WASM_TARGET}/release/note_codec_component_fixture.wasm")),
+    )
+    .expect("component fixture did not produce a Wasm component");
+    // A codec crate must build to a component every consumer accepts.
+    miden_note_schema::validate_note_codec_component(
+        &component,
+        miden_note_schema::MAX_NOTE_CODEC_COMPONENT_BYTES,
+    )
+    .expect("the built component must pass the note codec load policy");
+    let DecodedWasm::Component(resolve, world_id) =
+        wit_component::decode(&component).expect("failed to decode the built component")
+    else {
+        panic!("the fixture build did not produce a component");
+    };
+    let world = &resolve.worlds[world_id];
+    for (key, _) in world.imports.iter() {
+        let name = resolve.name_world_key(key);
+        assert!(name.starts_with("wasi:"), "unexpected non-WASI import `{name}`");
+    }
+    assert_eq!(world.exports.len(), 1);
+
+    let interface_id = world
+        .exports
+        .values()
+        .find_map(|item| match item {
+            WorldItem::Interface { id, .. } => Some(*id),
+            _ => None,
+        })
+        .expect("the component does not export the note codec interface");
+    let interface = &resolve.interfaces[interface_id];
+    assert_eq!(interface.name.as_deref(), Some("codec"));
+    let package_id = interface.package.expect("codec interface has no package");
+    let package = &resolve.packages[package_id].name;
+    assert_eq!(package.namespace, "miden");
+    assert_eq!(package.name, "note-codec");
+    assert_eq!(package.version.as_ref().map(ToString::to_string).as_deref(), Some("1.0.0"));
+    assert_eq!(
+        interface.functions.keys().map(String::as_str).collect::<Vec<_>>(),
+        ["supported-types", "parse", "display", "validate"]
+    );
+}
+
+/// Writes the minimal author codec crate used by the componentization test.
+fn write_fixture(root: &Path) {
+    fs::create_dir(root.join("src")).expect("failed to create fixture source directory");
+    // Seed the workspace lockfile so the offline build resolves to the versions that the
+    // workspace already downloaded instead of racing the registry index.
+    fs::copy(workspace_root().join("Cargo.lock"), root.join("Cargo.lock"))
+        .expect("failed to seed the fixture with the workspace lockfile");
+    let codec_path = Path::new(env!("CARGO_MANIFEST_DIR"));
+    let manifest = format!(
+        r#"[package]
+name = "note-codec-component-fixture"
+version = "0.0.0"
+edition = "2024"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+codec-facade = {{ package = "miden-note-codec", path = {:?} }}
+
+[workspace]
+"#,
+        codec_path
+    );
+    fs::write(root.join("Cargo.toml"), manifest).expect("failed to write fixture manifest");
+    fs::write(root.join("src/lib.rs"), FIXTURE_SOURCE).expect("failed to write fixture source");
+}
+
+/// Returns the compiler workspace root.
+fn workspace_root() -> PathBuf {
+    Path::new(env!("CARGO_MANIFEST_DIR"))
+        .parent()
+        .and_then(Path::parent)
+        .expect("note-codec must be inside sdk/")
+        .to_owned()
+}
+
+/// Reports all command output when one fixture command fails.
+fn assert_command_succeeded(action: &str, output: &Output) {
+    assert!(
+        output.status.success(),
+        "failed while {action}\nstdout:\n{}\nstderr:\n{}",
+        String::from_utf8_lossy(&output.stdout),
+        String::from_utf8_lossy(&output.stderr),
+    );
+}
+
+/// Local copy of the sysroot probe in tests/support to keep this test dependency-light.
+fn wasm_target_is_installed() -> bool {
+    let output = match Command::new("rustc").args(["--print", "sysroot"]).output() {
+        Ok(output) if output.status.success() => output,
+        Ok(output) => {
+            eprintln!(
+                "`rustc --print sysroot` failed:\n{}",
+                String::from_utf8_lossy(&output.stderr)
+            );
+            return false;
+        }
+        Err(error) => {
+            eprintln!("could not run `rustc --print sysroot` (rustup may be unavailable): {error}");
+            return false;
+        }
+    };
+    let sysroot = Path::new(String::from_utf8_lossy(&output.stdout).trim()).to_path_buf();
+    sysroot.join("lib").join("rustlib").join(WASM_TARGET).exists()
+}
+
+const FIXTURE_SOURCE: &str = r##"
+use codec_facade::AuthorTypeCodec;
+
+codec_facade::from_wit_text!(r#"
+package example:codec-schema@1.0.0;
+
+interface note-storage {
+    record ratio {
+        numerator: u64,
+        denominator: u64,
+    }
+
+    record codec-note {
+        ratio: ratio,
+    }
+
+    type storage = codec-note;
+}
+"#);
+
+#[codec_facade::note_codec]
+impl AuthorTypeCodec for Ratio {
+    fn parse(value: &str) -> Result<Self, String> {
+        let (numerator, denominator) = value
+            .split_once('/')
+            .ok_or_else(|| "a ratio must use `numerator/denominator`".to_owned())?;
+        Ok(Self {
+            numerator: numerator.parse::<u64>().map_err(|error| error.to_string())?,
+            denominator: denominator.parse::<u64>().map_err(|error| error.to_string())?,
+        })
+    }
+
+    fn display(&self) -> String {
+        format!("{}/{}", self.numerator, self.denominator)
+    }
+
+    fn validate(&self) -> Result<(), String> {
+        if self.denominator == 0 {
+            Err("the denominator must not be zero".to_owned())
+        } else {
+            Ok(())
+        }
+    }
+}
+
+codec_facade::export_codecs!();
+"##;
diff --git a/sdk/note-codec/tests/dispatch.rs b/sdk/note-codec/tests/dispatch.rs
new file mode 100644
index 0000000000..11fc943609
--- /dev/null
+++ b/sdk/note-codec/tests/dispatch.rs
@@ -0,0 +1,72 @@
+//! Native tests for generated author codec dispatch.
+
+use miden_note_codec::AuthorTypeCodec;
+
+miden_note_codec::from_wit_text!(
+    r#"
+package example:codec-schema@1.0.0;
+
+interface note-storage {
+    record ratio {
+        numerator: u64,
+        denominator: u64,
+    }
+
+    record codec-note {
+        ratio: ratio,
+    }
+
+    type storage = codec-note;
+}
+"#
+);
+
+#[miden_note_codec::note_codec]
+impl AuthorTypeCodec for Ratio {
+    fn parse(value: &str) -> Result<Self, String> {
+        let (numerator, denominator) = value
+            .split_once('/')
+            .ok_or_else(|| "a ratio must use `numerator/denominator`".to_owned())?;
+        Ok(Self {
+            numerator: numerator.parse::<u64>().map_err(|error| error.to_string())?,
+            denominator: denominator.parse::<u64>().map_err(|error| error.to_string())?,
+        })
+    }
+
+    fn display(&self) -> String {
+        format!("{}/{}", self.numerator, self.denominator)
+    }
+
+    fn validate(&self) -> Result<(), String> {
+        if self.denominator == 0 {
+            Err("the denominator must not be zero".to_owned())
+        } else {
+            Ok(())
+        }
+    }
+}
+
+miden_note_codec::export_codecs!();
+
+#[test]
+fn marked_codec_dispatches_by_canonical_wit_fqn() {
+    const RATIO_FQN: &str = "example:codec-schema/note-storage@1.0.0.ratio";
+
+    assert_eq!(__miden_note_codec_dispatch::supported_types(), [RATIO_FQN]);
+    let encoded = __miden_note_codec_dispatch::parse(RATIO_FQN, "3/2").unwrap();
+    assert_eq!(encoded, [3, 0, 2, 0]);
+    assert_eq!(__miden_note_codec_dispatch::display(RATIO_FQN, &encoded).unwrap(), "3/2");
+    __miden_note_codec_dispatch::validate(RATIO_FQN, &encoded).unwrap();
+
+    let invalid = __miden_note_codec_dispatch::parse(RATIO_FQN, "3/0").unwrap();
+    assert!(
+        __miden_note_codec_dispatch::validate(RATIO_FQN, &invalid)
+            .unwrap_err()
+            .contains("denominator")
+    );
+    assert!(
+        __miden_note_codec_dispatch::parse("example:unknown/type", "3/2")
+            .unwrap_err()
+            .contains("no note codec is registered")
+    );
+}
diff --git a/sdk/note-codec/wit-crate/Cargo.toml b/sdk/note-codec/wit-crate/Cargo.toml
new file mode 100644
index 0000000000..401e48fcf6
--- /dev/null
+++ b/sdk/note-codec/wit-crate/Cargo.toml
@@ -0,0 +1,17 @@
+[package]
+name = "miden-note-codec-wit"
+description = "Canonical WIT contract for Miden note codecs"
+version = "0.14.0"
+rust-version.workspace = true
+authors.workspace = true
+repository.workspace = true
+homepage.workspace = true
+documentation.workspace = true
+categories.workspace = true
+keywords.workspace = true
+license.workspace = true
+readme.workspace = true
+edition.workspace = true
+
+[lib]
+doctest = false
diff --git a/sdk/note-codec/wit-crate/src/lib.rs b/sdk/note-codec/wit-crate/src/lib.rs
new file mode 100644
index 0000000000..f0a72daf5e
--- /dev/null
+++ b/sdk/note-codec/wit-crate/src/lib.rs
@@ -0,0 +1,8 @@
+//! Canonical WIT contract for Miden note codecs.
+
+#![deny(missing_docs)]
+#![no_std]
+
+/// The WIT document implemented by note codec components.
+pub const NOTE_CODEC_WIT: &str =
+    include_str!(concat!(env!("CARGO_MANIFEST_DIR"), "/wit/note-codec.wit"));
diff --git a/sdk/note-codec/wit-crate/wit/note-codec.wit b/sdk/note-codec/wit-crate/wit/note-codec.wit
new file mode 100644
index 0000000000..950aa77cb9
--- /dev/null
+++ b/sdk/note-codec/wit-crate/wit/note-codec.wit
@@ -0,0 +1,28 @@
+// Mirror note: the wit-crate file is canonical; sdk/note-schema/wit/note-codec.wit exists because
+// Wasmtime bindgen!(path:) needs package-local WIT, and an equality test guards both files.
+package miden:note-codec@1.0.0;
+
+/// Parses, displays, and validates custom note storage types.
+interface codec {
+    /// A canonical Miden field element at the component boundary.
+    ///
+    /// This is a `u64`, not the core-types `felt` record, because that record models the
+    /// compiler's guest felt value and does not expose its canonical integer representation.
+    type felt = u64;
+
+    /// Returns the fully-qualified WIT names handled by this component.
+    supported-types: func() -> list<string>;
+
+    /// Parses text into a type's structural felt representation.
+    parse: func(type-fqn: string, value: string) -> result<list<felt>, string>;
+
+    /// Displays a type's structural felt representation.
+    display: func(type-fqn: string, value: list<felt>) -> result<string, string>;
+
+    /// Validates a type's structural felt representation.
+    validate: func(type-fqn: string, value: list<felt>) -> result<_, string>;
+}
+
+world note-codec {
+    export codec;
+}
diff --git a/sdk/note-schema/Cargo.toml b/sdk/note-schema/Cargo.toml
new file mode 100644
index 0000000000..2c827f3183
--- /dev/null
+++ b/sdk/note-schema/Cargo.toml
@@ -0,0 +1,39 @@
+[package]
+name = "miden-note-schema"
+description = "Host-side reader and codec registry for Miden note storage schemas"
+version = "0.14.0"
+rust-version.workspace = true
+authors.workspace = true
+repository.workspace = true
+homepage.workspace = true
+documentation.workspace = true
+categories.workspace = true
+keywords.workspace = true
+license.workspace = true
+readme.workspace = true
+edition.workspace = true
+
+[features]
+default = []
+codec-component = ["dep:wasmtime"]
+
+[lib]
+doctest = false
+
+[dependencies]
+miden-field.workspace = true
+miden-field-repr.workspace = true
+miden-mast-package = { workspace = true, features = ["std"] }
+miden-protocol = { workspace = true, features = ["std"] }
+midenc-frontend-wasm-metadata.workspace = true
+toml.workspace = true
+wasmparser.workspace = true
+wit-parser.workspace = true
+wasmtime = { workspace = true, optional = true }
+
+[dev-dependencies]
+miden-core.workspace = true
+miden-note-codec-wit.workspace = true
+midenc-integration-test-support.workspace = true
+tempfile.workspace = true
+wat.workspace = true
diff --git a/sdk/note-schema/codegen/Cargo.toml b/sdk/note-schema/codegen/Cargo.toml
new file mode 100644
index 0000000000..fc681dfe46
--- /dev/null
+++ b/sdk/note-schema/codegen/Cargo.toml
@@ -0,0 +1,27 @@
+[package]
+name = "miden-note-schema-codegen"
+description = "Rust code generator for Miden note storage schemas"
+version = "0.14.0"
+rust-version.workspace = true
+authors.workspace = true
+repository.workspace = true
+homepage.workspace = true
+documentation.workspace = true
+categories.workspace = true
+keywords.workspace = true
+license.workspace = true
+readme.workspace = true
+edition.workspace = true
+
+[lib]
+doctest = false
+
+[dependencies]
+heck.workspace = true
+miden-note-schema.workspace = true
+proc-macro2.workspace = true
+quote.workspace = true
+
+[dev-dependencies]
+prettyplease = { workspace = true }
+syn.workspace = true
diff --git a/sdk/note-schema/codegen/src/lib.rs b/sdk/note-schema/codegen/src/lib.rs
new file mode 100644
index 0000000000..f26c1c97ca
--- /dev/null
+++ b/sdk/note-schema/codegen/src/lib.rs
@@ -0,0 +1,781 @@
+//! Shared Rust code generation for resolved note storage schemas.
+
+#![deny(missing_docs)]
+
+use std::{
+    collections::{BTreeMap, BTreeSet, HashMap},
+    fmt,
+};
+
+use heck::{ToSnakeCase, ToUpperCamelCase};
+use miden_note_schema::{
+    NoteStorageSchema, PrimitiveType, SchemaCase, SchemaField, SchemaType, SchemaTypeKind,
+    StandardLeaf,
+};
+use proc_macro2::{Ident, Literal, Span, TokenStream};
+use quote::{format_ident, quote};
+
+/// An error reported while generating Rust bindings.
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct CodegenError {
+    message: String,
+}
+
+impl CodegenError {
+    /// Creates a code-generation error.
+    fn new(message: impl Into<String>) -> Self {
+        Self {
+            message: message.into(),
+        }
+    }
+}
+
+impl fmt::Display for CodegenError {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.write_str(&self.message)
+    }
+}
+
+impl std::error::Error for CodegenError {}
+
+/// Rust host types and metadata produced from one note storage schema.
+pub struct GeneratedTypes {
+    tokens: TokenStream,
+    root_ident: Ident,
+    type_idents: Vec<Ident>,
+    has_nested_named_types: bool,
+}
+
+impl GeneratedTypes {
+    /// Returns the generated Rust items.
+    pub const fn tokens(&self) -> &TokenStream {
+        &self.tokens
+    }
+
+    /// Returns the Rust identifier for the root storage type.
+    pub const fn root_ident(&self) -> &Ident {
+        &self.root_ident
+    }
+
+    /// Returns every generated Rust type identifier in emission order.
+    pub fn type_idents(&self) -> &[Ident] {
+        &self.type_idents
+    }
+
+    /// Returns true when the schema has a generated named type below its storage root.
+    pub const fn has_nested_named_types(&self) -> bool {
+        self.has_nested_named_types
+    }
+}
+
+/// Runtime crate paths used by generated host-profile code.
+#[derive(Clone)]
+pub struct RuntimePaths {
+    miden_field: TokenStream,
+    miden_field_repr: TokenStream,
+    miden_note_schema: TokenStream,
+    miden_protocol: TokenStream,
+}
+
+impl RuntimePaths {
+    /// Creates a runtime path set from four crate or module paths.
+    pub fn new(
+        miden_field: TokenStream,
+        miden_field_repr: TokenStream,
+        miden_note_schema: TokenStream,
+        miden_protocol: TokenStream,
+    ) -> Self {
+        Self {
+            miden_field,
+            miden_field_repr,
+            miden_note_schema,
+            miden_protocol,
+        }
+    }
+
+    /// Creates paths through a facade crate's hidden runtime re-exports.
+    pub fn through_facade(facade: TokenStream) -> Self {
+        Self::new(
+            quote!(#facade::__private::miden_field),
+            quote!(#facade::__private::miden_field_repr),
+            quote!(#facade::__private::miden_note_schema),
+            quote!(#facade::__private::miden_protocol),
+        )
+    }
+}
+
+impl Default for RuntimePaths {
+    fn default() -> Self {
+        Self::new(
+            quote!(::miden_field),
+            quote!(::miden_field_repr),
+            quote!(::miden_note_schema),
+            quote!(::miden_protocol),
+        )
+    }
+}
+
+/// Generates Rust host-profile types and structural felt conversion helpers.
+pub fn generate_host_types(
+    schema: &NoteStorageSchema,
+    runtime: &RuntimePaths,
+) -> Result<GeneratedTypes, CodegenError> {
+    schema
+        .validate_native_leaf_shapes()
+        .map_err(|error| CodegenError::new(error.to_string()))?;
+    let root = schema.root();
+    let root_fqn = root
+        .fqn()
+        .ok_or_else(|| CodegenError::new("the note storage root does not have a WIT FQN"))?;
+    let root_name = root
+        .name()
+        .ok_or_else(|| CodegenError::new("the note storage root does not have a WIT name"))?;
+
+    let mut definitions = Vec::new();
+    let mut seen = BTreeSet::new();
+    collect_named_types(root, &mut seen, &mut definitions)?;
+
+    let mut rust_names = BTreeMap::new();
+    let mut used_names = BTreeMap::<String, String>::new();
+    for definition in &definitions {
+        let fqn = definition.fqn().expect("collected named types always have a FQN");
+        let name = definition.name().expect("collected named types always have a name");
+        let ident = type_ident(name);
+        if let Some(existing) = used_names.insert(ident.to_string(), fqn.to_owned())
+            && existing != fqn
+        {
+            return Err(CodegenError::new(format!(
+                "WIT types `{existing}` and `{fqn}` both map to Rust type `{ident}`"
+            )));
+        }
+        rust_names.insert(fqn.to_owned(), ident);
+    }
+
+    let root_ident = rust_names.get(root_fqn).cloned().unwrap_or_else(|| type_ident(root_name));
+    let helper_traits = generate_helper_traits(runtime);
+    let mut felt_repr_support = FeltReprSupport::default();
+    let items = definitions
+        .iter()
+        .map(|definition| generate_type(definition, &rust_names, runtime, &mut felt_repr_support))
+        .collect::<Result<Vec<_>, _>>()?;
+    let type_idents = definitions
+        .iter()
+        .map(|definition| {
+            rust_names
+                .get(definition.fqn().expect("generated types have an FQN"))
+                .expect("generated types have a Rust name")
+                .clone()
+        })
+        .collect();
+    let has_nested_named_types = definitions
+        .iter()
+        .any(|definition| definition.fqn().is_some_and(|fqn| fqn != root_fqn));
+
+    Ok(GeneratedTypes {
+        tokens: quote! {
+            #helper_traits
+            #(#items)*
+        },
+        root_ident,
+        type_idents,
+        has_nested_named_types,
+    })
+}
+
+/// Collects reachable named records and variants, excluding mapped protocol leaves.
+fn collect_named_types<'a>(
+    ty: &'a SchemaType,
+    seen: &mut BTreeSet<String>,
+    definitions: &mut Vec<&'a SchemaType>,
+) -> Result<(), CodegenError> {
+    if ty.standard_leaf().is_some() {
+        return Ok(());
+    }
+
+    let is_definition = matches!(ty.kind(), SchemaTypeKind::Record(_) | SchemaTypeKind::Variant(_));
+    if is_definition {
+        let fqn = ty.fqn().ok_or_else(|| {
+            CodegenError::new("anonymous WIT records and variants cannot be emitted as Rust types")
+        })?;
+        ty.name().ok_or_else(|| {
+            CodegenError::new(format!("WIT type `{fqn}` does not have a local name"))
+        })?;
+        if !seen.insert(fqn.to_owned()) {
+            return Ok(());
+        }
+        definitions.push(ty);
+    }
+
+    match ty.kind() {
+        SchemaTypeKind::Record(fields) => {
+            for field in fields {
+                collect_named_types(field.ty(), seen, definitions)?;
+            }
+        }
+        SchemaTypeKind::Option(payload) => collect_named_types(payload, seen, definitions)?,
+        SchemaTypeKind::Variant(cases) => {
+            for payload in cases.iter().filter_map(SchemaCase::payload) {
+                collect_named_types(payload, seen, definitions)?;
+            }
+        }
+        SchemaTypeKind::Felt | SchemaTypeKind::Primitive(_) => {}
+    }
+    Ok(())
+}
+
+/// Generates the private traits that keep protocol-leaf order separate from foreign trait impls.
+fn generate_helper_traits(runtime: &RuntimePaths) -> TokenStream {
+    let RuntimePaths {
+        miden_field,
+        miden_field_repr,
+        miden_note_schema,
+        miden_protocol,
+    } = runtime;
+    let primitive_impls = [
+        quote!(u64),
+        quote!(u32),
+        quote!(u8),
+        quote!(bool),
+        quote!(#miden_field::Felt),
+        quote!(#miden_field::Word),
+    ]
+    .into_iter()
+    .map(|ty| {
+        quote! {
+            impl __MidenNoteEncode for #ty {
+                fn __write_note_felts(
+                    &self,
+                    writer: &mut #miden_field_repr::FeltWriter<'_>,
+                ) -> #miden_note_schema::Result<()> {
+                    #miden_field_repr::ToFeltRepr::write_felt_repr(self, writer);
+                    Ok(())
+                }
+            }
+
+            impl __MidenNoteDecode for #ty {
+                fn __read_note_felts(
+                    reader: &mut #miden_field_repr::FeltReader<'_>,
+                ) -> #miden_note_schema::Result<Self> {
+                    #miden_field_repr::FromFeltRepr::from_felt_repr(reader).map_err(|error| {
+                        #miden_note_schema::Error::new(format!(
+                            "failed to decode {} from note storage: {error}",
+                            stringify!(#ty),
+                        ))
+                    })
+                }
+            }
+        }
+    });
+
+    quote! {
+        #[doc(hidden)]
+        trait __MidenNoteEncode {
+            fn __write_note_felts(
+                &self,
+                writer: &mut #miden_field_repr::FeltWriter<'_>,
+            ) -> #miden_note_schema::Result<()>;
+        }
+
+        #[doc(hidden)]
+        trait __MidenNoteDecode: ::core::marker::Sized {
+            fn __read_note_felts(
+                reader: &mut #miden_field_repr::FeltReader<'_>,
+            ) -> #miden_note_schema::Result<Self>;
+        }
+
+        #(#primitive_impls)*
+
+        impl __MidenNoteEncode for #miden_protocol::account::AccountId {
+            fn __write_note_felts(
+                &self,
+                writer: &mut #miden_field_repr::FeltWriter<'_>,
+            ) -> #miden_note_schema::Result<()> {
+                // The WIT record declares prefix before suffix.
+                writer.write(self.prefix().as_felt());
+                writer.write(self.suffix());
+                Ok(())
+            }
+        }
+
+        impl __MidenNoteDecode for #miden_protocol::account::AccountId {
+            fn __read_note_felts(
+                reader: &mut #miden_field_repr::FeltReader<'_>,
+            ) -> #miden_note_schema::Result<Self> {
+                let prefix = reader.read().map_err(|error| {
+                    #miden_note_schema::Error::new(format!(
+                        "failed to decode account-id prefix: {error}"
+                    ))
+                })?;
+                let suffix = reader.read().map_err(|error| {
+                    #miden_note_schema::Error::new(format!(
+                        "failed to decode account-id suffix: {error}"
+                    ))
+                })?;
+                // WIT declares prefix before suffix, but the constructor takes suffix first.
+                #miden_protocol::account::AccountId::try_from_elements(suffix, prefix).map_err(
+                    |error| {
+                        #miden_note_schema::Error::new(format!(
+                            "invalid account-id in note storage: {error}"
+                        ))
+                    },
+                )
+            }
+        }
+
+        impl __MidenNoteEncode for #miden_protocol::asset::AssetAmount {
+            fn __write_note_felts(
+                &self,
+                writer: &mut #miden_field_repr::FeltWriter<'_>,
+            ) -> #miden_note_schema::Result<()> {
+                writer.write(#miden_field::Felt::from(*self));
+                Ok(())
+            }
+        }
+
+        impl __MidenNoteDecode for #miden_protocol::asset::AssetAmount {
+            fn __read_note_felts(
+                reader: &mut #miden_field_repr::FeltReader<'_>,
+            ) -> #miden_note_schema::Result<Self> {
+                let value = reader.read().map_err(|error| {
+                    #miden_note_schema::Error::new(format!(
+                        "failed to decode asset-amount: {error}"
+                    ))
+                })?;
+                #miden_protocol::asset::AssetAmount::try_from(value).map_err(|error| {
+                    #miden_note_schema::Error::new(format!(
+                        "invalid asset-amount in note storage: {error}"
+                    ))
+                })
+            }
+        }
+
+        impl<T> __MidenNoteEncode for ::core::option::Option<T>
+        where
+            T: __MidenNoteEncode,
+        {
+            fn __write_note_felts(
+                &self,
+                writer: &mut #miden_field_repr::FeltWriter<'_>,
+            ) -> #miden_note_schema::Result<()> {
+                match self {
+                    None => writer.write(#miden_field::Felt::ZERO),
+                    Some(value) => {
+                        writer.write(#miden_field::Felt::ONE);
+                        value.__write_note_felts(writer)?;
+                    }
+                }
+                Ok(())
+            }
+        }
+
+        impl<T> __MidenNoteDecode for ::core::option::Option<T>
+        where
+            T: __MidenNoteDecode,
+        {
+            fn __read_note_felts(
+                reader: &mut #miden_field_repr::FeltReader<'_>,
+            ) -> #miden_note_schema::Result<Self> {
+                let tag = reader.read().map_err(|error| {
+                    #miden_note_schema::Error::new(format!(
+                        "failed to decode option tag: {error}"
+                    ))
+                })?;
+                match tag.as_canonical_u64() {
+                    0 => Ok(None),
+                    1 => Ok(Some(T::__read_note_felts(reader)?)),
+                    tag => Err(#miden_note_schema::Error::new(format!(
+                        "invalid option tag {tag}; expected 0 or 1"
+                    ))),
+                }
+            }
+        }
+    }
+}
+
+/// Generates one Rust record or variant and its structural conversion helpers.
+fn generate_type(
+    definition: &SchemaType,
+    rust_names: &BTreeMap<String, Ident>,
+    runtime: &RuntimePaths,
+    felt_repr_support: &mut FeltReprSupport,
+) -> Result<TokenStream, CodegenError> {
+    let fqn = definition.fqn().expect("generated type definitions always have a FQN");
+    let ident = rust_names.get(fqn).expect("every generated type has a Rust identifier");
+    let docs = type_docs(definition, fqn);
+    // Every trait is named through its absolute path. A generated type takes the name of its
+    // WIT type, so a schema may declare a type called `Clone`, `Debug`, or `Sized`.
+    let derives = if felt_repr_support.supports_native_felt_repr(definition) {
+        let miden_field_repr = &runtime.miden_field_repr;
+        // `quote` prints `::` paths with spaces around each separator. The attribute value must
+        // be one path the derive macro can parse, so the spaces come out.
+        let crate_path = Literal::string(&miden_field_repr.to_string().replace(' ', ""));
+        quote! {
+            #[derive(
+                ::core::clone::Clone,
+                ::core::fmt::Debug,
+                ::core::cmp::PartialEq,
+                ::core::cmp::Eq,
+                #miden_field_repr::ToFeltRepr,
+                #miden_field_repr::FromFeltRepr,
+            )]
+            #[felt_repr(crate_path = #crate_path)]
+        }
+    } else {
+        quote! {
+            #[derive(
+                ::core::clone::Clone,
+                ::core::fmt::Debug,
+                ::core::cmp::PartialEq,
+                ::core::cmp::Eq,
+            )]
+        }
+    };
+
+    let (item, encode_impl, decode_impl) = match definition.kind() {
+        SchemaTypeKind::Record(fields) => {
+            generate_record(ident, fields, rust_names, &docs, &derives, runtime)?
+        }
+        SchemaTypeKind::Variant(cases) => {
+            generate_variant(ident, cases, rust_names, &docs, &derives, runtime)?
+        }
+        _ => {
+            return Err(CodegenError::new(format!(
+                "named WIT type `{fqn}` is not a record or variant"
+            )));
+        }
+    };
+
+    Ok(quote! {
+        #item
+
+        impl #ident {
+            /// The canonical fully-qualified WIT name for this type.
+            pub const WIT_FQN: &'static str = #fqn;
+        }
+
+        #encode_impl
+        #decode_impl
+    })
+}
+
+/// Generates a Rust struct in WIT declaration order.
+fn generate_record(
+    ident: &Ident,
+    fields: &[SchemaField],
+    rust_names: &BTreeMap<String, Ident>,
+    docs: &TokenStream,
+    derives: &TokenStream,
+    runtime: &RuntimePaths,
+) -> Result<(TokenStream, TokenStream, TokenStream), CodegenError> {
+    let miden_field_repr = &runtime.miden_field_repr;
+    let miden_note_schema = &runtime.miden_note_schema;
+    let rust_fields = fields
+        .iter()
+        .map(|field| {
+            let ident = value_ident(field.name());
+            let ty = rust_type(field.ty(), rust_names, runtime)?;
+            let docs = field_docs(field);
+            Ok((ident, ty, docs))
+        })
+        .collect::<Result<Vec<_>, CodegenError>>()?;
+    let field_idents = rust_fields.iter().map(|(ident, ..)| ident).collect::<Vec<_>>();
+    let field_types = rust_fields.iter().map(|(_, ty, _)| ty).collect::<Vec<_>>();
+    let field_docs = rust_fields.iter().map(|(_, _, docs)| docs).collect::<Vec<_>>();
+
+    let item = quote! {
+        #docs
+        #derives
+        pub struct #ident {
+            #(
+                #field_docs
+                pub #field_idents: #field_types,
+            )*
+        }
+    };
+    let encode_impl = quote! {
+        impl __MidenNoteEncode for #ident {
+            fn __write_note_felts(
+                &self,
+                writer: &mut #miden_field_repr::FeltWriter<'_>,
+            ) -> #miden_note_schema::Result<()> {
+                #(self.#field_idents.__write_note_felts(writer)?;)*
+                Ok(())
+            }
+        }
+    };
+    let decode_impl = quote! {
+        impl __MidenNoteDecode for #ident {
+            fn __read_note_felts(
+                reader: &mut #miden_field_repr::FeltReader<'_>,
+            ) -> #miden_note_schema::Result<Self> {
+                Ok(Self {
+                    #(#field_idents: <#field_types as __MidenNoteDecode>::__read_note_felts(reader)?,)*
+                })
+            }
+        }
+    };
+    Ok((item, encode_impl, decode_impl))
+}
+
+/// Generates a Rust enum with declaration-ordinal tags.
+fn generate_variant(
+    ident: &Ident,
+    cases: &[SchemaCase],
+    rust_names: &BTreeMap<String, Ident>,
+    docs: &TokenStream,
+    derives: &TokenStream,
+    runtime: &RuntimePaths,
+) -> Result<(TokenStream, TokenStream, TokenStream), CodegenError> {
+    let miden_field = &runtime.miden_field;
+    let miden_field_repr = &runtime.miden_field_repr;
+    let miden_note_schema = &runtime.miden_note_schema;
+    let rust_cases = cases
+        .iter()
+        .map(|case| {
+            let ident = type_ident(case.name());
+            let payload =
+                case.payload().map(|ty| rust_type(ty, rust_names, runtime)).transpose()?;
+            let docs = case_docs(case);
+            Ok((ident, payload, docs))
+        })
+        .collect::<Result<Vec<_>, CodegenError>>()?;
+
+    let declarations = rust_cases.iter().map(|(case, payload, docs)| match payload {
+        Some(payload) => quote! {
+            #docs
+            #case(#payload),
+        },
+        None => quote! {
+            #docs
+            #case,
+        },
+    });
+    let encode_arms = rust_cases.iter().enumerate().map(|(ordinal, (case, payload, _))| {
+        let ordinal = ordinal as u32;
+        match payload {
+            Some(_) => quote! {
+                Self::#case(value) => {
+                    writer.write(#miden_field::Felt::from_u32(#ordinal));
+                    value.__write_note_felts(writer)?;
+                }
+            },
+            None => quote! {
+                Self::#case => {
+                    writer.write(#miden_field::Felt::from_u32(#ordinal));
+                }
+            },
+        }
+    });
+    let decode_arms = rust_cases.iter().enumerate().map(|(ordinal, (case, payload, _))| {
+        let ordinal = ordinal as u32;
+        match payload {
+            Some(payload) => quote! {
+                #ordinal => Ok(Self::#case(
+                    <#payload as __MidenNoteDecode>::__read_note_felts(reader)?,
+                )),
+            },
+            None => quote! { #ordinal => Ok(Self::#case), },
+        }
+    });
+    let case_count = cases.len();
+
+    let item = quote! {
+        #docs
+        #derives
+        pub enum #ident {
+            #(#declarations)*
+        }
+    };
+    let encode_impl = quote! {
+        impl __MidenNoteEncode for #ident {
+            fn __write_note_felts(
+                &self,
+                writer: &mut #miden_field_repr::FeltWriter<'_>,
+            ) -> #miden_note_schema::Result<()> {
+                match self {
+                    #(#encode_arms)*
+                }
+                Ok(())
+            }
+        }
+    };
+    let decode_impl = quote! {
+        impl __MidenNoteDecode for #ident {
+            fn __read_note_felts(
+                reader: &mut #miden_field_repr::FeltReader<'_>,
+            ) -> #miden_note_schema::Result<Self> {
+                let tag = reader.read_u32().map_err(|error| {
+                    #miden_note_schema::Error::new(format!(
+                        "failed to decode {} tag: {error}",
+                        stringify!(#ident),
+                    ))
+                })?;
+                match tag {
+                    #(#decode_arms)*
+                    tag => Err(#miden_note_schema::Error::new(format!(
+                        "invalid {} tag {tag}; expected a declaration ordinal below {}",
+                        stringify!(#ident),
+                        #case_count,
+                    ))),
+                }
+            }
+        }
+    };
+    Ok((item, encode_impl, decode_impl))
+}
+
+/// Maps one schema type to its host-profile Rust type.
+fn rust_type(
+    ty: &SchemaType,
+    rust_names: &BTreeMap<String, Ident>,
+    runtime: &RuntimePaths,
+) -> Result<TokenStream, CodegenError> {
+    if let Some(mapped) = mapped_leaf(ty, runtime) {
+        return Ok(mapped);
+    }
+    if let Some(fqn) = ty.fqn()
+        && let Some(ident) = rust_names.get(fqn)
+    {
+        return Ok(quote!(#ident));
+    }
+
+    match ty.kind() {
+        SchemaTypeKind::Primitive(PrimitiveType::U64) => Ok(quote!(u64)),
+        SchemaTypeKind::Primitive(PrimitiveType::U32) => Ok(quote!(u32)),
+        SchemaTypeKind::Primitive(PrimitiveType::U8) => Ok(quote!(u8)),
+        SchemaTypeKind::Primitive(PrimitiveType::Bool) => Ok(quote!(bool)),
+        SchemaTypeKind::Option(payload) => {
+            let payload = rust_type(payload, rust_names, runtime)?;
+            Ok(quote!(::core::option::Option<#payload>))
+        }
+        SchemaTypeKind::Record(_) | SchemaTypeKind::Variant(_) => Err(CodegenError::new(format!(
+            "named WIT type `{}` was not collected for Rust generation",
+            ty.fqn().or(ty.name()).unwrap_or("<anonymous>")
+        ))),
+        SchemaTypeKind::Felt => {
+            let miden_field = &runtime.miden_field;
+            Ok(quote!(#miden_field::Felt))
+        }
+    }
+}
+
+/// Returns the native Rust type for one standard WIT leaf.
+fn mapped_leaf(ty: &SchemaType, runtime: &RuntimePaths) -> Option<TokenStream> {
+    let RuntimePaths {
+        miden_field,
+        miden_protocol,
+        ..
+    } = runtime;
+    match ty.standard_leaf()? {
+        StandardLeaf::Felt => Some(quote!(#miden_field::Felt)),
+        StandardLeaf::Word => Some(quote!(#miden_field::Word)),
+        StandardLeaf::AccountId => Some(quote!(#miden_protocol::account::AccountId)),
+        StandardLeaf::AssetAmount => Some(quote!(#miden_protocol::asset::AssetAmount)),
+    }
+}
+
+/// Memoized answers for the felt-repr support walk, keyed by resolved node identity.
+#[derive(Default)]
+struct FeltReprSupport {
+    answers: HashMap<*const SchemaType, bool>,
+}
+
+impl FeltReprSupport {
+    /// Returns true when all fields implement the native felt-repr traits without protocol
+    /// adapters.
+    ///
+    /// The schema model is a DAG that shares one node per resolved WIT type, so the answers are
+    /// memoized by node identity. The walk is then linear in the number of distinct types instead
+    /// of the size of the expanded tree.
+    fn supports_native_felt_repr(&mut self, ty: &SchemaType) -> bool {
+        let key = ty as *const SchemaType;
+        if let Some(answer) = self.answers.get(&key) {
+            return *answer;
+        }
+        let answer = self.compute(ty);
+        self.answers.insert(key, answer);
+        answer
+    }
+
+    /// Answers the felt-repr question for one node from its children.
+    fn compute(&mut self, ty: &SchemaType) -> bool {
+        if matches!(ty.standard_leaf(), Some(StandardLeaf::AccountId | StandardLeaf::AssetAmount)) {
+            return false;
+        }
+        match ty.kind() {
+            SchemaTypeKind::Felt | SchemaTypeKind::Primitive(_) => true,
+            SchemaTypeKind::Record(fields) => {
+                fields.iter().all(|field| self.supports_native_felt_repr(field.ty()))
+            }
+            SchemaTypeKind::Option(payload) => self.supports_native_felt_repr(payload),
+            SchemaTypeKind::Variant(cases) => cases.iter().all(|case| {
+                case.payload().is_none_or(|payload| self.supports_native_felt_repr(payload))
+            }),
+        }
+    }
+}
+
+/// Produces documentation for a generated WIT type.
+fn type_docs(ty: &SchemaType, fqn: &str) -> TokenStream {
+    let docs = ty
+        .docs()
+        .map(str::to_owned)
+        .unwrap_or_else(|| format!("Rust binding for WIT type `{fqn}`."));
+    quote!(#[doc = #docs])
+}
+
+/// Produces documentation for a generated record field.
+fn field_docs(field: &SchemaField) -> TokenStream {
+    let docs = field
+        .docs()
+        .map(str::to_owned)
+        .unwrap_or_else(|| format!("Value of the WIT `{}` field.", field.name()));
+    quote!(#[doc = #docs])
+}
+
+/// Produces documentation for a generated variant case.
+fn case_docs(case: &SchemaCase) -> TokenStream {
+    let docs = case
+        .docs()
+        .map(str::to_owned)
+        .unwrap_or_else(|| format!("WIT `{}` case.", case.name()));
+    quote!(#[doc = #docs])
+}
+
+/// Returns the Rust type name the generator gives one WIT type or case name.
+///
+/// A caller that maps generated types back to WIT names uses this function, so the two sides
+/// agree on the upper camel case conversion and on the escape of a Rust reserved word.
+pub fn generated_type_ident(name: &str) -> String {
+    type_ident(name).to_string()
+}
+
+/// Converts a WIT type or case name to a Rust type identifier.
+fn type_ident(name: &str) -> Ident {
+    rust_ident(&name.to_upper_camel_case())
+}
+
+/// Converts a WIT field name to a Rust value identifier.
+fn value_ident(name: &str) -> Ident {
+    rust_ident(&name.replace('-', "_").to_snake_case())
+}
+
+/// Creates an identifier and avoids Rust reserved words.
+fn rust_ident(name: &str) -> Ident {
+    const RESERVED: &[&str] = &[
+        "Self", "abstract", "as", "async", "await", "become", "box", "break", "const", "continue",
+        "crate", "do", "dyn", "else", "enum", "extern", "false", "final", "fn", "for", "gen", "if",
+        "impl", "in", "let", "loop", "macro", "match", "mod", "move", "mut", "override", "priv",
+        "pub", "ref", "return", "self", "static", "struct", "super", "trait", "true", "try",
+        "type", "typeof", "union", "unsafe", "unsized", "use", "virtual", "where", "while",
+        "yield",
+    ];
+    if RESERVED.contains(&name) {
+        format_ident!("{name}_")
+    } else {
+        Ident::new(name, Span::call_site())
+    }
+}
+
+#[cfg(test)]
+mod tests;
diff --git a/sdk/note-schema/codegen/src/tests.rs b/sdk/note-schema/codegen/src/tests.rs
new file mode 100644
index 0000000000..2e61c417eb
--- /dev/null
+++ b/sdk/note-schema/codegen/src/tests.rs
@@ -0,0 +1,126 @@
+//! Tests for host-profile type generation.
+
+use miden_note_schema::NoteStorageSchema;
+
+use crate::{RuntimePaths, generate_host_types};
+
+const P2ID_SCHEMA: &str = r#"
+package example:p2id-schema@1.0.0;
+
+use miden:base/core-types@1.0.0;
+
+interface note-storage {
+    use core-types.{account-id};
+
+    record p2id-note {
+        target-account-id: account-id,
+    }
+
+    type storage = p2id-note;
+}
+
+package miden:base@1.0.0 {
+    interface core-types {
+        record felt { inner: f32 }
+        record account-id { prefix: felt, suffix: felt }
+    }
+}
+"#;
+
+const CUSTOM_SCHEMA: &str = r#"
+package example:dex-schema@1.0.0;
+
+use miden:base/core-types@1.0.0;
+
+interface note-storage {
+    use core-types.{account-id};
+
+    record limit-price {
+        numerator: u64,
+        denominator: u64,
+    }
+
+    variant order-kind {
+        market,
+        limit(limit-price),
+    }
+
+    record dex-note {
+        target: account-id,
+        kind: order-kind,
+    }
+
+    type storage = dex-note;
+}
+
+package miden:base@1.0.0 {
+    interface core-types {
+        record felt { inner: f32 }
+        record account-id { prefix: felt, suffix: felt }
+    }
+}
+"#;
+
+const EMBEDDED_CORE_SCHEMA: &str = r#"
+package example:embedded-core-schema@1.0.0;
+
+use miden:base/core-types@1.0.0;
+
+interface note-storage {
+    use core-types.{digest};
+    record embedded-core-note { value: digest }
+    type storage = embedded-core-note;
+}
+
+package miden:base@1.0.0 {
+    interface core-types {
+        record felt { inner: f32 }
+        record word { a: felt, b: felt, c: felt, d: felt }
+        record digest { inner: word }
+    }
+}
+"#;
+
+/// Formats generated tokens as Rust source.
+fn generate(wit: &str) -> (String, bool, String) {
+    let schema = NoteStorageSchema::from_wit_text(wit).unwrap();
+    let generated = generate_host_types(&schema, &RuntimePaths::default()).unwrap();
+    let file: syn::File = syn::parse2(generated.tokens().clone()).unwrap();
+    (
+        prettyplease::unparse(&file),
+        generated.has_nested_named_types(),
+        generated.root_ident().to_string(),
+    )
+}
+
+#[test]
+fn maps_protocol_leaf_and_root_type() {
+    let (source, has_nested_named_types, root) = generate(P2ID_SCHEMA);
+    assert_eq!(root, "P2idNote");
+    assert!(!has_nested_named_types);
+    assert!(source.contains("pub target_account_id: ::miden_protocol::account::AccountId"));
+    assert!(source.contains("pub const WIT_FQN"));
+    assert!(source.contains("self.prefix().as_felt()"));
+}
+
+#[test]
+fn derives_native_repr_for_custom_records_and_variants() {
+    let (source, has_nested_named_types, root) = generate(CUSTOM_SCHEMA);
+    assert_eq!(root, "DexNote");
+    assert!(has_nested_named_types);
+    assert!(source.contains("pub struct LimitPrice"));
+    assert!(source.contains("pub enum OrderKind"));
+    assert!(source.matches("::miden_field_repr::ToFeltRepr").count() >= 2);
+    assert!(source.contains("example:dex-schema/note-storage@1.0.0.limit-price"));
+}
+
+#[test]
+fn generates_nonstandard_embedded_core_record_as_schema_owned_type() {
+    let (source, has_nested_named_types, root) = generate(EMBEDDED_CORE_SCHEMA);
+
+    assert_eq!(root, "EmbeddedCoreNote");
+    assert!(has_nested_named_types);
+    assert!(source.contains("pub struct Digest"));
+    assert!(source.contains("pub value: Digest"));
+    assert!(!source.contains("pub struct Word"));
+}
diff --git a/sdk/note-schema/src/artifact.rs b/sdk/note-schema/src/artifact.rs
new file mode 100644
index 0000000000..61f8ba08cc
--- /dev/null
+++ b/sdk/note-schema/src/artifact.rs
@@ -0,0 +1,497 @@
+//! Miden package discovery for note schema macros.
+
+use std::{
+    env, fs,
+    path::{Path, PathBuf},
+};
+
+use miden_mast_package::Package;
+use midenc_frontend_wasm_metadata::package_cache;
+
+use crate::{Error, NoteStorageSchema, Result};
+
+/// A loaded package artifact and its note storage schema.
+pub struct NotePackageArtifact {
+    path: PathBuf,
+    schema: NoteStorageSchema,
+    tracked_inputs: Vec<PathBuf>,
+}
+
+impl NotePackageArtifact {
+    /// Returns the exact package path used to load the schema.
+    pub fn path(&self) -> &Path {
+        &self.path
+    }
+
+    /// Returns the schema loaded from the package.
+    pub const fn schema(&self) -> &NoteStorageSchema {
+        &self.schema
+    }
+
+    /// Returns every manifest the resolver read to derive the package file name.
+    ///
+    /// A caller registers these files as rebuild inputs next to the package itself. A rename of
+    /// the note package changes a manifest but leaves the old package file in place, so nothing
+    /// else tells the caller that the selection changed.
+    pub fn tracked_inputs(&self) -> &[PathBuf] {
+        &self.tracked_inputs
+    }
+}
+
+/// Resolves package artifacts for one note macro crate.
+pub struct NotePackageResolver<'a> {
+    macro_crate: &'a str,
+}
+
+impl<'a> NotePackageResolver<'a> {
+    /// Creates a resolver whose diagnostics name `macro_crate`.
+    pub const fn new(macro_crate: &'a str) -> Self {
+        Self { macro_crate }
+    }
+
+    /// Loads the package built by a Miden project.
+    pub fn from_project(&self, project: &str) -> Result<NotePackageArtifact> {
+        let project_dir = self.resolve_manifest_path(project)?;
+        if !project_dir.is_dir() {
+            return Err(Error::new(format!(
+                "{}: note project directory '{}' does not exist",
+                self.macro_crate,
+                project_dir.display()
+            )));
+        }
+        let identity = project_identity(&project_dir);
+        let stems = &identity.stems;
+        let cache_dir = package_cache_dir()
+            .map_err(|error| Error::new(format!("{}: {error}", self.macro_crate)))?;
+        let package_path = resolve_project_package(&project_dir, stems, cache_dir.as_deref())
+            .map_err(|error| Error::new(format!("{}: {error}", self.macro_crate)))?
+            .ok_or_else(|| {
+                Error::new(missing_project_package_message(
+                    self.macro_crate,
+                    &project_dir,
+                    cache_dir.as_deref(),
+                    stems,
+                ))
+            })?;
+        self.load_package(package_path, identity.manifests)
+    }
+
+    /// Loads one exact Miden package path.
+    pub fn from_package(&self, package: &str) -> Result<NotePackageArtifact> {
+        let package_path = self.resolve_manifest_path(package)?;
+        if !package_path.is_file() {
+            return Err(Error::new(format!(
+                "{}: Miden package '{}' does not exist",
+                self.macro_crate,
+                package_path.display()
+            )));
+        }
+        self.load_package(package_path, Vec::new())
+    }
+
+    /// Resolves one path relative to the consuming crate manifest.
+    fn resolve_manifest_path(&self, value: &str) -> Result<PathBuf> {
+        let path = PathBuf::from(value);
+        if path.is_absolute() {
+            return Ok(path);
+        }
+        let manifest_dir = env::var_os("CARGO_MANIFEST_DIR").ok_or_else(|| {
+            Error::new(format!(
+                "{}: CARGO_MANIFEST_DIR is not set during macro expansion",
+                self.macro_crate
+            ))
+        })?;
+        Ok(PathBuf::from(manifest_dir).join(path))
+    }
+
+    /// Loads the package and its unique schema section.
+    fn load_package(
+        &self,
+        path: PathBuf,
+        tracked_inputs: Vec<PathBuf>,
+    ) -> Result<NotePackageArtifact> {
+        let path = path.canonicalize().map_err(|error| {
+            Error::new(format!(
+                "{}: failed to resolve Miden package '{}': {error}",
+                self.macro_crate,
+                path.display()
+            ))
+        })?;
+        let package = Package::deserialize_from_file(&path).map_err(|error| {
+            Error::new(format!(
+                "{}: failed to read Miden package '{}': {error}",
+                self.macro_crate,
+                path.display()
+            ))
+        })?;
+        let schema = NoteStorageSchema::from_package(&package).map_err(|error| {
+            Error::new(format!(
+                "{}: failed to read note storage schema from '{}': {error}",
+                self.macro_crate,
+                path.display()
+            ))
+        })?;
+        Ok(NotePackageArtifact {
+            path,
+            schema,
+            tracked_inputs,
+        })
+    }
+}
+
+/// Resolves one project package by package identity and output-directory priority.
+///
+/// A set package-cache directory replaces the search: the build owns that directory, so the
+/// output directories of the project are not consulted.
+fn resolve_project_package(
+    project_dir: &Path,
+    stems: &[String],
+    cache_dir: Option<&Path>,
+) -> Result<Option<PathBuf>> {
+    if let Some(cache_dir) = cache_dir {
+        return Ok(find_project_package_in_cache(cache_dir, stems));
+    }
+
+    let profiles = candidate_profiles();
+    for output_dir in project_output_dirs(project_dir, &profiles) {
+        if let Some(package) = find_project_package_in_dir(&output_dir, stems)? {
+            return Ok(Some(package));
+        }
+    }
+    Ok(None)
+}
+
+/// Returns the configured package cache directory, treating an empty value as unset.
+fn package_cache_dir() -> Result<Option<PathBuf>> {
+    env::var_os(package_cache::PACKAGE_CACHE_ENV)
+        .filter(|value| !value.is_empty())
+        .map(|value| absolutize(PathBuf::from(value)))
+        .transpose()
+}
+
+/// Returns Cargo and Miden profile names in lookup order.
+fn candidate_profiles() -> Vec<String> {
+    let mut profiles = Vec::new();
+    if let Ok(profile) = env::var("PROFILE") {
+        push_profile(&mut profiles, profile);
+    }
+    push_profile(&mut profiles, "release".to_owned());
+    push_profile(&mut profiles, "debug".to_owned());
+    push_profile(&mut profiles, "dev".to_owned());
+    profiles
+}
+
+/// Returns candidate output directories for one project.
+fn project_output_dirs(project_dir: &Path, profiles: &[String]) -> Vec<PathBuf> {
+    let mut dirs = Vec::new();
+
+    // Keep this policy in parity with base-macros/src/dependency_package.rs. The crates cannot
+    // share the implementation without adding the full SDK macro dependency graph.
+    push_profile_dirs(&mut dirs, project_dir.join("target"), profiles);
+    push_manifest_ancestor_target_profile_dirs(&mut dirs, project_dir, profiles);
+    push_ancestor_target_profile_dirs(&mut dirs, project_dir, profiles);
+
+    if let Some(target_dir) = env::var_os("CARGO_TARGET_DIR") {
+        push_profile_dirs(&mut dirs, PathBuf::from(target_dir), profiles);
+    }
+    if let Some(out_dir) = env::var_os("OUT_DIR") {
+        for ancestor in Path::new(&out_dir).ancestors() {
+            push_profile_dirs(&mut dirs, ancestor.to_path_buf(), profiles);
+        }
+    }
+    if let Ok(current_dir) = env::current_dir() {
+        push_profile_dirs(&mut dirs, current_dir.join("target"), profiles);
+        push_manifest_ancestor_target_profile_dirs(&mut dirs, &current_dir, profiles);
+        push_ancestor_target_profile_dirs(&mut dirs, &current_dir, profiles);
+    }
+    dirs
+}
+
+/// Adds `target/miden/<profile>` directories while preserving order.
+fn push_profile_dirs(dirs: &mut Vec<PathBuf>, target_root: PathBuf, profiles: &[String]) {
+    for profile in profiles {
+        let dir = target_root.join("miden").join(profile);
+        if !dirs.contains(&dir) {
+            dirs.push(dir);
+        }
+    }
+}
+
+/// Adds target directories found among the ancestors of `path`.
+fn push_ancestor_target_profile_dirs(dirs: &mut Vec<PathBuf>, path: &Path, profiles: &[String]) {
+    for ancestor in path.ancestors() {
+        if ancestor.file_name().is_some_and(|name| name == "target") {
+            push_profile_dirs(dirs, ancestor.to_path_buf(), profiles);
+        }
+    }
+}
+
+/// Adds target directories for Cargo manifest ancestors of `path`.
+fn push_manifest_ancestor_target_profile_dirs(
+    dirs: &mut Vec<PathBuf>,
+    path: &Path,
+    profiles: &[String],
+) {
+    for ancestor in path.ancestors() {
+        if ancestor.join("Cargo.toml").is_file() || ancestor.join("Cargo.lock").is_file() {
+            push_profile_dirs(dirs, ancestor.join("target"), profiles);
+        }
+    }
+}
+
+/// Finds a project package in the build-owned package cache.
+fn find_project_package_in_cache(dir: &Path, stems: &[String]) -> Option<PathBuf> {
+    stems
+        .iter()
+        .map(|stem| dir.join(package_cache::package_file_name(stem)))
+        .find(|path| path.is_file())
+}
+
+/// Finds a package in one output directory by ordered package identity.
+fn find_project_package_in_dir(dir: &Path, stems: &[String]) -> Result<Option<PathBuf>> {
+    if !dir.is_dir() {
+        return Ok(None);
+    }
+
+    let packages = fs::read_dir(dir)
+        .map_err(|error| Error::new(format!("failed to read '{}': {error}", dir.display())))?
+        .collect::<core::result::Result<Vec<_>, _>>()
+        .map_err(|error| {
+            Error::new(format!("failed to read an entry in '{}': {error}", dir.display()))
+        })?
+        .into_iter()
+        .map(|entry| entry.path())
+        .filter(|path| {
+            path.is_file() && path.extension().is_some_and(|extension| extension == "masp")
+        })
+        .collect::<Vec<_>>();
+
+    // The stems are ordered by identity. The canonical miden-project package name comes first,
+    // followed by legacy aliases. This matches base-macros/src/dependency_package.rs and prevents
+    // a newer legacy artifact from shadowing the canonical package.
+    for stem in stems {
+        if let Some(package) = packages
+            .iter()
+            .find(|path| path.file_stem().and_then(|value| value.to_str()) == Some(stem.as_str()))
+        {
+            return Ok(Some(package.clone()));
+        }
+    }
+    Ok(None)
+}
+
+/// The package file name stems of one project and the manifests they came from.
+struct ProjectIdentity {
+    /// Ordered package file name stems, canonical identity first.
+    stems: Vec<String>,
+    /// The manifests that were read, in the order they were read.
+    manifests: Vec<PathBuf>,
+}
+
+/// Returns ordered package filename stems for one project, and the manifests they came from.
+fn project_identity(project_dir: &Path) -> ProjectIdentity {
+    let mut stems = Vec::new();
+    let mut manifests = Vec::new();
+    for manifest in [project_dir.join("miden-project.toml"), project_dir.join("Cargo.toml")] {
+        if let Some(name) = package_name_from_manifest(&manifest) {
+            push_package_stem(&mut stems, &name);
+            manifests.push(manifest);
+        }
+    }
+    if let Some(name) = project_dir.file_name().and_then(|name| name.to_str()) {
+        push_package_stem(&mut stems, name);
+    }
+    ProjectIdentity { stems, manifests }
+}
+
+/// Reads a package name from one TOML manifest.
+fn package_name_from_manifest(manifest_path: &Path) -> Option<String> {
+    let manifest = fs::read_to_string(manifest_path).ok()?;
+    let manifest = manifest.parse::<toml::Table>().ok()?;
+    manifest
+        .get("package")
+        .and_then(toml::Value::as_table)
+        .and_then(|package| package.get("name"))
+        .and_then(toml::Value::as_str)
+        .map(ToOwned::to_owned)
+}
+
+/// Adds a package filename stem and its underscore alias.
+fn push_package_stem(stems: &mut Vec<String>, name: &str) {
+    if !name.is_empty() && !stems.iter().any(|existing| existing == name) {
+        stems.push(name.to_owned());
+    }
+    let normalized = name.replace('-', "_");
+    if !normalized.is_empty() && !stems.contains(&normalized) {
+        stems.push(normalized);
+    }
+}
+
+/// Makes a cache path absolute for generated `include_bytes!` inputs.
+fn absolutize(path: PathBuf) -> Result<PathBuf> {
+    if path.is_absolute() {
+        return Ok(path);
+    }
+    Ok(env::current_dir()
+        .map_err(|error| Error::new(format!("failed to resolve current directory: {error}")))?
+        .join(path))
+}
+
+/// Adds one profile name once.
+fn push_profile(profiles: &mut Vec<String>, profile: String) {
+    if !profile.is_empty() && !profiles.contains(&profile) {
+        profiles.push(profile);
+    }
+}
+
+/// Formats the diagnostic for a project without a built package.
+fn missing_project_package_message(
+    macro_crate: &str,
+    project_dir: &Path,
+    cache_dir: Option<&Path>,
+    stems: &[String],
+) -> String {
+    let manifest = project_dir.join("Cargo.toml");
+    let build = if manifest.is_file() {
+        format!("cargo miden build --manifest-path {} --release", manifest.display())
+    } else {
+        "cargo miden build --release".to_owned()
+    };
+    if let Some(cache_dir) = cache_dir {
+        let expected_files = stems
+            .iter()
+            .map(|stem| format!("'{}'", package_cache::package_file_name(stem)))
+            .collect::<Vec<_>>()
+            .join(", ");
+        return format!(
+            "{macro_crate} could not find a built `.masp` package for note project '{}'. Expected \
+             one of these package names: {expected_files}. Searched {} directory '{}'. Build the \
+             note project first with `{build}` so the package is available during macro expansion.",
+            project_dir.display(),
+            package_cache::PACKAGE_CACHE_ENV,
+            cache_dir.display(),
+        );
+    }
+    format!(
+        "{macro_crate} could not find a built `.masp` package under '{}'. Build the note project \
+         first with `{build}`.",
+        project_dir.join("target/miden/<profile>").display()
+    )
+}
+
+#[cfg(test)]
+mod tests {
+    use std::fs;
+
+    use super::{
+        find_project_package_in_cache, find_project_package_in_dir,
+        missing_project_package_message, project_identity, project_output_dirs,
+    };
+
+    #[test]
+    fn canonical_project_identity_wins_over_legacy_aliases() {
+        let temp = tempfile::tempdir().unwrap();
+        fs::write(
+            temp.path().join("miden-project.toml"),
+            "[package]\nname='canonical-note'\nversion='0.1.0'",
+        )
+        .unwrap();
+        fs::write(temp.path().join("Cargo.toml"), "[package]\nname='legacy-note'\nversion='0.1.0'")
+            .unwrap();
+        let output = temp.path().join("output");
+        fs::create_dir(&output).unwrap();
+        fs::write(output.join("legacy-note.masp"), b"newer legacy package").unwrap();
+        fs::write(output.join("canonical-note.masp"), b"canonical package").unwrap();
+
+        let stems = project_identity(temp.path()).stems;
+        let selected = find_project_package_in_dir(&output, &stems).unwrap().unwrap();
+        assert_eq!(selected, output.join("canonical-note.masp"));
+    }
+
+    #[test]
+    fn tracked_inputs_name_the_manifests_that_were_read() {
+        let temp = tempfile::tempdir().unwrap();
+        fs::write(
+            temp.path().join("miden-project.toml"),
+            "[package]\nname='canonical-note'\nversion='0.1.0'",
+        )
+        .unwrap();
+        fs::write(temp.path().join("Cargo.toml"), "[package]\nname='legacy-note'\nversion='0.1.0'")
+            .unwrap();
+
+        let identity = project_identity(temp.path());
+
+        assert_eq!(
+            identity.manifests,
+            [temp.path().join("miden-project.toml"), temp.path().join("Cargo.toml")]
+        );
+    }
+
+    #[test]
+    fn tracked_inputs_skip_a_manifest_that_is_absent() {
+        let temp = tempfile::tempdir().unwrap();
+        fs::write(temp.path().join("Cargo.toml"), "[package]\nname='legacy-note'\nversion='0.1.0'")
+            .unwrap();
+
+        let identity = project_identity(temp.path());
+
+        assert_eq!(identity.manifests, [temp.path().join("Cargo.toml")]);
+    }
+
+    #[test]
+    fn manifest_ancestor_target_directories_are_candidates() {
+        let temp = tempfile::tempdir().unwrap();
+        fs::write(temp.path().join("Cargo.lock"), "").unwrap();
+        let project = temp.path().join("crates/note");
+        fs::create_dir_all(&project).unwrap();
+        let profiles = vec!["release".to_owned()];
+
+        let dirs = project_output_dirs(&project, &profiles);
+
+        assert!(dirs.contains(&temp.path().join("target/miden/release")));
+    }
+
+    #[test]
+    fn missing_package_diagnostic_names_macro_and_build_command() {
+        let temp = tempfile::tempdir().unwrap();
+        fs::write(temp.path().join("Cargo.toml"), "[package]\nname='note'\nversion='0.1.0'")
+            .unwrap();
+        let stems = project_identity(temp.path()).stems;
+        let message = missing_project_package_message("test-note-macro", temp.path(), None, &stems);
+        assert!(message.contains("test-note-macro"));
+        assert!(message.contains("cargo miden build --manifest-path"));
+        assert!(message.contains("--release"));
+    }
+
+    #[test]
+    fn missing_cached_package_diagnostic_names_cache_and_expected_files() {
+        let temp = tempfile::tempdir().unwrap();
+        fs::write(temp.path().join("Cargo.toml"), "[package]\nname='test-note'\nversion='0.1.0'")
+            .unwrap();
+        let cache_dir = temp.path().join("package-cache");
+        let stems = project_identity(temp.path()).stems;
+
+        let message = missing_project_package_message(
+            "test-note-macro",
+            temp.path(),
+            Some(&cache_dir),
+            &stems,
+        );
+
+        assert!(message.contains(&cache_dir.display().to_string()));
+        assert!(message.contains("'test-note.masp'"));
+        assert!(message.contains("MIDENC_PACKAGE_CACHE"));
+        assert!(!message.contains("target/miden/<profile>"));
+    }
+
+    #[test]
+    fn cache_lookup_uses_the_shared_package_file_name() {
+        let temp = tempfile::tempdir().unwrap();
+        let package = temp.path().join("note.with.dot.masp");
+        fs::write(&package, b"package").unwrap();
+
+        let found = find_project_package_in_cache(temp.path(), &["note.with.dot".to_owned()]);
+
+        assert_eq!(found, Some(package));
+    }
+}
diff --git a/sdk/note-schema/src/builder.rs b/sdk/note-schema/src/builder.rs
new file mode 100644
index 0000000000..59a54438f3
--- /dev/null
+++ b/sdk/note-schema/src/builder.rs
@@ -0,0 +1,333 @@
+//! String-path note storage builder.
+
+use std::collections::BTreeMap;
+
+use miden_field_repr::FeltWriter;
+
+use crate::{
+    CodecRegistry, Error, Felt, NoteStorage, NoteStorageSchema, PrimitiveType, Result, SchemaField,
+    SchemaType, SchemaTypeKind,
+    codec::{parse_felt, parse_unsigned, write_repr},
+    schema::normalize_name,
+    value::validate_encoding,
+};
+
+/// Builds note storage from normalized dotted string paths.
+pub struct NoteStorageBuilder<'a> {
+    schema: &'a NoteStorageSchema,
+    registry: &'a CodecRegistry,
+    values: BTreeMap<String, String>,
+}
+
+impl<'a> NoteStorageBuilder<'a> {
+    /// Creates an empty builder for a schema and codec registry.
+    pub(crate) fn new(schema: &'a NoteStorageSchema, registry: &'a CodecRegistry) -> Self {
+        Self {
+            schema,
+            registry,
+            values: BTreeMap::new(),
+        }
+    }
+
+    /// Sets a leaf value by kebab-case or snake_case dotted path.
+    ///
+    /// Options accept `none` or `some(<value>)`. Variants accept a case name or
+    /// `case-name(<value>)` when the selected case has a payload.
+    pub fn set(mut self, path: &str, value: impl AsRef<str>) -> Result<Self> {
+        let segments = normalize_path(path)?;
+        let normalized = segments.join(".");
+        let ty = resolve_path(self.schema.root(), &segments)?;
+        let value = value.as_ref();
+        reject_unsupported_constructor_path(ty, &normalized, value, self.registry)?;
+
+        if let Some(conflict) = self.values.keys().find(|existing| {
+            *existing == &normalized
+                || existing.starts_with(&format!("{normalized}."))
+                || normalized.starts_with(&format!("{existing}."))
+        }) {
+            return Err(Error::new(format!(
+                "path `{normalized}` conflicts with the existing value at `{conflict}`"
+            )));
+        }
+        self.values.insert(normalized, value.to_owned());
+        Ok(self)
+    }
+
+    /// Checks completeness and returns note storage in declaration order.
+    pub fn build(self) -> Result<NoteStorage> {
+        let mut felts = Vec::new();
+        encode_type(
+            self.schema.root(),
+            "",
+            &self.values,
+            self.registry,
+            &mut FeltWriter::new(&mut felts),
+        )?;
+        validate_encoding(self.schema.root(), &felts)
+            .map_err(|err| err.context("built note storage does not match its schema"))?;
+        NoteStorage::new(felts)
+            .map_err(|err| Error::new(format!("failed to create note storage: {err}")))
+    }
+}
+
+/// Rejects structural constructor shapes that need nested record text parsing.
+fn reject_unsupported_constructor_path(
+    ty: &SchemaType,
+    path: &str,
+    value: &str,
+    registry: &CodecRegistry,
+) -> Result<()> {
+    if ty.fqn().is_some_and(|fqn| registry.contains(fqn)) {
+        return Ok(());
+    }
+    match ty.kind() {
+        SchemaTypeKind::Option(payload)
+            if matches!(payload.kind(), SchemaTypeKind::Record(_))
+                && value.trim() != "none"
+                && !payload.fqn().is_some_and(|fqn| registry.contains(fqn)) =>
+        {
+            Err(Error::new(format!(
+                "path `{path}` selects an option with record payload `{}`; the string builder \
+                 does not support nested record constructors without a codec for that payload",
+                payload.fqn().or(payload.name()).unwrap_or("<anonymous record>")
+            )))
+        }
+        SchemaTypeKind::Variant(cases) => {
+            let (case_name, _) = parse_constructor(value)?;
+            let case_name = normalize_name(case_name);
+            let unsupported = cases.iter().find(|case| case.name() == case_name).and_then(|case| {
+                let payload = case.payload()?;
+                (matches!(payload.kind(), SchemaTypeKind::Record(_))
+                    && !payload.fqn().is_some_and(|fqn| registry.contains(fqn)))
+                .then_some(case.name())
+            });
+            if let Some(case_name) = unsupported {
+                Err(Error::new(format!(
+                    "path `{path}` selects variant case `{case_name}` with a record payload; the \
+                     string builder does not support nested record constructors without a codec \
+                     for that payload"
+                )))
+            } else {
+                Ok(())
+            }
+        }
+        _ => Ok(()),
+    }
+}
+
+/// Normalizes and validates a dotted field path.
+fn normalize_path(path: &str) -> Result<Vec<String>> {
+    // `split` always yields one segment, so only an empty segment can fail here.
+    let segments = path.split('.').map(normalize_name).collect::<Vec<_>>();
+    if segments.iter().any(String::is_empty) {
+        return Err(Error::new(format!("invalid empty note storage path `{path}`")));
+    }
+    Ok(segments)
+}
+
+/// Resolves a dotted path through structural record fields.
+fn resolve_path<'a>(mut ty: &'a SchemaType, segments: &[String]) -> Result<&'a SchemaType> {
+    let mut resolved = Vec::with_capacity(segments.len());
+    for segment in segments {
+        let SchemaTypeKind::Record(fields) = ty.kind() else {
+            return Err(Error::new(format!(
+                "path `{}` continues through non-record type `{}`",
+                resolved.join("."),
+                ty.fqn().or(ty.name()).unwrap_or("<anonymous>")
+            )));
+        };
+        let field = fields.iter().find(|field| field.name() == segment).ok_or_else(|| {
+            let prefix = if resolved.is_empty() {
+                "<root>".to_owned()
+            } else {
+                resolved.join(".")
+            };
+            Error::new(format!("record `{prefix}` has no field named `{segment}`"))
+        })?;
+        resolved.push(segment.clone());
+        ty = field.ty();
+    }
+    Ok(ty)
+}
+
+/// Encodes a schema type from complete path assignments.
+fn encode_type(
+    ty: &SchemaType,
+    path: &str,
+    values: &BTreeMap<String, String>,
+    registry: &CodecRegistry,
+    writer: &mut FeltWriter<'_>,
+) -> Result<()> {
+    if let Some(value) = values.get(path) {
+        let felts = encode_text_value(ty, value, registry)
+            .map_err(|err| err.context(format!("value at `{path}`")))?;
+        for felt in felts {
+            writer.write(felt);
+        }
+        return Ok(());
+    }
+
+    if let SchemaTypeKind::Record(fields) = ty.kind() {
+        let Some((fqn, codec)) = ty.fqn().and_then(|fqn| Some((fqn, registry.codec(fqn)?))) else {
+            return encode_record_fields(fields, path, values, registry, writer);
+        };
+        // A record assembled from child-path values must still satisfy its registered
+        // codec, or the builder would produce storage that the same registry rejects on
+        // decode. Encode the subtree separately so the codec can validate it as one value.
+        let mut subtree = Vec::new();
+        encode_record_fields(fields, path, values, registry, &mut FeltWriter::new(&mut subtree))?;
+        codec.validate(&subtree).map_err(|err| {
+            err.context(format!(
+                "codec `{fqn}` validation failed for the values assigned under `{}`",
+                if path.is_empty() { "<root>" } else { path }
+            ))
+        })?;
+        for felt in subtree {
+            writer.write(felt);
+        }
+        return Ok(());
+    }
+
+    Err(Error::new(format!(
+        "missing note storage value for `{}`",
+        if path.is_empty() { "<root>" } else { path }
+    )))
+}
+
+/// Encodes every field of a record from complete path assignments.
+fn encode_record_fields(
+    fields: &[SchemaField],
+    path: &str,
+    values: &BTreeMap<String, String>,
+    registry: &CodecRegistry,
+    writer: &mut FeltWriter<'_>,
+) -> Result<()> {
+    for field in fields {
+        let field_path = if path.is_empty() {
+            field.name().to_owned()
+        } else {
+            format!("{path}.{}", field.name())
+        };
+        encode_type(field.ty(), &field_path, values, registry, writer)?;
+    }
+    Ok(())
+}
+
+/// Encodes one direct string value.
+fn encode_text_value(ty: &SchemaType, value: &str, registry: &CodecRegistry) -> Result<Vec<Felt>> {
+    if let Some(fqn) = ty.fqn()
+        && let Some(codec) = registry.codec(fqn)
+    {
+        let felts = codec.parse(value)?;
+        codec
+            .validate(&felts)
+            .map_err(|err| err.context(format!("codec `{fqn}` validation failed")))?;
+        validate_encoding(ty, &felts)
+            .map_err(|err| err.context(format!("codec `{fqn}` changed the structural layout")))?;
+        return Ok(felts);
+    }
+
+    match ty.kind() {
+        SchemaTypeKind::Felt => Ok(write_repr(&parse_felt(value)?)),
+        SchemaTypeKind::Primitive(primitive) => encode_primitive(*primitive, value),
+        SchemaTypeKind::Option(payload) => encode_option(payload, value, registry),
+        SchemaTypeKind::Variant(cases) => {
+            let (case_name, payload_text) = parse_constructor(value)?;
+            let case_name = normalize_name(case_name);
+            let (ordinal, case) =
+                cases.iter().enumerate().find(|(_, case)| case.name() == case_name).ok_or_else(
+                    || {
+                        Error::new(format!(
+                            "variant `{}` has no case named `{case_name}`",
+                            ty.fqn().or(ty.name()).unwrap_or("<anonymous>")
+                        ))
+                    },
+                )?;
+            let ordinal = u32::try_from(ordinal)
+                .map_err(|_| Error::new("variant has more than u32::MAX cases"))?;
+            let mut felts = write_repr(&ordinal);
+            match (case.payload(), payload_text) {
+                (None, None) => {}
+                (None, Some(_)) => {
+                    return Err(Error::new(format!(
+                        "variant case `{case_name}` does not accept a payload"
+                    )));
+                }
+                (Some(_), None) => {
+                    return Err(Error::new(format!("variant case `{case_name}` needs a payload")));
+                }
+                (Some(payload), Some(payload_text)) => {
+                    felts.extend(encode_text_value(payload, payload_text, registry)?);
+                }
+            }
+            Ok(felts)
+        }
+        SchemaTypeKind::Record(_) => Err(Error::new(format!(
+            "type `{}` has no codec; set its leaf fields with dotted paths",
+            ty.fqn().or(ty.name()).unwrap_or("<anonymous record>")
+        ))),
+    }
+}
+
+/// Encodes an option tag and optional direct payload.
+fn encode_option(payload: &SchemaType, value: &str, registry: &CodecRegistry) -> Result<Vec<Felt>> {
+    let value = value.trim();
+    if value == "none" {
+        return Ok(write_repr(&0u32));
+    }
+    let (constructor, payload_text) = parse_constructor(value)?;
+    if normalize_name(constructor) != "some" {
+        return Err(Error::new("an option value must be `none` or `some(<value>)`"));
+    }
+    let payload_text =
+        payload_text.ok_or_else(|| Error::new("an option `some` value needs a payload"))?;
+    let mut felts = write_repr(&1u32);
+    felts.extend(encode_text_value(payload, payload_text, registry)?);
+    Ok(felts)
+}
+
+/// Encodes one supported primitive through `miden-field-repr`.
+fn encode_primitive(primitive: PrimitiveType, value: &str) -> Result<Vec<Felt>> {
+    match primitive {
+        PrimitiveType::U64 => Ok(write_repr(&parse_unsigned(value, "u64")?)),
+        PrimitiveType::U32 => {
+            let value = u32::try_from(parse_unsigned(value, "u32")?)
+                .map_err(|_| Error::new(format!("u32 value `{value}` is out of range")))?;
+            Ok(write_repr(&value))
+        }
+        PrimitiveType::U8 => {
+            let value = u8::try_from(parse_unsigned(value, "u8")?)
+                .map_err(|_| Error::new(format!("u8 value `{value}` is out of range")))?;
+            Ok(write_repr(&value))
+        }
+        PrimitiveType::Bool => {
+            let value = match value.trim() {
+                "true" | "1" => true,
+                "false" | "0" => false,
+                value => {
+                    return Err(Error::new(format!(
+                        "invalid bool `{value}`; expected true, false, 1, or 0"
+                    )));
+                }
+            };
+            Ok(write_repr(&value))
+        }
+    }
+}
+
+/// Splits `name` or `name(payload)` text without interpreting the payload.
+fn parse_constructor(value: &str) -> Result<(&str, Option<&str>)> {
+    let value = value.trim();
+    let Some(open) = value.find('(') else {
+        return Ok((value, None));
+    };
+    if !value.ends_with(')') {
+        return Err(Error::new(format!("value `{value}` has an unclosed payload")));
+    }
+    let name = value[..open].trim();
+    let payload = value[open + 1..value.len() - 1].trim();
+    if name.is_empty() || payload.is_empty() {
+        return Err(Error::new(format!("value `{value}` has an empty constructor or payload")));
+    }
+    Ok((name, Some(payload)))
+}
diff --git a/sdk/note-schema/src/codec.rs b/sdk/note-schema/src/codec.rs
new file mode 100644
index 0000000000..28c244f3ff
--- /dev/null
+++ b/sdk/note-schema/src/codec.rs
@@ -0,0 +1,355 @@
+//! String codecs for named WIT leaf types.
+
+use std::{collections::BTreeMap, sync::Arc};
+
+use miden_field::{Felt, Word};
+use miden_field_repr::{FeltReader, FeltWriter, FromFeltRepr, ToFeltRepr};
+use miden_protocol::{account::AccountId, address::NetworkId, asset::AssetAmount};
+
+use crate::{Error, Result};
+
+/// The canonical WIT FQN for `felt`.
+pub const FELT_FQN: &str = "miden:base/core-types@1.0.0.felt";
+/// The canonical WIT FQN for `word`.
+pub const WORD_FQN: &str = "miden:base/core-types@1.0.0.word";
+/// The canonical WIT FQN for `account-id`.
+pub const ACCOUNT_ID_FQN: &str = "miden:base/core-types@1.0.0.account-id";
+/// The canonical WIT FQN for `asset-amount`.
+pub const ASSET_AMOUNT_FQN: &str = "miden:base/core-types@1.0.0.asset-amount";
+
+/// A protocol type whose schema leaf maps directly to an existing host type and standard codec.
+///
+/// This is the canonical standard-leaf definition used by schema traversal, Rust code generation,
+/// and author-codec registration. Named types outside this set remain schema-owned, including
+/// other records in the `miden:base/core-types` interface.
+#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
+pub enum StandardLeaf {
+    /// The one-element Miden base-field type.
+    Felt,
+    /// A group of four Miden base-field elements.
+    Word,
+    /// A two-element protocol account identifier.
+    AccountId,
+    /// A validated fungible-asset amount.
+    AssetAmount,
+}
+
+impl StandardLeaf {
+    /// Every standard leaf in canonical registry order.
+    pub const ALL: [Self; 4] = [Self::Felt, Self::Word, Self::AccountId, Self::AssetAmount];
+
+    /// Returns the canonical WIT FQN for this standard leaf.
+    pub const fn fqn(self) -> &'static str {
+        match self {
+            Self::Felt => FELT_FQN,
+            Self::Word => WORD_FQN,
+            Self::AccountId => ACCOUNT_ID_FQN,
+            Self::AssetAmount => ASSET_AMOUNT_FQN,
+        }
+    }
+
+    /// Classifies a canonical WIT FQN as a standard leaf.
+    pub fn from_fqn(fqn: &str) -> Option<Self> {
+        Self::ALL.into_iter().find(|leaf| leaf.fqn() == fqn)
+    }
+}
+
+/// Parses, displays, and validates one fully-qualified WIT leaf type.
+pub trait ConsumerTypeCodec: Send + Sync {
+    /// Parses a string into its structural felt representation.
+    fn parse(&self, value: &str) -> Result<Vec<Felt>>;
+
+    /// Displays a structurally valid felt representation.
+    fn display(&self, felts: &[Felt]) -> Result<String>;
+
+    /// Validates the felt representation and any semantic type constraints.
+    fn validate(&self, felts: &[Felt]) -> Result<()>;
+}
+
+/// A registry of codecs keyed by canonical WIT fully-qualified type name.
+///
+/// The canonical form is `<namespace>:<package>/<interface>@<version>.<type>`. The version follows
+/// the interface, matching WIT interface identifiers. When a package has no version, the
+/// `@<version>` part is omitted, for example `miden:base/core-types.account-id`.
+/// The standard account ID codec displays the canonical mainnet bech32 form because the network
+/// identifier is not part of an account ID's felt representation.
+#[derive(Clone)]
+pub struct CodecRegistry {
+    codecs: BTreeMap<String, Arc<dyn ConsumerTypeCodec>>,
+}
+
+impl CodecRegistry {
+    /// Creates an empty codec registry.
+    pub fn empty() -> Self {
+        Self {
+            codecs: BTreeMap::new(),
+        }
+    }
+
+    /// Creates a registry containing all standard note storage codecs.
+    pub fn with_standard_codecs() -> Self {
+        let mut registry = Self::empty();
+        for leaf in StandardLeaf::ALL {
+            match leaf {
+                StandardLeaf::Felt => registry.register(leaf.fqn(), FeltCodec),
+                StandardLeaf::Word => registry.register(leaf.fqn(), WordCodec),
+                StandardLeaf::AccountId => registry.register(leaf.fqn(), AccountIdCodec),
+                StandardLeaf::AssetAmount => registry.register(leaf.fqn(), AssetAmountCodec),
+            }
+        }
+        registry
+    }
+
+    /// Registers or replaces a codec under its canonical WIT FQN.
+    pub fn register(&mut self, fqn: impl Into<String>, codec: impl ConsumerTypeCodec + 'static) {
+        self.register_shared(fqn, Arc::new(codec));
+    }
+
+    /// Registers or replaces a shared codec under its canonical WIT FQN.
+    pub fn register_shared(&mut self, fqn: impl Into<String>, codec: Arc<dyn ConsumerTypeCodec>) {
+        self.codecs.insert(fqn.into(), codec);
+    }
+
+    /// Returns the codec registered for a canonical WIT FQN.
+    pub fn codec(&self, fqn: &str) -> Option<&dyn ConsumerTypeCodec> {
+        self.codecs.get(fqn).map(Arc::as_ref)
+    }
+
+    /// Returns true when the canonical WIT FQN has a codec.
+    pub fn contains(&self, fqn: &str) -> bool {
+        self.codecs.contains_key(fqn)
+    }
+}
+
+impl Default for CodecRegistry {
+    fn default() -> Self {
+        Self::with_standard_codecs()
+    }
+}
+
+/// Parses and displays one field element.
+struct FeltCodec;
+
+impl ConsumerTypeCodec for FeltCodec {
+    fn parse(&self, value: &str) -> Result<Vec<Felt>> {
+        let felt = parse_felt(value)?;
+        Ok(write_repr(&felt))
+    }
+
+    fn display(&self, felts: &[Felt]) -> Result<String> {
+        read_repr::<Felt>(felts).map(|felt| felt.as_canonical_u64().to_string())
+    }
+
+    fn validate(&self, felts: &[Felt]) -> Result<()> {
+        read_repr::<Felt>(felts).map(|_| ())
+    }
+}
+
+/// Parses and displays a four-felt word.
+struct WordCodec;
+
+impl ConsumerTypeCodec for WordCodec {
+    fn parse(&self, value: &str) -> Result<Vec<Felt>> {
+        let value = value.trim();
+        let word = if value.starts_with("0x") || value.starts_with("0X") {
+            Word::parse(value).map_err(|err| Error::new(format!("invalid word hex: {err}")))?
+        } else {
+            let values = value.trim_matches(['[', ']']);
+            let felts = values.split(',').map(parse_felt).collect::<Result<Vec<_>>>()?;
+            let elements: [Felt; 4] = felts.try_into().map_err(|felts: Vec<Felt>| {
+                Error::new(format!(
+                    "a word needs four comma-separated felts, found {}",
+                    felts.len()
+                ))
+            })?;
+            Word::new(elements)
+        };
+        Ok(write_repr(&word))
+    }
+
+    fn display(&self, felts: &[Felt]) -> Result<String> {
+        read_repr::<Word>(felts).map(|word| word.to_hex())
+    }
+
+    fn validate(&self, felts: &[Felt]) -> Result<()> {
+        read_repr::<Word>(felts).map(|_| ())
+    }
+}
+
+/// Parses and displays a protocol account ID.
+struct AccountIdCodec;
+
+impl ConsumerTypeCodec for AccountIdCodec {
+    fn parse(&self, value: &str) -> Result<Vec<Felt>> {
+        let (account_id, _) = AccountId::parse(value)
+            .map_err(|err| Error::new(format!("invalid account-id: {err}")))?;
+        let mut felts = Vec::with_capacity(2);
+        let mut writer = FeltWriter::new(&mut felts);
+        writer.write(account_id.prefix().as_felt());
+        writer.write(account_id.suffix());
+        Ok(felts)
+    }
+
+    fn display(&self, felts: &[Felt]) -> Result<String> {
+        read_account_id(felts).map(|account_id| account_id.to_bech32(NetworkId::Mainnet))
+    }
+
+    fn validate(&self, felts: &[Felt]) -> Result<()> {
+        read_account_id(felts).map(|_| ())
+    }
+}
+
+/// Parses and displays a validated asset amount.
+struct AssetAmountCodec;
+
+impl ConsumerTypeCodec for AssetAmountCodec {
+    fn parse(&self, value: &str) -> Result<Vec<Felt>> {
+        let amount = value
+            .trim()
+            .parse::<u64>()
+            .map_err(|err| Error::new(format!("invalid asset amount: {err}")))?;
+        let amount = AssetAmount::new(amount)
+            .map_err(|err| Error::new(format!("invalid asset amount: {err}")))?;
+        let felt = Felt::from(amount);
+        Ok(write_repr(&felt))
+    }
+
+    fn display(&self, felts: &[Felt]) -> Result<String> {
+        read_asset_amount(felts).map(|amount| amount.to_string())
+    }
+
+    fn validate(&self, felts: &[Felt]) -> Result<()> {
+        read_asset_amount(felts).map(|_| ())
+    }
+}
+
+/// Parses a canonical felt from decimal or hexadecimal text.
+pub(crate) fn parse_felt(value: &str) -> Result<Felt> {
+    let value = parse_unsigned(value, "felt")?;
+    Felt::new(value).map_err(|err| Error::new(format!("invalid felt: {err}")))
+}
+
+/// Parses a decimal or hexadecimal unsigned integer.
+pub(crate) fn parse_unsigned(value: &str, ty: &str) -> Result<u64> {
+    let value = value.trim();
+    let parsed = match value.strip_prefix("0x").or_else(|| value.strip_prefix("0X")) {
+        Some(digits) => u64::from_str_radix(digits, 16),
+        None => value.parse::<u64>(),
+    };
+    parsed.map_err(|err| Error::new(format!("invalid {ty}: {err}")))
+}
+
+/// Encodes a felt-repr value through the shared writer.
+pub(crate) fn write_repr(value: &impl ToFeltRepr) -> Vec<Felt> {
+    let mut felts = Vec::new();
+    value.write_felt_repr(&mut FeltWriter::new(&mut felts));
+    felts
+}
+
+/// Decodes one felt-repr value and rejects trailing elements.
+fn read_repr<T: FromFeltRepr>(felts: &[Felt]) -> Result<T> {
+    let mut reader = FeltReader::new(felts);
+    let value = T::from_felt_repr(&mut reader)
+        .map_err(|err| Error::new(format!("invalid felt representation: {err}")))?;
+    reader
+        .ensure_eof()
+        .map_err(|err| Error::new(format!("invalid felt representation: {err}")))?;
+    Ok(value)
+}
+
+/// Decodes and validates an account ID in WIT record field order.
+fn read_account_id(felts: &[Felt]) -> Result<AccountId> {
+    let mut reader = FeltReader::new(felts);
+    let prefix = reader
+        .read()
+        .map_err(|err| Error::new(format!("invalid account-id representation: {err}")))?;
+    let suffix = reader
+        .read()
+        .map_err(|err| Error::new(format!("invalid account-id representation: {err}")))?;
+    reader
+        .ensure_eof()
+        .map_err(|err| Error::new(format!("invalid account-id representation: {err}")))?;
+    // WIT declares prefix before suffix, but the constructor takes suffix first.
+    AccountId::try_from_elements(suffix, prefix)
+        .map_err(|err| Error::new(format!("invalid account-id representation: {err}")))
+}
+
+/// Decodes and validates an asset amount.
+fn read_asset_amount(felts: &[Felt]) -> Result<AssetAmount> {
+    let felt = read_repr::<Felt>(felts)?;
+    AssetAmount::try_from(felt)
+        .map_err(|err| Error::new(format!("invalid asset amount representation: {err}")))
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    /// Returns a valid account ID and its mainnet bech32 form.
+    fn account_id() -> (AccountId, String) {
+        let account_id =
+            AccountId::try_from(0xaa00_0000_0000_bc11_0000_bc00_0000_de00u128).unwrap();
+        let bech32 = account_id.to_bech32(NetworkId::Mainnet);
+        (account_id, bech32)
+    }
+
+    #[test]
+    fn standard_registry_contains_canonical_versioned_fqns() {
+        let registry = CodecRegistry::default();
+
+        for leaf in StandardLeaf::ALL {
+            assert!(registry.contains(leaf.fqn()));
+        }
+        assert!(!CodecRegistry::empty().contains(FELT_FQN));
+    }
+
+    #[test]
+    fn standard_leaf_definition_is_pinned() {
+        assert_eq!(
+            StandardLeaf::ALL.map(StandardLeaf::fqn),
+            [FELT_FQN, WORD_FQN, ACCOUNT_ID_FQN, ASSET_AMOUNT_FQN]
+        );
+        for leaf in StandardLeaf::ALL {
+            assert_eq!(StandardLeaf::from_fqn(leaf.fqn()), Some(leaf));
+            assert!(CodecRegistry::default().contains(leaf.fqn()));
+        }
+        assert_eq!(StandardLeaf::from_fqn("miden:base/core-types@1.0.0.digest"), None);
+    }
+
+    #[test]
+    fn felt_codec_accepts_decimal_and_hex() {
+        let codec = FeltCodec;
+
+        assert_eq!(codec.parse("42").unwrap(), codec.parse("0x2a").unwrap());
+        assert_eq!(codec.display(&codec.parse("42").unwrap()).unwrap(), "42");
+    }
+
+    #[test]
+    fn word_codec_accepts_hex_and_four_felts() {
+        let codec = WordCodec;
+        let from_felts = codec.parse("[1, 2, 3, 4]").unwrap();
+        let from_hex = codec.parse(&codec.display(&from_felts).unwrap()).unwrap();
+
+        assert_eq!(from_hex, from_felts);
+    }
+
+    #[test]
+    fn account_id_codec_uses_prefix_suffix_field_order() {
+        let codec = AccountIdCodec;
+        let (account_id, bech32) = account_id();
+        let felts = codec.parse(&bech32).unwrap();
+        let hex_felts = codec.parse(&account_id.to_hex()).unwrap();
+
+        assert_eq!(felts, [account_id.prefix().as_felt(), account_id.suffix()]);
+        assert_eq!(hex_felts, felts);
+        assert_eq!(codec.display(&felts).unwrap(), bech32);
+    }
+
+    #[test]
+    fn asset_amount_codec_enforces_protocol_limit() {
+        let codec = AssetAmountCodec;
+
+        assert!(codec.parse(&AssetAmount::MAX.as_u64().to_string()).is_ok());
+        assert!(codec.parse(&(AssetAmount::MAX.as_u64() + 1).to_string()).is_err());
+    }
+}
diff --git a/sdk/note-schema/src/codec_component.rs b/sdk/note-schema/src/codec_component.rs
new file mode 100644
index 0000000000..1057dd00af
--- /dev/null
+++ b/sdk/note-schema/src/codec_component.rs
@@ -0,0 +1,1308 @@
+//! Consumer adapters for author codec components.
+
+use std::{collections::HashSet, sync::Arc};
+
+use miden_field::Felt;
+use miden_mast_package::Package;
+use midenc_frontend_wasm_metadata::{PACKAGE_NOTE_CODEC_SECTION_ID, package_note_codec_section_id};
+use wasmtime::{
+    Config, Engine, ResourceLimiter, Store, StoreLimits, StoreLimitsBuilder, Trap,
+    component::{Component, Instance, Linker, WasmList, WasmStr},
+};
+
+use crate::{
+    CodecFailure, CodecRegistry, ConsumerTypeCodec, Error, NoteStorageSchema, Result,
+    codec_structure::{MAX_CORE_INSTANCES, MAX_INSTANTIATED_MEMORIES, MAX_INSTANTIATED_TABLES},
+    validate_note_codec_component,
+};
+
+/// Maximum bytes of Wasm stack available to one component call.
+const MAX_WASM_STACK_BYTES: usize = 512 * 1024;
+
+/// The versioned interface a note codec component exports.
+const CODEC_INTERFACE: &str = "miden:note-codec/codec@1.0.0";
+
+/// The discovery function of the codec interface.
+const SUPPORTED_TYPES: &str = "supported-types";
+
+/// Maximum instances one codec call store may hold.
+///
+/// The value is the structural budget for the core instances one instantiation creates. The load
+/// policy counts what instantiation creates, so a component that loads instantiates within this
+/// count.
+const MAX_STORE_INSTANCES: usize = MAX_CORE_INSTANCES;
+
+/// Maximum tables one codec call store may hold.
+///
+/// The value is the structural budget for the tables one instantiation creates.
+const MAX_STORE_TABLES: usize = MAX_INSTANTIATED_TABLES;
+
+/// Maximum linear memories one codec call store may hold.
+///
+/// The value is the structural budget for the linear memories one instantiation creates.
+const MAX_STORE_MEMORIES: usize = MAX_INSTANTIATED_MEMORIES;
+
+wasmtime::component::bindgen!({
+    path: "wit",
+    world: "note-codec",
+});
+
+/// Runtime limits a host applies to bundled note codecs. Limits are host policy.
+/// A package carries no limit values and cannot raise them. Hosts in one
+/// deployment should run identical limits, so a codec behaves the same everywhere.
+///
+/// The store counts are fixed policy instead of host configuration. One call store admits at
+/// most `MAX_STORE_INSTANCES` instances, `MAX_STORE_TABLES` tables, and `MAX_STORE_MEMORIES`
+/// linear memory, and one call gets `MAX_WASM_STACK_BYTES` of Wasm stack. The structural policy
+/// in [`validate_note_codec_component`] counts what one instantiation creates and applies the
+/// same values, so a component that loads instantiates within these counts.
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub struct CodecLimits {
+    /// Fuel budget for one codec call, about one unit per Wasm instruction.
+    pub fuel: u64,
+    /// Cap on one guest linear memory in bytes. Wasmtime applies the cap to each memory, and a
+    /// store admits `MAX_STORE_MEMORIES` of them.
+    pub max_memory_bytes: usize,
+    /// Cap on the elements of one table. Wasmtime applies the cap to each table, and a store
+    /// admits `MAX_STORE_TABLES` of them.
+    pub max_table_elements: usize,
+    /// Cap on the component size in bytes.
+    pub max_component_bytes: usize,
+    /// Cap on the number of types one component may report.
+    pub max_supported_types: usize,
+    /// Cap on one reported type name in bytes.
+    pub max_fqn_bytes: usize,
+    /// Cap on the felts one `parse` call may return.
+    pub max_returned_felts: usize,
+    /// Cap on one returned string in bytes.
+    pub max_returned_string_bytes: usize,
+}
+
+impl Default for CodecLimits {
+    fn default() -> Self {
+        Self {
+            fuel: 10_000_000,
+            max_memory_bytes: 16 * 1024 * 1024,
+            max_table_elements: 4_096,
+            max_component_bytes: crate::schema::MAX_NOTE_CODEC_COMPONENT_BYTES,
+            max_supported_types: 128,
+            max_fqn_bytes: 512,
+            max_returned_felts: 4_096,
+            max_returned_string_bytes: 16 * 1024,
+        }
+    }
+}
+
+impl CodecRegistry {
+    /// Loads the note codec component from a package under the default limits.
+    pub fn load_from_package(package: &Package) -> Result<Self> {
+        Self::load_from_package_with_limits(package, CodecLimits::default())
+    }
+
+    /// Loads the note codec component from a package and registers all reported types.
+    ///
+    /// A package without a note codec section is the common case, so it is not an error: the
+    /// registry comes back with the standard codecs alone, the same base the bundled-codec path
+    /// registers on top of. More than one note codec section is still an error.
+    pub fn load_from_package_with_limits(package: &Package, limits: CodecLimits) -> Result<Self> {
+        // The section check comes first. A package without a codec section needs no schema, and
+        // a unit `#[note]` struct emits neither section.
+        let section_id = package_note_codec_section_id();
+        if !package.sections.iter().any(|section| section.id == section_id) {
+            return Ok(Self::default());
+        }
+        let bytes = crate::section::unique_package_section(
+            package,
+            section_id,
+            PACKAGE_NOTE_CODEC_SECTION_ID,
+        )?;
+        let schema = NoteStorageSchema::from_package(package)?;
+        Self::load_from_component(bytes, &schema.custom_type_fqns(), limits)
+    }
+
+    /// Loads a note codec component with every unresolved import stubbed as a trap.
+    fn load_from_component(
+        bytes: &[u8],
+        custom_type_fqns: &HashSet<String>,
+        limits: CodecLimits,
+    ) -> Result<Self> {
+        let runtime = Arc::new(ComponentRuntime::new(bytes, limits)?);
+        let supported_types = runtime.supported_types()?;
+        let mut registry = Self::default();
+        validate_reported_fqns(&supported_types, custom_type_fqns, &registry)?;
+
+        for fqn in supported_types {
+            registry.register_shared(
+                fqn.clone(),
+                Arc::new(ComponentCodec {
+                    fqn,
+                    runtime: Arc::clone(&runtime),
+                }),
+            );
+        }
+
+        Ok(registry)
+    }
+}
+
+/// A compiled component used to create an isolated instance for each operation.
+struct ComponentRuntime {
+    /// The engine that holds the accepted Wasm proposals and the fuel setting.
+    engine: Engine,
+    /// The compiled codec component.
+    component: Component,
+    /// The host limits applied to every instance and every call.
+    limits: CodecLimits,
+}
+
+/// Store state that owns the component resource limits.
+struct ComponentStore {
+    /// The inner limiter that decides every memory and table question.
+    limits: StoreLimits,
+    /// Set when a memory or table growth was refused, so a failed call reports its class.
+    limit_hit: bool,
+}
+
+// The inner limiter decides every question. This wrapper only records that a growth was
+// refused, which a call failure reports as `CodecFailure::LimitExceeded`.
+impl ResourceLimiter for ComponentStore {
+    fn memory_growing(
+        &mut self,
+        current: usize,
+        desired: usize,
+        maximum: Option<usize>,
+    ) -> wasmtime::Result<bool> {
+        let allowed = self.limits.memory_growing(current, desired, maximum);
+        if !matches!(allowed, Ok(true)) {
+            self.limit_hit = true;
+        }
+        allowed
+    }
+
+    fn memory_grow_failed(&mut self, error: wasmtime::Error) -> wasmtime::Result<()> {
+        self.limit_hit = true;
+        self.limits.memory_grow_failed(error)
+    }
+
+    fn table_growing(
+        &mut self,
+        current: usize,
+        desired: usize,
+        maximum: Option<usize>,
+    ) -> wasmtime::Result<bool> {
+        let allowed = self.limits.table_growing(current, desired, maximum);
+        if !matches!(allowed, Ok(true)) {
+            self.limit_hit = true;
+        }
+        allowed
+    }
+
+    fn table_grow_failed(&mut self, error: wasmtime::Error) -> wasmtime::Result<()> {
+        self.limit_hit = true;
+        self.limits.table_grow_failed(error)
+    }
+
+    fn instances(&self) -> usize {
+        self.limits.instances()
+    }
+
+    fn tables(&self) -> usize {
+        self.limits.tables()
+    }
+
+    fn memories(&self) -> usize {
+        self.limits.memories()
+    }
+}
+
+/// One isolated codec component call context.
+struct ComponentInstance {
+    /// The store that holds the fuel budget and the resource limits of this call.
+    store: Store<ComponentStore>,
+    /// The raw instance, used by the calls that lift their results lazily.
+    instance: Instance,
+    /// The generated typed bindings of the codec world.
+    bindings: NoteCodec,
+}
+
+impl ComponentRuntime {
+    /// Compiles a component under the explicit engine policy and the given limits.
+    fn new(bytes: &[u8], limits: CodecLimits) -> Result<Self> {
+        // One entry point applies the byte cap, the Wasm feature policy, and the structural
+        // limits. The producer applies the same policy when it attaches a codec.
+        validate_note_codec_component(bytes, limits.max_component_bytes)?;
+        let mut config = Config::new();
+        config.wasm_component_model(true);
+        config.consume_fuel(true);
+        // Proposals the wasm32-wasip2 target emits by default.
+        config.wasm_bulk_memory(true);
+        config.wasm_multi_value(true);
+        // Validation policy: `NOTE_CODEC_WASM_FEATURES` decides what loads, and the call above
+        // already applied it. The setters below repeat that policy in the engine wherever
+        // wasmtime exposes a setter. Threads, garbage collection, reference types and typed
+        // function references have no setter here, because wasmtime gates those setters behind
+        // Cargo features this crate does not enable. Another crate in the same build can turn
+        // those proposals back on by feature unification, which is why the accepted set is
+        // pinned in wasmparser instead of read back from the engine.
+        config.wasm_simd(false);
+        config.wasm_relaxed_simd(false);
+        config.wasm_multi_memory(false);
+        config.wasm_memory64(false);
+        config.wasm_tail_call(false);
+        config.wasm_extended_const(false);
+        config.wasm_custom_page_sizes(false);
+        config.wasm_wide_arithmetic(false);
+        config.wasm_shared_everything_threads(false);
+        config.wasm_stack_switching(false);
+        config.wasm_exceptions(false);
+        config.wasm_component_model_error_context(false);
+        // Floats stay on: codecs parse and format decimal text. NaN canonicalization keeps
+        // float results identical across hosts.
+        config.cranelift_nan_canonicalization(true);
+        config.max_wasm_stack(MAX_WASM_STACK_BYTES);
+        config.wasm_backtrace(false);
+        let engine = Engine::new(&config)
+            .map_err(|error| component_error("create the Wasmtime engine", error))?;
+        let component = Component::new(&engine, bytes)
+            .map_err(|error| component_error("compile the note codec component", error))?;
+        Ok(Self {
+            engine,
+            component,
+            limits,
+        })
+    }
+
+    /// Instantiates the component with trapping WASI stubs and fresh per-call limits.
+    fn instantiate(&self) -> Result<ComponentInstance> {
+        let mut linker = Linker::new(&self.engine);
+        // The wasip2 standard library imports WASI interfaces the codec never needs at
+        // runtime. Stub every import as a trap so nothing outside the component is callable.
+        linker
+            .define_unknown_imports_as_traps(&self.component)
+            .map_err(|error| component_error("stub the note codec imports", error))?;
+        let state = ComponentStore {
+            limits: component_store_limits(&self.limits),
+            limit_hit: false,
+        };
+        let mut store = Store::new(&self.engine, state);
+        store.limiter(|state| state as &mut dyn ResourceLimiter);
+        store
+            .set_fuel(self.limits.fuel)
+            .map_err(|error| component_error("set the note codec fuel budget", error))?;
+        // Instantiation runs the guest `_initialize` and every data-segment initializer under
+        // the same fuel and store limits as an exported call, so it fails in the same classes.
+        let instance = match linker.instantiate(&mut store, &self.component) {
+            Ok(instance) => instance,
+            Err(error) => return Err(start_failure(&store, error)),
+        };
+        let bindings = match NoteCodec::new(&mut store, &instance) {
+            Ok(bindings) => bindings,
+            Err(error) => return Err(start_failure(&store, error)),
+        };
+        Ok(ComponentInstance {
+            store,
+            instance,
+            bindings,
+        })
+    }
+
+    /// Queries the component's supported FQNs once during registry construction.
+    ///
+    /// The call lifts its result lazily instead of going through the generated bindings. A
+    /// `list<string>` is the one result a codec can inflate far past every limit: the elements
+    /// are pointer and length pairs that may all alias one small region, so lifting the whole
+    /// list into owned strings allocates before any cap applies. The per-value calls return one
+    /// string or one felt list, which guest memory already bounds, so they keep the bindings.
+    fn supported_types(&self) -> Result<Vec<String>> {
+        let ComponentInstance {
+            mut store,
+            instance,
+            ..
+        } = self.instantiate()?;
+        let interface =
+            instance.get_export_index(&mut store, None, CODEC_INTERFACE).ok_or_else(|| {
+                Error::codec(
+                    CodecFailure::Trapped,
+                    format!("note codec component exports no `{CODEC_INTERFACE}`"),
+                )
+            })?;
+        let export = instance
+            .get_export_index(&mut store, Some(&interface), SUPPORTED_TYPES)
+            .ok_or_else(|| {
+                Error::codec(
+                    CodecFailure::Trapped,
+                    format!(
+                        "note codec component exports no `{SUPPORTED_TYPES}` in \
+                         `{CODEC_INTERFACE}`"
+                    ),
+                )
+            })?;
+        let supported_types = instance
+            .get_typed_func::<(), (WasmList<WasmStr>,)>(&mut store, &export)
+            .map_err(|error| component_error("find `supported-types`", error))?;
+        let (reported,) = match supported_types.call(&mut store, ()) {
+            Ok(reported) => reported,
+            Err(error) => {
+                return Err(Error::codec(
+                    classify_failure(&store, &error),
+                    format!("note codec component failed in `supported-types`: {error:#}"),
+                ));
+            }
+        };
+
+        // Check the list length before any element is read, then take the cursors. A cursor
+        // holds a pointer and a length, so this copies nothing out of guest memory.
+        if reported.len() > self.limits.max_supported_types {
+            return Err(Error::codec(
+                CodecFailure::LimitExceeded,
+                format!(
+                    "note codec component reported {} types; the limit is {}",
+                    reported.len(),
+                    self.limits.max_supported_types
+                ),
+            ));
+        }
+        let cursors = reported
+            .iter(&mut store)
+            .collect::<wasmtime::Result<Vec<_>>>()
+            .map_err(|error| component_error("read the reported type FQNs", error))?;
+
+        let mut fqns = Vec::with_capacity(cursors.len());
+        for cursor in cursors {
+            // `to_str` borrows guest memory for UTF-8, so the cap applies before the copy.
+            let fqn = cursor
+                .to_str(&store)
+                .map_err(|error| component_error("decode a reported type FQN", error))?;
+            ensure_returned_string_limit("type FQN", &fqn, self.limits.max_fqn_bytes)?;
+            fqns.push(fqn.into_owned());
+        }
+        // The typed-func API requires the post-return call once the results are read.
+        supported_types
+            .post_return(&mut store)
+            .map_err(|error| component_error("finish `supported-types`", error))?;
+        Ok(fqns)
+    }
+}
+
+/// Builds the resource limits attached to every isolated component call store.
+fn component_store_limits(limits: &CodecLimits) -> StoreLimits {
+    StoreLimitsBuilder::new()
+        .memory_size(limits.max_memory_bytes)
+        .table_elements(limits.max_table_elements)
+        .instances(MAX_STORE_INSTANCES)
+        .tables(MAX_STORE_TABLES)
+        .memories(MAX_STORE_MEMORIES)
+        .trap_on_grow_failure(true)
+        .build()
+}
+
+/// A registry entry that dispatches one FQN through isolated component instances.
+struct ComponentCodec {
+    /// The fully qualified WIT name this entry answers for.
+    fqn: String,
+    /// The compiled component shared by every registry entry of one package.
+    runtime: Arc<ComponentRuntime>,
+}
+
+impl ComponentCodec {
+    /// Calls one component operation in a fresh fuel- and memory-limited store.
+    fn with_runtime<T>(
+        &self,
+        operation: &str,
+        call: impl FnOnce(&NoteCodec, &mut Store<ComponentStore>) -> wasmtime::Result<T>,
+    ) -> Result<T> {
+        let mut instance = self.runtime.instantiate()?;
+        match call(&instance.bindings, &mut instance.store) {
+            Ok(value) => Ok(value),
+            Err(error) => Err(self.call_failure(operation, &instance.store, error)),
+        }
+    }
+
+    /// Reports why one component call did not return a value.
+    fn call_failure(
+        &self,
+        operation: &str,
+        store: &Store<ComponentStore>,
+        error: wasmtime::Error,
+    ) -> Error {
+        let fqn = &self.fqn;
+        match classify_failure(store, &error) {
+            CodecFailure::LimitExceeded => Error::codec(
+                CodecFailure::LimitExceeded,
+                format!("note codec `{fqn}` exceeded a resource limit in `{operation}`"),
+            ),
+            CodecFailure::OutOfFuel => Error::codec(
+                CodecFailure::OutOfFuel,
+                format!("note codec `{fqn}` ran out of fuel in `{operation}`"),
+            ),
+            class => Error::codec(
+                class,
+                format!("note codec `{fqn}` trapped in `{operation}`: {error:#}"),
+            ),
+        }
+    }
+
+    /// Returns the limits the host applies to this codec.
+    fn limits(&self) -> &CodecLimits {
+        &self.runtime.limits
+    }
+}
+
+impl ConsumerTypeCodec for ComponentCodec {
+    fn parse(&self, value: &str) -> Result<Vec<Felt>> {
+        let result = self.with_runtime("parse", |bindings, store| {
+            bindings.miden_note_codec_codec().call_parse(store, &self.fqn, value)
+        })?;
+        let values = match result {
+            Ok(values) => values,
+            Err(message) => {
+                ensure_returned_string_limit(
+                    "codec error",
+                    &message,
+                    self.limits().max_returned_string_bytes,
+                )?;
+                return Err(codec_rejection("parse", &self.fqn, message));
+            }
+        };
+        ensure_returned_felt_limit(&self.fqn, values.len(), self.limits().max_returned_felts)?;
+        component_values_to_felts(&self.fqn, &values)
+    }
+
+    fn display(&self, felts: &[Felt]) -> Result<String> {
+        let values = felts.iter().map(|felt| felt.as_canonical_u64()).collect::<Vec<_>>();
+        let result = self.with_runtime("display", |bindings, store| {
+            bindings.miden_note_codec_codec().call_display(store, &self.fqn, &values)
+        })?;
+        let display = match result {
+            Ok(display) => display,
+            Err(message) => {
+                ensure_returned_string_limit(
+                    "codec error",
+                    &message,
+                    self.limits().max_returned_string_bytes,
+                )?;
+                return Err(codec_rejection("display", &self.fqn, message));
+            }
+        };
+        ensure_returned_string_limit(
+            "display value",
+            &display,
+            self.limits().max_returned_string_bytes,
+        )?;
+        Ok(display)
+    }
+
+    fn validate(&self, felts: &[Felt]) -> Result<()> {
+        let values = felts.iter().map(|felt| felt.as_canonical_u64()).collect::<Vec<_>>();
+        let result = self.with_runtime("validate", |bindings, store| {
+            bindings.miden_note_codec_codec().call_validate(store, &self.fqn, &values)
+        })?;
+        match result {
+            Ok(()) => Ok(()),
+            Err(message) => {
+                ensure_returned_string_limit(
+                    "codec error",
+                    &message,
+                    self.limits().max_returned_string_bytes,
+                )?;
+                Err(codec_rejection("validate", &self.fqn, message))
+            }
+        }
+    }
+}
+
+/// Validates the component's claimed type authority before registration.
+fn validate_reported_fqns(
+    reported: &[String],
+    custom_type_fqns: &HashSet<String>,
+    standard_registry: &CodecRegistry,
+) -> Result<()> {
+    let mut seen = HashSet::new();
+    for fqn in reported {
+        if fqn.trim().is_empty() {
+            return Err(Error::new("note codec component reported an empty type FQN"));
+        }
+        if !seen.insert(fqn) {
+            return Err(Error::new(format!(
+                "note codec component reported type FQN `{fqn}` more than once"
+            )));
+        }
+        if standard_registry.contains(fqn) {
+            return Err(Error::new(format!(
+                "note codec component cannot replace the standard codec for `{fqn}`"
+            )));
+        }
+        if !custom_type_fqns.contains(fqn) {
+            return Err(Error::new(format!(
+                "note codec component reported `{fqn}`, but that custom type does not appear in \
+                 the package note storage schema"
+            )));
+        }
+    }
+    Ok(())
+}
+
+/// Classifies why a component call, or the instantiation that precedes it, failed.
+///
+/// The store records a refused memory or table growth, and it outranks the trap the guest saw:
+/// the trap is only how the refusal surfaced.
+fn classify_failure(store: &Store<ComponentStore>, error: &wasmtime::Error) -> CodecFailure {
+    if store.data().limit_hit {
+        return CodecFailure::LimitExceeded;
+    }
+    match error.downcast_ref::<Trap>() {
+        Some(&Trap::OutOfFuel) => CodecFailure::OutOfFuel,
+        Some(_) => CodecFailure::Trapped,
+        // Wasmtime applies the store instance, table, and memory counts without asking the
+        // limiter, so that failure carries no trap and no recorded refusal.
+        None if reports_store_count_limit(error) => CodecFailure::LimitExceeded,
+        None => CodecFailure::Trapped,
+    }
+}
+
+/// Returns true when one wasmtime error reports a store count that was reached.
+fn reports_store_count_limit(error: &wasmtime::Error) -> bool {
+    format!("{error:#}").contains("resource limit exceeded")
+}
+
+/// Reports a component that did not reach its first exported call.
+fn start_failure(store: &Store<ComponentStore>, error: wasmtime::Error) -> Error {
+    Error::codec(
+        classify_failure(store, &error),
+        format!("note codec failed to start: {error:#}"),
+    )
+}
+
+/// Enforces a byte-size cap on one component-returned string.
+fn ensure_returned_string_limit(kind: &str, value: &str, limit: usize) -> Result<()> {
+    if value.len() > limit {
+        return Err(Error::codec(
+            CodecFailure::LimitExceeded,
+            format!(
+                "note codec component returned a {kind} of {} bytes; the limit is {limit}",
+                value.len()
+            ),
+        ));
+    }
+    Ok(())
+}
+
+/// Enforces the structural felt count cap on one `parse` result.
+fn ensure_returned_felt_limit(fqn: &str, count: usize, limit: usize) -> Result<()> {
+    if count > limit {
+        return Err(Error::codec(
+            CodecFailure::LimitExceeded,
+            format!("codec `{fqn}` returned {count} felts from `parse`; the limit is {limit}"),
+        ));
+    }
+    Ok(())
+}
+
+/// Converts component integers into canonical field elements.
+fn component_values_to_felts(fqn: &str, values: &[u64]) -> Result<Vec<Felt>> {
+    values
+        .iter()
+        .copied()
+        .enumerate()
+        .map(|(index, value)| {
+            Felt::new(value).map_err(|error| {
+                Error::new(format!(
+                    "codec `{fqn}` returned a noncanonical felt at index {index}: {error}"
+                ))
+            })
+        })
+        .collect()
+}
+
+/// Creates a host error for a component runtime failure.
+///
+/// The engine, the compilation, the import stubs, and the lifting of a returned value all fail
+/// this way, and a consumer sees one class for a codec the engine did not run.
+fn component_error(action: &str, error: impl core::fmt::Display) -> Error {
+    Error::codec(CodecFailure::Trapped, format!("failed to {action}: {error:#}"))
+}
+
+/// Creates a host error for an author codec rejection.
+fn codec_rejection(operation: &str, fqn: &str, message: String) -> Error {
+    Error::codec(
+        CodecFailure::Rejected,
+        format!("codec `{fqn}` rejected `{operation}`: {message}"),
+    )
+}
+
+#[cfg(test)]
+pub(crate) mod tests {
+    use std::{
+        env, fs,
+        path::{Path, PathBuf},
+        process::{Command, Output},
+        sync::{Arc, OnceLock},
+    };
+
+    use miden_core::{
+        mast::{BasicBlockNodeBuilder, DenseMastForestBuilder, MastNodeExt},
+        operations::Operation,
+    };
+    use miden_mast_package::{
+        PackageExport, PackageId, PathBuf as MastPathBuf, ProcedureExport, Section, TargetType,
+        Version,
+    };
+    use midenc_frontend_wasm_metadata::{
+        NESTED_CARGO_SCRUB_ENV, package_note_storage_schema_section_id,
+    };
+    use midenc_integration_test_support::wasm_target_is_installed;
+    use tempfile::TempDir;
+
+    use super::*;
+
+    const WASM_TARGET: &str = "wasm32-wasip2";
+    const FIXTURE_FQN: &str = "example:codec-schema/note-storage@1.0.0.ratio";
+    const DIGEST_FQN: &str = "miden:base/core-types@1.0.0.digest";
+    const FIXTURE_SCHEMA: &str = r#"
+package example:codec-schema@1.0.0;
+
+interface note-storage {
+    record ratio {
+        numerator: u64,
+        denominator: u64,
+    }
+
+    record codec-note {
+        ratio: ratio,
+    }
+
+    type storage = codec-note;
+}
+"#;
+    const EMBEDDED_CORE_SCHEMA: &str = r#"
+package example:embedded-core-schema@1.0.0;
+
+use miden:base/core-types@1.0.0;
+
+interface note-storage {
+    use core-types.{digest};
+    record embedded-core-note { value: digest }
+    type storage = embedded-core-note;
+}
+
+package miden:base@1.0.0 {
+    interface core-types {
+        record felt { inner: f32 }
+        record word { a: felt, b: felt, c: felt, d: felt }
+        record digest { inner: word }
+    }
+}
+"#;
+
+    #[test]
+    fn local_note_codec_wit_matches_canonical_document() {
+        let local = include_str!(concat!(env!("CARGO_MANIFEST_DIR"), "/wit/note-codec.wit"));
+        assert_eq!(local, miden_note_codec_wit::NOTE_CODEC_WIT);
+    }
+
+    #[test]
+    fn component_boundary_rejects_noncanonical_felts() {
+        let error =
+            component_values_to_felts("example:test/codec.value", &[Felt::ORDER]).unwrap_err();
+
+        assert!(error.to_string().contains("noncanonical felt at index 0"));
+    }
+
+    #[test]
+    fn oversized_component_is_rejected_before_compilation() {
+        let limits = CodecLimits::default();
+        let bytes = vec![0; limits.max_component_bytes + 1];
+        let error = ComponentRuntime::new(&bytes, limits.clone())
+            .err()
+            .expect("an oversized component must fail before compilation")
+            .to_string();
+
+        assert!(error.contains("pre-compilation limit"));
+        assert!(error.contains(&(limits.max_component_bytes + 1).to_string()));
+        assert!(error.contains(&limits.max_component_bytes.to_string()));
+    }
+
+    #[test]
+    fn default_limits_match_the_published_policy() {
+        let limits = CodecLimits::default();
+
+        assert_eq!(limits.fuel, 10_000_000);
+        assert_eq!(limits.max_memory_bytes, 16 * 1024 * 1024);
+        assert_eq!(limits.max_table_elements, 4_096);
+        assert_eq!(limits.max_component_bytes, crate::MAX_NOTE_CODEC_COMPONENT_BYTES);
+        assert_eq!(limits.max_supported_types, 128);
+        assert_eq!(limits.max_fqn_bytes, 512);
+        assert_eq!(limits.max_returned_felts, 4_096);
+        assert_eq!(limits.max_returned_string_bytes, 16 * 1024);
+    }
+
+    #[test]
+    fn component_store_limits_bound_table_elements() {
+        let policy = CodecLimits::default();
+        let mut limits = component_store_limits(&policy);
+        assert!(
+            ResourceLimiter::table_growing(&mut limits, 0, policy.max_table_elements, None)
+                .unwrap()
+        );
+
+        let error =
+            ResourceLimiter::table_growing(&mut limits, 0, policy.max_table_elements + 1, None)
+                .unwrap_err()
+                .to_string();
+        assert!(error.contains("growing table"), "unexpected table-limit error: {error}");
+    }
+
+    /// Builds a component that exports the note codec interface with a chosen
+    /// `supported-types` body.
+    ///
+    /// `core_declarations` adds core module text, so a test can install a trapping start
+    /// function. The other three interface functions carry their real signatures, which the
+    /// generated bindings check, and share one core function that is never called.
+    fn codec_shaped_component(core_declarations: &str, supported_types_body: &str) -> Vec<u8> {
+        let text = format!(
+            r#"(component
+                (core module $m
+                    (memory (export "memory") 1)
+                    {core_declarations}
+                    (func (export "supported-types") (result i32) {supported_types_body})
+                    (func (export "operation") (param i32 i32 i32 i32) (result i32)
+                        (i32.const 1024))
+                    (func (export "cabi_realloc") (param i32 i32 i32 i32) (result i32)
+                        (i32.const 1024)))
+                (core instance $i (instantiate $m))
+                (func $supported (result (list string))
+                    (canon lift (core func $i "supported-types")
+                        (memory $i "memory")
+                        (realloc (func $i "cabi_realloc"))))
+                (func $parse (param "type-fqn" string) (param "value" string)
+                    (result (result (list u64) (error string)))
+                    (canon lift (core func $i "operation")
+                        (memory $i "memory")
+                        (realloc (func $i "cabi_realloc"))))
+                (func $display (param "type-fqn" string) (param "value" (list u64))
+                    (result (result string (error string)))
+                    (canon lift (core func $i "operation")
+                        (memory $i "memory")
+                        (realloc (func $i "cabi_realloc"))))
+                (func $validate (param "type-fqn" string) (param "value" (list u64))
+                    (result (result (error string)))
+                    (canon lift (core func $i "operation")
+                        (memory $i "memory")
+                        (realloc (func $i "cabi_realloc"))))
+                (instance $codec
+                    (export "supported-types" (func $supported))
+                    (export "parse" (func $parse))
+                    (export "display" (func $display))
+                    (export "validate" (func $validate)))
+                (export "{CODEC_INTERFACE}" (instance $codec)))"#
+        );
+        wat::parse_str(text).unwrap()
+    }
+
+    /// Returns core module text that reports `count` string descriptors, all aliasing one
+    /// four-byte string.
+    fn aliasing_descriptors(count: usize) -> String {
+        let length = (count as u32).to_le_bytes().map(|byte| format!("\\{byte:02x}")).concat();
+        let descriptor = "\\00\\00\\00\\00\\04\\00\\00\\00".repeat(count);
+        format!(
+            r#"(data (i32.const 0) "abcd")
+               (data (i32.const 8) "\10\00\00\00{length}")
+               (data (i32.const 16) "{descriptor}")"#
+        )
+    }
+
+    #[test]
+    fn discovery_checks_the_reported_length_before_it_lifts_a_string() {
+        // Every descriptor points at the same four bytes, so lifting the whole list first would
+        // allocate far past the limit that rejects it.
+        let limits = CodecLimits::default();
+        let reported = limits.max_supported_types + 1;
+        let component = codec_shaped_component(&aliasing_descriptors(reported), "(i32.const 8)");
+
+        let error = ComponentRuntime::new(&component, limits.clone())
+            .unwrap()
+            .supported_types()
+            .expect_err("a component over the supported-type limit must be rejected");
+
+        assert!(
+            error.to_string().contains(&format!("reported {reported} types")),
+            "unexpected limit error: {error}"
+        );
+        assert!(
+            error
+                .to_string()
+                .contains(&format!("the limit is {}", limits.max_supported_types)),
+            "unexpected limit error: {error}"
+        );
+        assert_eq!(error.codec_failure(), Some(CodecFailure::LimitExceeded));
+    }
+
+    #[test]
+    fn a_trapping_start_function_is_classified() {
+        let component = codec_shaped_component(
+            r#"(func $boom unreachable)
+               (start $boom)"#,
+            "(i32.const 8)",
+        );
+
+        let error = ComponentRuntime::new(&component, CodecLimits::default())
+            .unwrap()
+            .supported_types()
+            .expect_err("a trapping start function must fail instantiation");
+
+        assert!(error.to_string().contains("failed to start"), "unexpected error: {error}");
+        assert_eq!(error.codec_failure(), Some(CodecFailure::Trapped));
+    }
+
+    #[test]
+    fn discovery_that_runs_out_of_fuel_is_classified() {
+        let component = codec_shaped_component("", "(loop $spin (br $spin)) (i32.const 8)");
+
+        let error = ComponentRuntime::new(&component, CodecLimits::default())
+            .unwrap()
+            .supported_types()
+            .expect_err("an endless `supported-types` must exhaust its fuel");
+
+        assert!(
+            error.to_string().contains("failed in `supported-types`"),
+            "unexpected error: {error}"
+        );
+        assert_eq!(error.codec_failure(), Some(CodecFailure::OutOfFuel));
+    }
+
+    #[test]
+    fn a_package_without_a_codec_section_keeps_the_standard_codecs() {
+        let mut package = test_package();
+        package.sections.push(Section::new(
+            package_note_storage_schema_section_id(),
+            FIXTURE_SCHEMA.as_bytes().to_vec(),
+        ));
+
+        let registry = CodecRegistry::load_from_package(&package).unwrap();
+
+        assert!(registry.contains(crate::FELT_FQN));
+        assert!(registry.contains(crate::WORD_FQN));
+        assert!(!registry.contains(FIXTURE_FQN));
+    }
+
+    #[test]
+    fn a_package_without_a_schema_or_a_codec_section_keeps_the_standard_codecs() {
+        // A unit `#[note]` struct emits neither section, and a host may probe any package.
+        let package = test_package();
+
+        let registry = CodecRegistry::load_from_package(&package).unwrap();
+
+        assert!(registry.contains(crate::FELT_FQN));
+        assert!(registry.contains(crate::WORD_FQN));
+        assert!(!registry.contains(FIXTURE_FQN));
+    }
+
+    #[test]
+    fn simd_components_do_not_load() {
+        let component = wat::parse_str(
+            r#"(component
+                (core module
+                    (func (export "simd")
+                        v128.const i32x4 0 0 0 0
+                        drop)))"#,
+        )
+        .unwrap();
+
+        let error = ComponentRuntime::new(&component, CodecLimits::default())
+            .err()
+            .expect("a SIMD component must not load")
+            .to_string();
+
+        assert!(error.contains("SIMD"), "unexpected engine policy error: {error}");
+    }
+
+    #[test]
+    fn threads_components_do_not_load() {
+        let component = wat::parse_str(
+            r#"(component
+                (core module
+                    (memory 1 1 shared)))"#,
+        )
+        .unwrap();
+
+        let error = ComponentRuntime::new(&component, CodecLimits::default())
+            .err()
+            .expect("a threads component must not load")
+            .to_string();
+
+        assert!(error.contains("threads"), "unexpected engine policy error: {error}");
+    }
+
+    #[test]
+    fn gc_components_do_not_load() {
+        let component = wat::parse_str(
+            r#"(component
+                (core module
+                    (type (struct))))"#,
+        )
+        .unwrap();
+
+        let error = ComponentRuntime::new(&component, CodecLimits::default())
+            .err()
+            .expect("a GC component must not load")
+            .to_string();
+
+        assert!(error.contains("gc"), "unexpected engine policy error: {error}");
+    }
+
+    #[test]
+    fn nonstandard_embedded_core_type_is_author_codec_eligible() {
+        let schema = NoteStorageSchema::from_wit_text(EMBEDDED_CORE_SCHEMA).unwrap();
+        let custom_types = schema.custom_type_fqns();
+
+        assert!(custom_types.contains(DIGEST_FQN));
+        assert!(!custom_types.contains(crate::FELT_FQN));
+        assert!(!custom_types.contains(crate::WORD_FQN));
+        validate_reported_fqns(&[DIGEST_FQN.to_owned()], &custom_types, &CodecRegistry::default())
+            .unwrap();
+    }
+
+    #[test]
+    fn package_component_registers_and_dispatches_author_codec() {
+        if !wasm_target_is_installed() {
+            eprintln!("skipping component adapter test: {WASM_TARGET} is not installed");
+            return;
+        }
+
+        let component = build_fixture_component();
+        let mut package = test_package();
+        package.sections.push(Section::new(
+            package_note_storage_schema_section_id(),
+            FIXTURE_SCHEMA.as_bytes().to_vec(),
+        ));
+        package.sections.push(Section::new(package_note_codec_section_id(), component));
+
+        let registry = CodecRegistry::load_from_package(&package).unwrap();
+        let codec = registry.codec(FIXTURE_FQN).expect("fixture ratio codec was not registered");
+        let encoded = codec.parse("3/2").unwrap();
+        assert_eq!(encoded, [Felt::new(3).unwrap(), Felt::ZERO, Felt::new(2).unwrap(), Felt::ZERO]);
+        codec.validate(&encoded).unwrap();
+        assert_eq!(codec.display(&encoded).unwrap(), "3/2");
+
+        let invalid = codec.parse("3/0").unwrap();
+        assert!(codec.validate(&invalid).unwrap_err().to_string().contains("denominator"));
+    }
+
+    #[test]
+    fn component_calls_recover_after_traps_and_enforce_fuel() {
+        if !wasm_target_is_installed() {
+            eprintln!("skipping component adapter test: {WASM_TARGET} is not installed");
+            return;
+        }
+
+        let schema = NoteStorageSchema::from_wit_text(FIXTURE_SCHEMA).unwrap();
+        let registry = CodecRegistry::load_from_component(
+            &build_fixture_component(),
+            &schema.custom_type_fqns(),
+            CodecLimits::default(),
+        )
+        .unwrap();
+        let codec = registry.codec(FIXTURE_FQN).unwrap();
+
+        let trap = codec.parse("trap").unwrap_err();
+        assert!(trap.to_string().contains("trapped in `parse`"), "unexpected error: {trap}");
+        assert_eq!(trap.codec_failure(), Some(CodecFailure::Trapped));
+        assert_eq!(codec.display(&codec.parse("3/2").unwrap()).unwrap(), "3/2");
+
+        let oversized_input = "x".repeat(CodecLimits::default().max_memory_bytes + 1);
+        let limit = codec.parse(&oversized_input).unwrap_err();
+        assert!(
+            limit.to_string().contains("exceeded a resource limit in `parse`"),
+            "unexpected error: {limit}"
+        );
+        assert_eq!(limit.codec_failure(), Some(CodecFailure::LimitExceeded));
+        assert_eq!(codec.display(&codec.parse("3/2").unwrap()).unwrap(), "3/2");
+
+        let fuel = codec.parse("loop").unwrap_err();
+        assert!(fuel.to_string().contains("ran out of fuel"), "unexpected budget error: {fuel}");
+        assert_eq!(fuel.codec_failure(), Some(CodecFailure::OutOfFuel));
+        assert_eq!(codec.display(&codec.parse("3/2").unwrap()).unwrap(), "3/2");
+
+        // An author rejection is not a sandbox failure; it carries the codec's own message.
+        let rejected = codec.validate(&codec.parse("3/0").unwrap()).unwrap_err();
+        assert!(rejected.to_string().contains("denominator"), "unexpected error: {rejected}");
+        assert_eq!(rejected.codec_failure(), Some(CodecFailure::Rejected));
+    }
+
+    #[test]
+    fn limits_reject_a_component_that_reports_too_many_types() {
+        if !wasm_target_is_installed() {
+            eprintln!("skipping component adapter test: {WASM_TARGET} is not installed");
+            return;
+        }
+
+        let mut package = test_package();
+        package.sections.push(Section::new(
+            package_note_storage_schema_section_id(),
+            FIXTURE_SCHEMA.as_bytes().to_vec(),
+        ));
+        package
+            .sections
+            .push(Section::new(package_note_codec_section_id(), build_fixture_component()));
+        let limits = CodecLimits {
+            max_supported_types: 0,
+            ..CodecLimits::default()
+        };
+
+        let error = CodecRegistry::load_from_package_with_limits(&package, limits)
+            .err()
+            .expect("a zero supported-type limit must reject the fixture codec")
+            .to_string();
+
+        assert!(error.contains("reported 1 types"), "unexpected limit error: {error}");
+        assert!(error.contains("the limit is 0"), "unexpected limit error: {error}");
+    }
+
+    #[test]
+    fn reported_fqns_cannot_replace_standard_or_unrelated_types() {
+        let standard = CodecRegistry::default();
+        let allowed = HashSet::from([FIXTURE_FQN.to_owned()]);
+
+        let collision =
+            validate_reported_fqns(&[crate::ACCOUNT_ID_FQN.to_owned()], &allowed, &standard)
+                .unwrap_err()
+                .to_string();
+        assert!(collision.contains("cannot replace the standard codec"));
+
+        let unrelated = validate_reported_fqns(
+            &["example:other/schema@1.0.0.value".to_owned()],
+            &allowed,
+            &standard,
+        )
+        .unwrap_err()
+        .to_string();
+        assert!(unrelated.contains("does not appear in the package note storage schema"));
+
+        let duplicate = validate_reported_fqns(
+            &[FIXTURE_FQN.to_owned(), FIXTURE_FQN.to_owned()],
+            &allowed,
+            &standard,
+        )
+        .unwrap_err()
+        .to_string();
+        assert!(duplicate.contains("more than once"));
+    }
+
+    #[test]
+    fn returned_values_are_size_limited() {
+        let limits = CodecLimits::default();
+        let long = "x".repeat(limits.max_returned_string_bytes + 1);
+        assert!(
+            ensure_returned_string_limit("display value", &long, limits.max_returned_string_bytes)
+                .unwrap_err()
+                .to_string()
+                .contains("the limit is")
+        );
+        let felts = ensure_returned_felt_limit(
+            FIXTURE_FQN,
+            limits.max_returned_felts + 1,
+            limits.max_returned_felts,
+        )
+        .unwrap_err();
+        assert!(felts.to_string().contains("the limit is"), "unexpected error: {felts}");
+        assert_eq!(felts.codec_failure(), Some(CodecFailure::LimitExceeded));
+    }
+
+    #[test]
+    fn package_readers_reject_duplicate_schema_and_codec_sections() {
+        let schema_id = package_note_storage_schema_section_id();
+        let codec_id = package_note_codec_section_id();
+        let mut duplicate_schema = test_package();
+        duplicate_schema
+            .sections
+            .push(Section::new(schema_id.clone(), FIXTURE_SCHEMA.as_bytes().to_vec()));
+        duplicate_schema
+            .sections
+            .push(Section::new(schema_id, FIXTURE_SCHEMA.as_bytes().to_vec()));
+        assert!(
+            NoteStorageSchema::from_package(&duplicate_schema)
+                .err()
+                .expect("duplicate schema sections must fail")
+                .to_string()
+                .contains("more than one `note_storage_schema` section")
+        );
+
+        let mut duplicate_codec = test_package();
+        duplicate_codec.sections.push(Section::new(
+            package_note_storage_schema_section_id(),
+            FIXTURE_SCHEMA.as_bytes().to_vec(),
+        ));
+        duplicate_codec.sections.push(Section::new(codec_id.clone(), Vec::new()));
+        duplicate_codec.sections.push(Section::new(codec_id, Vec::new()));
+        assert!(
+            CodecRegistry::load_from_package(&duplicate_codec)
+                .err()
+                .expect("duplicate codec sections must fail")
+                .to_string()
+                .contains("more than one `note_codec` section")
+        );
+    }
+
+    /// Builds a valid package with one procedure export.
+    fn test_package() -> Package {
+        let mut builder = DenseMastForestBuilder::new();
+        let node_id = builder
+            .push_node(BasicBlockNodeBuilder::new(vec![Operation::Add]))
+            .expect("failed to build package procedure");
+        builder.mark_root(node_id);
+        let (forest, remapping) = builder.build_with_id_map().expect("failed to build package");
+        let node_id = remapping.get(node_id).expect("package root was removed");
+        let export = ProcedureExport::new(
+            MastPathBuf::absolute("component-codec-test::run").into(),
+            Some(node_id),
+            forest[node_id].digest(),
+            None,
+        );
+
+        Package::create(
+            PackageId::from("component-codec-test"),
+            Version::new(0, 0, 0),
+            TargetType::Library,
+            Arc::new(forest),
+            [PackageExport::Procedure(export)],
+            [],
+        )
+        .expect("failed to create test package")
+    }
+
+    /// Builds the minimal author codec the component adapter tests dispatch through.
+    pub(crate) fn build_fixture_component() -> Vec<u8> {
+        static COMPONENT: OnceLock<Vec<u8>> = OnceLock::new();
+        COMPONENT.get_or_init(build_fixture_component_uncached).clone()
+    }
+
+    /// Builds the component fixture once for this test process.
+    fn build_fixture_component_uncached() -> Vec<u8> {
+        let fixture = TempDir::new().expect("failed to create component fixture directory");
+        write_fixture(fixture.path());
+        let target_dir = workspace_root().join("target/note-schema-component-test");
+        let mut command = Command::new(env::var_os("CARGO").unwrap_or_else(|| "cargo".into()));
+        command
+            .args([
+                "build",
+                "--manifest-path",
+                fixture.path().join("Cargo.toml").to_str().unwrap(),
+                "--release",
+                "--target",
+                WASM_TARGET,
+                "--offline",
+            ])
+            .env("CARGO_TARGET_DIR", &target_dir)
+            // Share the hash-keyed intermediates with the other test builds; only the
+            // name-keyed final artifacts stay in the directory above. Convention from
+            // `tests/support`.
+            .env("CARGO_BUILD_BUILD_DIR", workspace_root().join("target/miden_build_cache"));
+        for &variable in NESTED_CARGO_SCRUB_ENV {
+            command.env_remove(variable);
+        }
+        // Pin the guest rustflags after the scrub, the way the compiler builds a codec crate.
+        command.env("RUSTFLAGS", crate::NOTE_CODEC_GUEST_RUSTFLAGS);
+        let output = command.output().expect("failed to start fixture build");
+        assert_command_succeeded("building the component adapter fixture", &output);
+
+        fs::read(
+            target_dir.join(format!("{WASM_TARGET}/release/note_schema_component_fixture.wasm")),
+        )
+        .expect("component fixture did not produce its Wasm component")
+    }
+
+    /// Writes a standalone codec crate for the component adapter test.
+    fn write_fixture(root: &Path) {
+        fs::create_dir(root.join("src")).unwrap();
+        // Seed the workspace lockfile so the offline build resolves to the versions that the
+        // workspace already downloaded instead of racing the registry index.
+        fs::copy(workspace_root().join("Cargo.lock"), root.join("Cargo.lock")).unwrap();
+        let codec_path = Path::new(env!("CARGO_MANIFEST_DIR")).join("../note-codec");
+        let manifest = format!(
+            r#"[package]
+name = "note-schema-component-fixture"
+version = "0.0.0"
+edition = "2024"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+miden-note-codec = {{ path = {:?} }}
+
+[workspace]
+"#,
+            codec_path
+        );
+        fs::write(root.join("Cargo.toml"), manifest).unwrap();
+        fs::write(root.join("src/lib.rs"), fixture_source()).unwrap();
+    }
+
+    /// Returns the compiler workspace root.
+    fn workspace_root() -> PathBuf {
+        Path::new(env!("CARGO_MANIFEST_DIR"))
+            .parent()
+            .and_then(Path::parent)
+            .unwrap()
+            .to_owned()
+    }
+
+    /// Includes both output streams when one fixture command fails.
+    fn assert_command_succeeded(action: &str, output: &Output) {
+        assert!(
+            output.status.success(),
+            "failed while {action}\nstdout:\n{}\nstderr:\n{}",
+            String::from_utf8_lossy(&output.stdout),
+            String::from_utf8_lossy(&output.stderr),
+        );
+    }
+
+    /// Builds the fixture source around the schema shared with host-side assertions.
+    fn fixture_source() -> String {
+        [
+            r##"
+use miden_note_codec::AuthorTypeCodec;
+
+miden_note_codec::from_wit_text!(r#""##,
+            FIXTURE_SCHEMA,
+            r##""#);
+
+#[miden_note_codec::note_codec]
+impl AuthorTypeCodec for Ratio {
+    fn parse(value: &str) -> Result<Self, String> {
+        if value == "trap" {
+            panic!("fixture trap");
+        }
+        if value == "loop" {
+            loop {
+                std::hint::black_box(());
+            }
+        }
+        let (numerator, denominator) = value
+            .split_once('/')
+            .ok_or_else(|| "a ratio must use `numerator/denominator`".to_owned())?;
+        Ok(Self {
+            numerator: numerator.parse::<u64>().map_err(|error| error.to_string())?,
+            denominator: denominator.parse::<u64>().map_err(|error| error.to_string())?,
+        })
+    }
+
+    fn display(&self) -> String {
+        format!("{}/{}", self.numerator, self.denominator)
+    }
+
+    fn validate(&self) -> Result<(), String> {
+        if self.denominator == 0 {
+            Err("the denominator must not be zero".to_owned())
+        } else {
+            Ok(())
+        }
+    }
+}
+
+miden_note_codec::export_codecs!();
+"##,
+        ]
+        .concat()
+    }
+}
diff --git a/sdk/note-schema/src/codec_structure.rs b/sdk/note-schema/src/codec_structure.rs
new file mode 100644
index 0000000000..e3dcd53e10
--- /dev/null
+++ b/sdk/note-schema/src/codec_structure.rs
@@ -0,0 +1,1011 @@
+//! Wasm feature and structural policy for note codec components.
+//!
+//! Parsing, compilation, and instantiation cost work before any fuel budget applies, so a byte
+//! cap alone does not bound that work. A small binary can declare thousands of tiny functions,
+//! thousands of globals, or a component tree whose instantiations expand exponentially.
+//!
+//! The rules are fixed policy. The producer applies them when it attaches a codec, and every
+//! consumer applies them when it loads one. [`validate_note_codec_component`] runs the whole
+//! policy in one place. It checks that:
+//!
+//! - the component fits in the caller's byte budget;
+//! - the component validates under [`NOTE_CODEC_WASM_FEATURES`];
+//! - the component declares no component-level start function;
+//! - each core module stays under its own counts, each of its function types stays under the
+//!   parameter and result caps, and its code section keeps a plausible average function size;
+//! - the component tree stays under its budgets for core modules and nesting depth;
+//! - one instantiation of any component in the tree stays under its budgets for core
+//!   instantiations, component instantiations, linear memories, and tables;
+//! - each kind of component-level entry stays under its cap for the whole tree.
+//!
+//! The walk counts what an instantiation creates, not what the tree declares. A core module that
+//! is instantiated twice counts twice, and a nested component contributes what one instantiation
+//! of it creates, once per instantiation. A consumer store admits the same counts, so a component
+//! that passes the walk instantiates inside the store limits.
+//!
+//! The walk rejects only a component-level start function. A core module keeps its own start
+//! function, which runs at instantiation under the consumer fuel budget and store limits.
+//!
+//! Nothing else is checked here. The producer checks the exported codec interface, and a
+//! consumer bounds the run time of a codec call with fuel and store limits.
+
+use wasmparser::{
+    ComponentAlias, ComponentExternalKind, ComponentInstance, ComponentOuterAliasKind,
+    ComponentTypeRef, Encoding, FuncValidatorAllocations, Instance, Parser, Payload, TypeRef,
+    ValidPayload, Validator, WasmFeatures,
+};
+
+use crate::{CodecFailure, Error, Result};
+
+/// Wasm proposals a note codec component may use.
+///
+/// The producer and every consumer validate against this constant, so the accepted set does not
+/// depend on the Cargo features a host compiled its engine with. The set holds the proposals the
+/// `wasm32-wasip2` target emits, the component model, and floating point. Every other proposal is
+/// off, including SIMD, threads, garbage collection, typed function references, and the
+/// asynchronous component-model additions.
+///
+/// The value is written bit by bit instead of subtracting from `WasmFeatures::default()` or
+/// `WasmFeatures::all()`, so a wasmparser upgrade cannot widen the policy.
+pub const NOTE_CODEC_WASM_FEATURES: WasmFeatures = WasmFeatures::COMPONENT_MODEL
+    .union(WasmFeatures::FLOATS)
+    .union(WasmFeatures::MUTABLE_GLOBAL)
+    .union(WasmFeatures::SATURATING_FLOAT_TO_INT)
+    .union(WasmFeatures::SIGN_EXTENSION)
+    .union(WasmFeatures::REFERENCE_TYPES)
+    .union(WasmFeatures::MULTI_VALUE)
+    .union(WasmFeatures::BULK_MEMORY);
+
+/// Maximum functions in one core module, imported and defined.
+const MAX_MODULE_FUNCTIONS: usize = 10_000;
+
+/// Maximum globals in one core module, imported and defined.
+const MAX_MODULE_GLOBALS: usize = 1_000;
+
+/// Maximum types in one core module.
+const MAX_MODULE_TYPES: usize = 1_000;
+
+/// Maximum tables in one core module, imported and defined.
+///
+/// A module that is instantiated reaches the tighter tree-wide instantiated-table budget first.
+/// This cap constrains imported tables, and the tables of a module that is never instantiated.
+const MAX_MODULE_TABLES: usize = 100;
+
+/// Maximum linear memories in one core module, imported and defined.
+const MAX_MODULE_MEMORIES: usize = 1;
+
+/// Maximum element segments in one core module.
+const MAX_MODULE_ELEMENT_SEGMENTS: usize = 1_000;
+
+/// Maximum data segments in one core module.
+const MAX_MODULE_DATA_SEGMENTS: usize = 1_000;
+
+/// Maximum imports in one core module.
+const MAX_MODULE_IMPORTS: usize = 1_024;
+
+/// Maximum exports in one core module.
+const MAX_MODULE_EXPORTS: usize = 1_024;
+
+/// Maximum parameters in one core function type.
+const MAX_FUNCTION_PARAMS: usize = 32;
+
+/// Maximum results in one core function type.
+const MAX_FUNCTION_RESULTS: usize = 32;
+
+/// Code section size, in bytes, above which the average function size applies.
+///
+/// Small modules stay below it, so a short helper module is never rejected for its shape.
+const MIN_METERED_CODE_SECTION_BYTES: u32 = 1_000;
+
+/// Minimum average bytes per function body in a metered code section.
+///
+/// Compiled Wasm averages far above this value. A module below it is a compilation bomb:
+/// many tiny functions that each cost a fixed amount of host work.
+const MIN_AVERAGE_FUNCTION_BYTES: u32 = 40;
+
+/// Maximum core modules in one component, at any nesting level.
+const MAX_CORE_MODULES: usize = 16;
+
+/// Maximum component nesting depth.
+const MAX_COMPONENT_DEPTH: usize = 4;
+
+/// Maximum entries of one kind of component-level item in the whole component tree.
+///
+/// A component may split one kind over many sections, so the cap counts each kind over the
+/// whole tree: core types, component types, aliases, canonical functions, imports, and exports.
+const MAX_COMPONENT_SECTION_ITEMS: usize = 256;
+
+/// Maximum core instances one instantiation of a component creates.
+///
+/// The consumer store admits the same number of instances.
+pub(crate) const MAX_CORE_INSTANCES: usize = 32;
+
+/// Maximum nested component instances one instantiation of a component creates.
+///
+/// A `wasm32-wasip2` codec builds one nested component instance per exported interface. The
+/// budget has no consumer store counterpart: a component instance holds no core instance,
+/// memory, or table of its own, and what it creates is counted through those budgets.
+const MAX_COMPONENT_INSTANCES: usize = 8;
+
+/// Maximum tables one instantiation of a component creates.
+///
+/// The consumer store admits the same number of tables.
+pub(crate) const MAX_INSTANTIATED_TABLES: usize = 32;
+
+/// Maximum linear memories one instantiation of a component creates.
+///
+/// The consumer store admits the same number of memories.
+pub(crate) const MAX_INSTANTIATED_MEMORIES: usize = 1;
+
+/// Applies the whole note codec component policy: the byte cap, the Wasm feature set, and the
+/// structural limits.
+///
+/// `max_bytes` is the caller's byte budget. The producer passes
+/// [`MAX_NOTE_CODEC_COMPONENT_BYTES`](crate::MAX_NOTE_CODEC_COMPONENT_BYTES), and a consumer
+/// passes the cap in its own limits.
+pub fn validate_note_codec_component(component: &[u8], max_bytes: usize) -> Result<()> {
+    ensure_component_byte_limit(component.len(), max_bytes)?;
+    validate_note_codec_structure(component)
+}
+
+/// Rejects a note codec component whose Wasm features or structure fall outside the policy.
+///
+/// [`validate_note_codec_component`] is the entry point both sides call. This function is public
+/// for a caller that bounds the byte length itself.
+pub fn validate_note_codec_structure(component: &[u8]) -> Result<()> {
+    let mut validator = Validator::new_with_features(NOTE_CODEC_WASM_FEATURES);
+    // Function bodies are validated with one reusable allocation, not one per function.
+    let mut allocations = FuncValidatorAllocations::default();
+    let mut walk = StructureWalk::default();
+    for payload in Parser::new(0).parse_all(component) {
+        let payload = payload.map_err(malformed)?;
+        // Reject a start function ahead of the validator. A start function runs guest code when
+        // the component is instantiated, before the export call the limits are built around, and
+        // the validator reports only that component values are disabled.
+        if matches!(payload, Payload::ComponentStartSection { .. }) {
+            return Err(policy_rejection(
+                "note codec component declares a start function; the policy rejects a component \
+                 that runs code when it is instantiated",
+            ));
+        }
+        if let ValidPayload::Func(function, body) =
+            validator.payload(&payload).map_err(rejected_feature)?
+        {
+            let mut function = function.into_validator(allocations);
+            function.validate(&body).map_err(rejected_feature)?;
+            allocations = function.into_allocations();
+        }
+        walk.visit(payload)?;
+    }
+    Ok(())
+}
+
+/// Rejects component bytes over the caller's budget, before any parsing or compilation.
+fn ensure_component_byte_limit(byte_len: usize, limit: usize) -> Result<()> {
+    if byte_len <= limit {
+        return Ok(());
+    }
+    Err(policy_rejection(format!(
+        "note codec component is {byte_len} bytes; the pre-compilation limit is {limit}"
+    )))
+}
+
+/// The state carried while the parser walks one component.
+#[derive(Default)]
+struct StructureWalk {
+    /// One frame per core module or component the walk entered, innermost last.
+    frames: Vec<Frame>,
+    /// Core modules seen anywhere in the component.
+    core_modules: usize,
+    /// Component-level items declared anywhere in the component, one count per kind.
+    component_items: ComponentItemCounts,
+}
+
+/// Component-level items counted over the whole component tree.
+#[derive(Default)]
+struct ComponentItemCounts {
+    core_types: usize,
+    types: usize,
+    aliases: usize,
+    canonical_functions: usize,
+    imports: usize,
+    exports: usize,
+}
+
+/// One nesting level of the walk.
+enum Frame {
+    /// A core module, with the counters checked when the module ends.
+    Module(ModuleCounts),
+    /// A component, with its index spaces and what one instantiation of it creates.
+    Component(ComponentFrame),
+}
+
+/// One component nesting level.
+///
+/// An index-space entry is `None` for a core module or a component the walk cannot read, such as
+/// an imported or an aliased one. An instantiation of such an entry is rejected.
+#[derive(Default)]
+struct ComponentFrame {
+    /// The core module index space of this component.
+    core_modules: Vec<Option<ModuleRuntimeCounts>>,
+    /// The component index space of this component.
+    components: Vec<Option<CreatedCounts>>,
+    /// What one instantiation of this component creates.
+    created: CreatedCounts,
+}
+
+/// What one core module creates every time it is instantiated.
+#[derive(Clone, Copy, Default)]
+struct ModuleRuntimeCounts {
+    memories: usize,
+    tables: usize,
+}
+
+/// What one instantiation of a component creates.
+#[derive(Clone, Copy, Default)]
+struct CreatedCounts {
+    core_instances: usize,
+    component_instances: usize,
+    memories: usize,
+    tables: usize,
+}
+
+impl CreatedCounts {
+    /// Adds what one nested instantiation creates.
+    fn add(&mut self, other: Self) {
+        self.core_instances = self.core_instances.saturating_add(other.core_instances);
+        self.component_instances =
+            self.component_instances.saturating_add(other.component_instances);
+        self.memories = self.memories.saturating_add(other.memories);
+        self.tables = self.tables.saturating_add(other.tables);
+    }
+
+    /// Checks every budget that bounds one instantiation.
+    fn check(&self) -> Result<()> {
+        ensure_created_cap("core instances", self.core_instances, MAX_CORE_INSTANCES)?;
+        ensure_created_cap(
+            "component instances",
+            self.component_instances,
+            MAX_COMPONENT_INSTANCES,
+        )?;
+        ensure_created_cap("linear memories", self.memories, MAX_INSTANTIATED_MEMORIES)?;
+        ensure_created_cap("tables", self.tables, MAX_INSTANTIATED_TABLES)
+    }
+}
+
+/// Counters collected for one core module.
+#[derive(Default)]
+struct ModuleCounts {
+    types: usize,
+    functions: usize,
+    globals: usize,
+    tables: usize,
+    memories: usize,
+    element_segments: usize,
+    data_segments: usize,
+    imports: usize,
+    exports: usize,
+    /// The memories and tables one instantiation of this module creates.
+    runtime: ModuleRuntimeCounts,
+}
+
+impl ModuleCounts {
+    /// Checks every per-module cap once the module ends.
+    fn check(&self) -> Result<()> {
+        ensure_module_cap("types", self.types, MAX_MODULE_TYPES)?;
+        ensure_module_cap("functions", self.functions, MAX_MODULE_FUNCTIONS)?;
+        ensure_module_cap("globals", self.globals, MAX_MODULE_GLOBALS)?;
+        ensure_module_cap("tables", self.tables, MAX_MODULE_TABLES)?;
+        ensure_module_cap("memories", self.memories, MAX_MODULE_MEMORIES)?;
+        ensure_module_cap("element segments", self.element_segments, MAX_MODULE_ELEMENT_SEGMENTS)?;
+        ensure_module_cap("data segments", self.data_segments, MAX_MODULE_DATA_SEGMENTS)?;
+        ensure_module_cap("imports", self.imports, MAX_MODULE_IMPORTS)?;
+        ensure_module_cap("exports", self.exports, MAX_MODULE_EXPORTS)
+    }
+}
+
+impl StructureWalk {
+    /// Applies one parser payload to the current nesting level.
+    fn visit(&mut self, payload: Payload<'_>) -> Result<()> {
+        match payload {
+            Payload::Version { encoding, .. } => self.enter(encoding)?,
+            Payload::End(_) => self.leave()?,
+            Payload::TypeSection(reader) => {
+                self.module_counts()?.types += reader.count() as usize;
+                // The feature validator rejects a GC type before the walk sees the section, so
+                // only a core function type reaches this loop.
+                for ty in reader.into_iter_err_on_gc_types() {
+                    let ty = ty.map_err(rejected_feature)?;
+                    ensure_signature_cap("parameters", ty.params().len(), MAX_FUNCTION_PARAMS)?;
+                    ensure_signature_cap("results", ty.results().len(), MAX_FUNCTION_RESULTS)?;
+                }
+            }
+            Payload::ImportSection(reader) => {
+                for import in reader.into_imports() {
+                    let import = import.map_err(malformed)?;
+                    let counts = self.module_counts()?;
+                    counts.imports += 1;
+                    match import.ty {
+                        TypeRef::Func(_) | TypeRef::FuncExact(_) => counts.functions += 1,
+                        TypeRef::Global(_) => counts.globals += 1,
+                        TypeRef::Table(_) => counts.tables += 1,
+                        TypeRef::Memory(_) => counts.memories += 1,
+                        TypeRef::Tag(_) => {}
+                    }
+                }
+            }
+            Payload::FunctionSection(reader) => {
+                self.module_counts()?.functions += reader.count() as usize;
+            }
+            Payload::GlobalSection(reader) => {
+                self.module_counts()?.globals += reader.count() as usize;
+            }
+            Payload::TableSection(reader) => {
+                let count = reader.count() as usize;
+                let counts = self.module_counts()?;
+                counts.tables += count;
+                counts.runtime.tables += count;
+            }
+            Payload::MemorySection(reader) => {
+                let count = reader.count() as usize;
+                let counts = self.module_counts()?;
+                counts.memories += count;
+                counts.runtime.memories += count;
+            }
+            Payload::ElementSection(reader) => {
+                self.module_counts()?.element_segments += reader.count() as usize;
+            }
+            Payload::DataSection(reader) => {
+                self.module_counts()?.data_segments += reader.count() as usize;
+            }
+            Payload::ExportSection(reader) => {
+                self.module_counts()?.exports += reader.count() as usize;
+            }
+            Payload::CodeSectionStart { count, size, .. } => {
+                ensure_average_function_size(count, size)?;
+            }
+            Payload::InstanceSection(reader) => {
+                for instance in reader {
+                    self.visit_core_instance(instance.map_err(malformed)?)?;
+                }
+            }
+            Payload::ComponentInstanceSection(reader) => {
+                for instance in reader {
+                    self.visit_component_instance(instance.map_err(malformed)?)?;
+                }
+            }
+            Payload::CoreTypeSection(reader) => {
+                self.component_items.core_types += reader.count() as usize;
+                ensure_component_item_cap("core types", self.component_items.core_types)?;
+            }
+            Payload::ComponentTypeSection(reader) => {
+                self.component_items.types += reader.count() as usize;
+                ensure_component_item_cap("types", self.component_items.types)?;
+            }
+            Payload::ComponentAliasSection(reader) => {
+                for alias in reader {
+                    let alias = alias.map_err(malformed)?;
+                    self.component_items.aliases += 1;
+                    ensure_component_item_cap("aliases", self.component_items.aliases)?;
+                    self.declare_aliased_item(&alias)?;
+                }
+            }
+            Payload::ComponentCanonicalSection(reader) => {
+                self.component_items.canonical_functions += reader.count() as usize;
+                ensure_component_item_cap(
+                    "canonical functions",
+                    self.component_items.canonical_functions,
+                )?;
+            }
+            Payload::ComponentImportSection(reader) => {
+                for import in reader {
+                    let import = import.map_err(malformed)?;
+                    self.component_items.imports += 1;
+                    ensure_component_item_cap("imports", self.component_items.imports)?;
+                    match import.ty {
+                        ComponentTypeRef::Module(_) => self.declare_core_module(None)?,
+                        ComponentTypeRef::Component(_) => self.declare_component(None)?,
+                        _ => {}
+                    }
+                }
+            }
+            Payload::ComponentExportSection(reader) => {
+                self.component_items.exports += reader.count() as usize;
+                ensure_component_item_cap("exports", self.component_items.exports)?;
+            }
+            _ => {}
+        }
+        Ok(())
+    }
+
+    /// Opens one nesting level and checks the component-wide caps.
+    fn enter(&mut self, encoding: Encoding) -> Result<()> {
+        match encoding {
+            Encoding::Module => {
+                self.core_modules += 1;
+                if self.core_modules > MAX_CORE_MODULES {
+                    return Err(policy_rejection(format!(
+                        "note codec component has {} core modules; the limit is {MAX_CORE_MODULES}",
+                        self.core_modules
+                    )));
+                }
+                self.frames.push(Frame::Module(ModuleCounts::default()));
+            }
+            Encoding::Component => {
+                self.frames.push(Frame::Component(ComponentFrame::default()));
+                let depth =
+                    self.frames.iter().filter(|frame| matches!(frame, Frame::Component(_))).count();
+                if depth > MAX_COMPONENT_DEPTH {
+                    return Err(policy_rejection(format!(
+                        "note codec component nests components {depth} deep; the limit is \
+                         {MAX_COMPONENT_DEPTH}"
+                    )));
+                }
+            }
+        }
+        Ok(())
+    }
+
+    /// Closes one nesting level and records what it creates in the component that declares it.
+    fn leave(&mut self) -> Result<()> {
+        match self.frames.pop() {
+            Some(Frame::Module(counts)) => {
+                counts.check()?;
+                // The module now holds an index in the core module index space of the component
+                // that declares it.
+                self.declare_core_module(Some(counts.runtime))
+            }
+            Some(Frame::Component(frame)) => self.declare_component(Some(frame.created)),
+            // An unbalanced end cannot happen: the parser reports one `End` for every header it
+            // accepted.
+            None => Ok(()),
+        }
+    }
+
+    /// Counts one core instantiation and what it creates.
+    fn visit_core_instance(&mut self, instance: Instance<'_>) -> Result<()> {
+        // An instance built from exports names items other instances already created.
+        let created = match instance {
+            Instance::Instantiate { module_index, .. } => {
+                let module = self.instantiated_core_module(module_index)?;
+                CreatedCounts {
+                    core_instances: 1,
+                    component_instances: 0,
+                    memories: module.memories,
+                    tables: module.tables,
+                }
+            }
+            Instance::FromExports(_) => CreatedCounts {
+                core_instances: 1,
+                ..CreatedCounts::default()
+            },
+        };
+        self.record_created(created)
+    }
+
+    /// Counts one component instantiation and what it creates.
+    fn visit_component_instance(&mut self, instance: ComponentInstance<'_>) -> Result<()> {
+        // An instance built from exports names items other instances already created.
+        let ComponentInstance::Instantiate {
+            component_index, ..
+        } = instance
+        else {
+            return Ok(());
+        };
+        let mut created = self.instantiated_component(component_index)?;
+        created.component_instances = created.component_instances.saturating_add(1);
+        self.record_created(created)
+    }
+
+    /// Adds what one instantiation creates to the component the walk is inside.
+    fn record_created(&mut self, created: CreatedCounts) -> Result<()> {
+        let frame = self.component_frame()?;
+        frame.created.add(created);
+        frame.created.check()
+    }
+
+    /// Returns what one instantiation of a core module of the current component creates.
+    fn instantiated_core_module(&mut self, module_index: u32) -> Result<ModuleRuntimeCounts> {
+        let frame = self.component_frame()?;
+        frame.core_modules.get(module_index as usize).copied().flatten().ok_or_else(|| {
+            policy_rejection(format!(
+                "note codec component instantiates core module {module_index}, which the policy \
+                 cannot read; a codec instantiates only the core modules it defines"
+            ))
+        })
+    }
+
+    /// Returns what one instantiation of a nested component of the current component creates.
+    fn instantiated_component(&mut self, component_index: u32) -> Result<CreatedCounts> {
+        let frame = self.component_frame()?;
+        frame
+            .components
+            .get(component_index as usize)
+            .copied()
+            .flatten()
+            .ok_or_else(|| {
+                policy_rejection(format!(
+                    "note codec component instantiates component {component_index}, which the \
+                     policy cannot read; a codec instantiates only the components it defines"
+                ))
+            })
+    }
+
+    /// Adds one core module to the index space of the component the walk is inside.
+    ///
+    /// A core module at the top level belongs to no component index space, so it is dropped.
+    fn declare_core_module(&mut self, created: Option<ModuleRuntimeCounts>) -> Result<()> {
+        if let Some(Frame::Component(frame)) = self.frames.last_mut() {
+            frame.core_modules.push(created);
+        }
+        Ok(())
+    }
+
+    /// Adds one component to the index space of the component the walk is inside.
+    ///
+    /// The root component belongs to no component index space, so it is dropped.
+    fn declare_component(&mut self, created: Option<CreatedCounts>) -> Result<()> {
+        if let Some(Frame::Component(frame)) = self.frames.last_mut() {
+            frame.components.push(created);
+        }
+        Ok(())
+    }
+
+    /// Adds one aliased core module or component to the current index spaces.
+    fn declare_aliased_item(&mut self, alias: &ComponentAlias<'_>) -> Result<()> {
+        match aliased_item_kind(alias) {
+            Some(AliasedItem::CoreModule) => self.declare_core_module(None),
+            Some(AliasedItem::Component) => self.declare_component(None),
+            None => Ok(()),
+        }
+    }
+
+    /// Returns the frame of the component the walk is inside.
+    ///
+    /// Component sections appear only inside a component. A component section anywhere else is a
+    /// malformed layout, and the walk fails closed instead of guessing a frame for it.
+    fn component_frame(&mut self) -> Result<&mut ComponentFrame> {
+        match self.frames.last_mut() {
+            Some(Frame::Component(frame)) => Ok(frame),
+            _ => Err(policy_rejection(
+                "note codec component is malformed: a component section appears outside a \
+                 component",
+            )),
+        }
+    }
+
+    /// Returns the counters of the core module the walk is inside.
+    ///
+    /// Core sections appear only inside a core module. A core section anywhere else is a
+    /// malformed layout, and the walk fails closed instead of guessing a frame for it.
+    fn module_counts(&mut self) -> Result<&mut ModuleCounts> {
+        match self.frames.last_mut() {
+            Some(Frame::Module(counts)) => Ok(counts),
+            _ => Err(policy_rejection(
+                "note codec component is malformed: a core section appears outside a core module",
+            )),
+        }
+    }
+}
+
+/// An index space one alias adds an item to.
+enum AliasedItem {
+    CoreModule,
+    Component,
+}
+
+/// Returns the index space one alias adds an item to, if the walk tracks that space.
+fn aliased_item_kind(alias: &ComponentAlias<'_>) -> Option<AliasedItem> {
+    match alias {
+        ComponentAlias::InstanceExport {
+            kind: ComponentExternalKind::Module,
+            ..
+        }
+        | ComponentAlias::Outer {
+            kind: ComponentOuterAliasKind::CoreModule,
+            ..
+        } => Some(AliasedItem::CoreModule),
+        ComponentAlias::InstanceExport {
+            kind: ComponentExternalKind::Component,
+            ..
+        }
+        | ComponentAlias::Outer {
+            kind: ComponentOuterAliasKind::Component,
+            ..
+        } => Some(AliasedItem::Component),
+        _ => None,
+    }
+}
+
+/// Reports a core module that is over one of its caps.
+fn ensure_module_cap(kind: &str, observed: usize, limit: usize) -> Result<()> {
+    if observed > limit {
+        return Err(policy_rejection(format!(
+            "note codec component has a core module with {observed} {kind}; the limit is {limit}"
+        )));
+    }
+    Ok(())
+}
+
+/// Reports a component that creates too much when it is instantiated.
+fn ensure_created_cap(kind: &str, observed: usize, limit: usize) -> Result<()> {
+    if observed > limit {
+        return Err(policy_rejection(format!(
+            "note codec component creates {observed} {kind} when it is instantiated; the limit is \
+             {limit}"
+        )));
+    }
+    Ok(())
+}
+
+/// Reports a core function type that is over its parameter or result cap.
+fn ensure_signature_cap(kind: &str, observed: usize, limit: usize) -> Result<()> {
+    if observed > limit {
+        return Err(policy_rejection(format!(
+            "note codec component has a function type with {observed} {kind}; the limit is {limit}"
+        )));
+    }
+    Ok(())
+}
+
+/// Reports a component tree that is over the cap for one kind of component-level item.
+fn ensure_component_item_cap(kind: &str, observed: usize) -> Result<()> {
+    if observed > MAX_COMPONENT_SECTION_ITEMS {
+        return Err(policy_rejection(format!(
+            "note codec component has {observed} component {kind}; the limit is \
+             {MAX_COMPONENT_SECTION_ITEMS}"
+        )));
+    }
+    Ok(())
+}
+
+/// Reports a code section built from many tiny functions.
+fn ensure_average_function_size(count: u32, size: u32) -> Result<()> {
+    if size < MIN_METERED_CODE_SECTION_BYTES || count == 0 {
+        return Ok(());
+    }
+    let average = size / count;
+    if average < MIN_AVERAGE_FUNCTION_BYTES {
+        return Err(policy_rejection(format!(
+            "note codec component has a core module with {count} functions in {size} bytes of \
+             code, an average of {average} bytes; the limit is {MIN_AVERAGE_FUNCTION_BYTES} bytes \
+             per function"
+        )));
+    }
+    Ok(())
+}
+
+/// Reports bytes that do not parse as a component.
+fn malformed(error: wasmparser::BinaryReaderError) -> Error {
+    policy_rejection(format!("note codec component is malformed: {error}"))
+}
+
+/// Reports a component that does not validate under [`NOTE_CODEC_WASM_FEATURES`].
+fn rejected_feature(error: wasmparser::BinaryReaderError) -> Error {
+    policy_rejection(format!(
+        "note codec component uses a Wasm feature the policy rejects: {error}"
+    ))
+}
+
+/// Creates an error for a component the structural load policy does not admit.
+///
+/// Every rejection carries one class, so a consumer reports a codec the policy refused the same
+/// way it reports a codec that ran past a host limit.
+fn policy_rejection(message: impl Into<String>) -> Error {
+    Error::codec(CodecFailure::LimitExceeded, message)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    /// Wraps core module text in a component and assembles it.
+    fn component(core_module: &str) -> Vec<u8> {
+        wat::parse_str(format!("(component (core module {core_module}))")).unwrap()
+    }
+
+    /// Validates one component with a byte budget that never trips.
+    fn validate(component: &[u8]) -> Result<()> {
+        validate_note_codec_component(component, usize::MAX)
+    }
+
+    #[test]
+    fn minimal_component_passes() {
+        validate(&component("(func)")).unwrap();
+    }
+
+    #[test]
+    fn the_wasm_feature_policy_is_exact() {
+        // Destructuring is exhaustive on purpose: a wasmparser upgrade that adds a proposal
+        // fails to compile here, so the policy cannot widen without a decision.
+        let wasmparser::WasmFeaturesInflated {
+            mutable_global,
+            saturating_float_to_int,
+            sign_extension,
+            reference_types,
+            multi_value,
+            bulk_memory,
+            simd,
+            relaxed_simd,
+            threads,
+            shared_everything_threads,
+            tail_call,
+            floats,
+            multi_memory,
+            exceptions,
+            memory64,
+            extended_const,
+            component_model,
+            function_references,
+            memory_control,
+            gc,
+            custom_page_sizes,
+            legacy_exceptions,
+            gc_types,
+            stack_switching,
+            wide_arithmetic,
+            cm_values,
+            cm_nested_names,
+            cm_async,
+            cm_async_stackful,
+            cm_more_async_builtins,
+            cm_threading,
+            cm_error_context,
+            cm_fixed_length_lists,
+            cm_gc,
+            call_indirect_overlong,
+            bulk_memory_opt,
+            custom_descriptors,
+            compact_imports,
+            cm_map,
+            cm64,
+        } = NOTE_CODEC_WASM_FEATURES.inflate();
+
+        for (name, required) in [
+            ("component model", component_model),
+            ("floats", floats),
+            ("mutable globals", mutable_global),
+            ("saturating float to int", saturating_float_to_int),
+            ("sign extension", sign_extension),
+            ("reference types", reference_types),
+            ("call-indirect overlong", call_indirect_overlong),
+            ("multi value", multi_value),
+            ("bulk memory", bulk_memory),
+            ("bulk memory opt", bulk_memory_opt),
+        ] {
+            assert!(required, "the policy must accept {name}");
+        }
+
+        for (name, rejected) in [
+            ("simd", simd),
+            ("relaxed simd", relaxed_simd),
+            ("threads", threads),
+            ("shared everything threads", shared_everything_threads),
+            ("tail call", tail_call),
+            ("multi memory", multi_memory),
+            ("exceptions", exceptions),
+            ("legacy exceptions", legacy_exceptions),
+            ("memory64", memory64),
+            ("extended const", extended_const),
+            ("function references", function_references),
+            ("memory control", memory_control),
+            ("gc", gc),
+            ("gc types", gc_types),
+            ("custom page sizes", custom_page_sizes),
+            ("stack switching", stack_switching),
+            ("wide arithmetic", wide_arithmetic),
+            ("component model values", cm_values),
+            ("component model nested names", cm_nested_names),
+            ("component model async", cm_async),
+            ("component model stackful async", cm_async_stackful),
+            ("component model async builtins", cm_more_async_builtins),
+            ("component model threading", cm_threading),
+            ("component model error context", cm_error_context),
+            ("component model fixed length lists", cm_fixed_length_lists),
+            ("component model gc", cm_gc),
+            ("component model maps", cm_map),
+            ("component model 64-bit contexts", cm64),
+            ("custom descriptors", custom_descriptors),
+            ("compact imports", compact_imports),
+        ] {
+            assert!(!rejected, "the policy must reject {name}");
+        }
+    }
+
+    #[test]
+    fn oversized_components_are_rejected_before_parsing() {
+        let error = validate_note_codec_component(&[0; 8], 4).unwrap_err().to_string();
+
+        assert!(error.contains("is 8 bytes"), "unexpected error: {error}");
+        assert!(error.contains("the pre-compilation limit is 4"), "unexpected error: {error}");
+    }
+
+    #[test]
+    fn too_many_globals_are_rejected() {
+        let globals = "(global i32 (i32.const 0))".repeat(MAX_MODULE_GLOBALS + 1);
+        let error = validate(&component(&globals)).unwrap_err().to_string();
+
+        assert!(error.contains("1001 globals"), "unexpected error: {error}");
+        assert!(error.contains("the limit is 1000"), "unexpected error: {error}");
+    }
+
+    #[test]
+    fn oversized_function_signatures_are_rejected() {
+        let params = "i32 ".repeat(MAX_FUNCTION_PARAMS + 1);
+        let module = format!("(type (func (param {params})))");
+        let error = validate(&component(&module)).unwrap_err().to_string();
+
+        assert!(error.contains("33 parameters"), "unexpected error: {error}");
+        assert!(error.contains("the limit is 32"), "unexpected error: {error}");
+    }
+
+    #[test]
+    fn many_tiny_functions_are_rejected() {
+        let error = validate(&component(&"(func)".repeat(600))).unwrap_err().to_string();
+
+        assert!(error.contains("600 functions"), "unexpected error: {error}");
+        assert!(error.contains("bytes per function"), "unexpected error: {error}");
+    }
+
+    #[test]
+    fn malformed_bytes_are_rejected() {
+        let error = validate(b"not a component").unwrap_err().to_string();
+
+        assert!(error.contains("note codec component is malformed"), "unexpected error: {error}");
+    }
+
+    #[test]
+    fn what_a_nested_component_creates_is_counted_once_per_instantiation() {
+        // One instantiation of the nested component creates one memory, so two instantiations
+        // reach the memory budget. A nested component that is never instantiated creates
+        // nothing.
+        let text = "(component
+                (component $inner
+                    (core module $m (memory 1))
+                    (core instance (instantiate $m)))
+                (instance (instantiate $inner))
+                (instance (instantiate $inner)))";
+        let error = validate(&wat::parse_str(text).unwrap()).unwrap_err().to_string();
+
+        assert!(
+            error.contains("creates 2 linear memories when it is instantiated"),
+            "unexpected error: {error}"
+        );
+        assert!(
+            error.contains(&format!("the limit is {MAX_INSTANTIATED_MEMORIES}")),
+            "unexpected error: {error}"
+        );
+    }
+
+    #[test]
+    fn a_component_that_is_never_instantiated_creates_nothing() {
+        let text = "(component
+                (component $unused
+                    (core module $m (memory 1))
+                    (core instance (instantiate $m)))
+                (core module $m (memory 1))
+                (core instance (instantiate $m)))";
+
+        validate(&wat::parse_str(text).unwrap()).unwrap();
+    }
+
+    #[test]
+    fn too_many_component_instances_are_rejected() {
+        let instantiate = "(instance (instantiate $inner))".repeat(MAX_COMPONENT_INSTANCES + 1);
+        let text = format!("(component (component $inner) {instantiate})");
+        let error = validate(&wat::parse_str(text).unwrap()).unwrap_err().to_string();
+
+        assert!(
+            error.contains(&format!("creates {} component instances", MAX_COMPONENT_INSTANCES + 1)),
+            "unexpected error: {error}"
+        );
+    }
+
+    #[test]
+    fn instantiated_memories_are_counted_across_core_modules() {
+        let text = "(component
+                (core module $a (memory 1))
+                (core module $b (memory 1))
+                (core instance (instantiate $a))
+                (core instance (instantiate $b)))";
+        let error = validate(&wat::parse_str(text).unwrap()).unwrap_err().to_string();
+
+        assert!(
+            error.contains("creates 2 linear memories when it is instantiated"),
+            "unexpected error: {error}"
+        );
+        assert!(
+            error.contains(&format!("the limit is {MAX_INSTANTIATED_MEMORIES}")),
+            "unexpected error: {error}"
+        );
+    }
+
+    #[test]
+    fn one_module_instantiated_twice_is_counted_twice() {
+        // The budgets count what instantiation creates, not what the tree declares, so one
+        // memory-defining module reaches the memory budget when it is instantiated twice.
+        let text = r#"(component
+                (core module $m (memory 1) (func (export "f")))
+                (core instance $a (instantiate $m))
+                (core instance $b (instantiate $m)))"#;
+        let error = validate(&wat::parse_str(text).unwrap()).unwrap_err().to_string();
+
+        assert!(
+            error.contains("creates 2 linear memories when it is instantiated"),
+            "unexpected error: {error}"
+        );
+    }
+
+    #[test]
+    fn a_core_module_the_walk_cannot_read_is_not_instantiable() {
+        let text = r#"(component
+                (import "m" (core module $m))
+                (core instance (instantiate $m)))"#;
+        let error = validate(&wat::parse_str(text).unwrap()).unwrap_err().to_string();
+
+        assert!(error.contains("which the policy cannot read"), "unexpected error: {error}");
+    }
+
+    #[test]
+    fn component_items_of_one_kind_are_capped_across_sections() {
+        // Component sections repeat, so the cap counts one kind over the whole tree. A core
+        // module between the two type sections keeps them apart in the encoding.
+        let types = |count: usize| "(type u8)".repeat(count);
+        let text = format!(
+            "(component {first} (core module) {second})",
+            first = types(MAX_COMPONENT_SECTION_ITEMS),
+            second = types(1),
+        );
+        let error = validate(&wat::parse_str(text).unwrap()).unwrap_err().to_string();
+
+        assert!(
+            error.contains(&format!("{} component types", MAX_COMPONENT_SECTION_ITEMS + 1)),
+            "unexpected error: {error}"
+        );
+        assert!(
+            error.contains(&format!("the limit is {MAX_COMPONENT_SECTION_ITEMS}")),
+            "unexpected error: {error}"
+        );
+    }
+
+    #[test]
+    fn too_many_module_types_are_rejected() {
+        let types = "(type (func (param i32)))".repeat(MAX_MODULE_TYPES + 1);
+        let error = validate(&component(&types)).unwrap_err().to_string();
+
+        assert!(
+            error.contains(&format!("{} types", MAX_MODULE_TYPES + 1)),
+            "unexpected error: {error}"
+        );
+    }
+
+    #[test]
+    fn every_structural_rejection_carries_a_class() {
+        let error = validate(b"not a component").unwrap_err();
+
+        assert_eq!(error.codec_failure(), Some(crate::CodecFailure::LimitExceeded));
+    }
+
+    #[test]
+    fn component_start_functions_are_rejected() {
+        let text = r#"(component
+            (core module $m (func (export "f")))
+            (core instance $i (instantiate $m))
+            (func $f (canon lift (core func $i "f")))
+            (start $f))"#;
+        let error = validate(&wat::parse_str(text).unwrap()).unwrap_err().to_string();
+
+        assert!(error.contains("declares a start function"), "unexpected error: {error}");
+    }
+
+    #[cfg(feature = "codec-component")]
+    #[test]
+    fn fixture_component_passes() {
+        if !midenc_integration_test_support::wasm_target_is_installed() {
+            eprintln!("skipping the structural limit fixture test: wasm32-wasip2 is not installed");
+            return;
+        }
+
+        validate(&crate::codec_component::tests::build_fixture_component()).unwrap();
+    }
+}
diff --git a/sdk/note-schema/src/error.rs b/sdk/note-schema/src/error.rs
new file mode 100644
index 0000000000..d134986fdb
--- /dev/null
+++ b/sdk/note-schema/src/error.rs
@@ -0,0 +1,76 @@
+//! Error types for note storage schemas.
+
+use core::fmt;
+
+/// Why a bundled codec did not return a value.
+///
+/// The class covers the whole life of a codec call: the structural load policy, the compilation
+/// of the component, the instantiation that precedes the call, the call itself, and the host
+/// caps applied to what the call returned.
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+pub enum CodecFailure {
+    /// The call used its whole fuel budget.
+    OutOfFuel,
+    /// The structural load policy rejected the component, or a host limit was exceeded in the
+    /// guest or in the returned value.
+    LimitExceeded,
+    /// The component trapped, or the engine rejected the component or the call.
+    Trapped,
+    /// The codec returned its own rejection message.
+    Rejected,
+}
+
+/// An error reported while reading, encoding, or decoding a note storage schema.
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct Error {
+    message: String,
+    codec_failure: Option<CodecFailure>,
+}
+
+impl Error {
+    /// Creates an error with an actionable message.
+    pub fn new(message: impl Into<String>) -> Self {
+        Self {
+            message: message.into(),
+            codec_failure: None,
+        }
+    }
+
+    /// Creates an error that reports how a bundled codec failed.
+    ///
+    /// The structural load policy and the bundled codec adapter report a failure class.
+    pub(crate) fn codec(kind: CodecFailure, message: impl Into<String>) -> Self {
+        Self {
+            message: message.into(),
+            codec_failure: Some(kind),
+        }
+    }
+
+    /// Returns the failure class of a bundled codec failure.
+    ///
+    /// The structural load policy classifies every rejection it reports, and the bundled codec
+    /// adapter classifies every compilation, instantiation, call, and host cap failure. Errors
+    /// from other sources, such as a schema that does not parse, return `None`.
+    pub fn codec_failure(&self) -> Option<CodecFailure> {
+        self.codec_failure
+    }
+
+    /// Adds context before the current error message.
+    pub(crate) fn context(self, context: impl fmt::Display) -> Self {
+        Self {
+            message: format!("{context}: {}", self.message),
+            codec_failure: self.codec_failure,
+        }
+    }
+}
+
+impl fmt::Display for Error {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.write_str(&self.message)
+    }
+}
+
+impl std::error::Error for Error {}
+
+/// A result returned by note storage schema operations.
+pub type Result<T> = core::result::Result<T, Error>;
diff --git a/sdk/note-schema/src/lib.rs b/sdk/note-schema/src/lib.rs
new file mode 100644
index 0000000000..39ad7efa0a
--- /dev/null
+++ b/sdk/note-schema/src/lib.rs
@@ -0,0 +1,51 @@
+//! Host-side access to note storage schemas embedded in Miden packages.
+//!
+//! # Felt layout
+//!
+//! The layout is structural over the resolved WIT type tree. The record
+//! `miden:base/core-types@1.0.0.felt` is one felt. A `u64` uses two felts in low-then-high
+//! `u32` limb order. A `u32`, `u8`, or `bool` uses one range-checked felt. An `option<T>` uses one
+//! tag felt followed by its payload when present. A variant uses one declaration-ordinal tag felt
+//! followed by the selected case payload. Record fields concatenate in declaration order.
+//!
+//! Encoding and decoding use [`miden_field_repr::FeltReader`] and
+//! [`miden_field_repr::FeltWriter`]. Codecs only parse, display, and validate values. They do not
+//! change this layout.
+
+#![deny(missing_docs)]
+
+mod artifact;
+mod builder;
+mod codec;
+#[cfg(feature = "codec-component")]
+mod codec_component;
+mod codec_structure;
+mod error;
+mod schema;
+mod section;
+mod value;
+
+#[cfg(test)]
+mod tests;
+
+pub use artifact::{NotePackageArtifact, NotePackageResolver};
+pub use builder::NoteStorageBuilder;
+pub use codec::{
+    ACCOUNT_ID_FQN, ASSET_AMOUNT_FQN, CodecRegistry, ConsumerTypeCodec, FELT_FQN, StandardLeaf,
+    WORD_FQN,
+};
+#[cfg(feature = "codec-component")]
+pub use codec_component::CodecLimits;
+pub use codec_structure::{
+    NOTE_CODEC_WASM_FEATURES, validate_note_codec_component, validate_note_codec_structure,
+};
+pub use error::{CodecFailure, Error, Result};
+pub use miden_field::Felt;
+pub use miden_protocol::note::NoteStorage;
+pub use schema::{
+    FeltLayout, MAX_NOTE_CODEC_COMPONENT_BYTES, MAX_NOTE_STORAGE_SCHEMA_BYTES,
+    MAX_NOTE_STORAGE_SCHEMA_DEPTH, MAX_NOTE_STORAGE_SCHEMA_FELTS, MAX_NOTE_STORAGE_SCHEMA_NODES,
+    MAX_NOTE_STORAGE_SCHEMA_TYPES, NOTE_CODEC_GUEST_RUSTFLAGS, NoteStorageSchema, PrimitiveType,
+    SchemaCase, SchemaField, SchemaType, SchemaTypeKind,
+};
+pub use value::{DecodedValue, DecodedValueKind};
diff --git a/sdk/note-schema/src/schema.rs b/sdk/note-schema/src/schema.rs
new file mode 100644
index 0000000000..6f25057625
--- /dev/null
+++ b/sdk/note-schema/src/schema.rs
@@ -0,0 +1,979 @@
+//! Resolved note storage schema model.
+
+use std::{
+    collections::{HashMap, HashSet},
+    sync::Arc,
+};
+
+use miden_mast_package::Package;
+use miden_protocol::MAX_NOTE_STORAGE_ITEMS;
+use midenc_frontend_wasm_metadata::{
+    PACKAGE_NOTE_STORAGE_SCHEMA_SECTION_ID, package_note_storage_schema_section_id,
+    trim_trailing_nuls,
+};
+use wit_parser::{Resolve, Type, TypeDefKind, TypeId, TypeOwner};
+
+use crate::{
+    CodecRegistry, DecodedValue, Error, NoteStorage, NoteStorageBuilder, Result, StandardLeaf,
+    codec::FELT_FQN,
+};
+
+/// Maximum bytes accepted in an embedded note storage schema section, including alignment padding.
+///
+/// The budget allows 64 bytes of schema description per protocol note-storage item. It is derived
+/// from [`MAX_NOTE_STORAGE_ITEMS`] so schema parsing remains bounded with the protocol surface.
+pub const MAX_NOTE_STORAGE_SCHEMA_BYTES: usize = MAX_NOTE_STORAGE_ITEMS * 64;
+
+/// Maximum number of resolved WIT type definitions in a note storage schema.
+pub const MAX_NOTE_STORAGE_SCHEMA_TYPES: usize = MAX_NOTE_STORAGE_ITEMS;
+
+/// Maximum structural nesting depth accepted while resolving a note storage schema.
+///
+/// Recursion is capped at one eighth of the protocol note-storage item limit, which leaves ample
+/// room for legitimate models without allowing an attacker-controlled parser stack to grow to the
+/// full storage width.
+pub const MAX_NOTE_STORAGE_SCHEMA_DEPTH: usize = MAX_NOTE_STORAGE_ITEMS / 8;
+
+/// Maximum number of felts in the root note storage layout.
+pub const MAX_NOTE_STORAGE_SCHEMA_FELTS: usize = MAX_NOTE_STORAGE_ITEMS;
+
+/// Maximum number of nodes in the expanded note storage schema tree.
+///
+/// The resolved model is a DAG, but every structural walk over it expands that DAG into a tree:
+/// decoding, builder validation, and Rust code generation all visit a shared type once per
+/// reference. A schema of zero-felt records that names one type per level stays below the byte,
+/// type, depth, and felt limits while the expanded tree doubles at each level, so this budget
+/// bounds the expanded tree directly. It allows four expanded nodes per protocol note-storage
+/// item, which is far above any practical model.
+pub const MAX_NOTE_STORAGE_SCHEMA_NODES: usize = MAX_NOTE_STORAGE_ITEMS * 4;
+
+/// Default maximum bytes accepted for one note codec component before Wasmtime compilation.
+///
+/// This is the producer's cap and the default of `CodecLimits::max_component_bytes`, the
+/// consumer-side policy struct behind the `codec-component` feature, so a package that builds is
+/// a package that consumers accept. A host may tighten its own consumer cap.
+pub const MAX_NOTE_CODEC_COMPONENT_BYTES: usize = 4 * 1024 * 1024;
+
+/// Rustflags the nested codec build pins, so a codec crate's own cargo config cannot enable
+/// `simd128` in the guest. Mirrors the VM event-handler plugin.
+///
+/// The pin covers one target feature only. The full policy is
+/// [`NOTE_CODEC_WASM_FEATURES`](crate::NOTE_CODEC_WASM_FEATURES), which the producer enforces at
+/// build time and every consumer enforces at load time.
+pub const NOTE_CODEC_GUEST_RUSTFLAGS: &str = "-C target-feature=-simd128";
+
+const _: () = assert!(MAX_NOTE_STORAGE_SCHEMA_DEPTH > 0);
+
+/// The minimum and maximum felt count for a schema type.
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+pub struct FeltLayout {
+    minimum: usize,
+    maximum: usize,
+}
+
+impl FeltLayout {
+    /// Returns the minimum number of felts accepted by this layout.
+    pub const fn minimum(self) -> usize {
+        self.minimum
+    }
+
+    /// Returns the maximum number of felts accepted by this layout.
+    pub const fn maximum(self) -> usize {
+        self.maximum
+    }
+
+    /// Returns the fixed width, or `None` for a variable-width layout.
+    pub const fn fixed_width(self) -> Option<usize> {
+        if self.minimum == self.maximum {
+            Some(self.minimum)
+        } else {
+            None
+        }
+    }
+
+    /// Creates a fixed-width layout.
+    const fn fixed(width: usize) -> Self {
+        Self {
+            minimum: width,
+            maximum: width,
+        }
+    }
+
+    /// Adds two layouts in declaration order.
+    fn concatenate(self, other: Self) -> Result<Self> {
+        let minimum = self
+            .minimum
+            .checked_add(other.minimum)
+            .ok_or_else(|| Error::new("note storage layout minimum width is too large"))?;
+        let maximum = self
+            .maximum
+            .checked_add(other.maximum)
+            .ok_or_else(|| Error::new("note storage layout maximum width is too large"))?;
+        Self::bounded(minimum, maximum)
+    }
+
+    /// Creates a layout within the protocol note-storage width.
+    ///
+    /// Every composed layout passes through this function, so no resolved type, and no resolved
+    /// root, is wider than the protocol allows.
+    fn bounded(minimum: usize, maximum: usize) -> Result<Self> {
+        if maximum > MAX_NOTE_STORAGE_SCHEMA_FELTS {
+            return Err(Error::new(format!(
+                "note storage schema layout has maximum width {maximum} felts; the protocol limit \
+                 is {MAX_NOTE_STORAGE_SCHEMA_FELTS}"
+            )));
+        }
+        Ok(Self { minimum, maximum })
+    }
+}
+
+/// A supported primitive WIT type.
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+pub enum PrimitiveType {
+    /// An unsigned 64-bit integer stored as low and high `u32` limbs.
+    U64,
+    /// An unsigned 32-bit integer stored in one felt.
+    U32,
+    /// An unsigned 8-bit integer stored in one felt.
+    U8,
+    /// A boolean stored as zero or one.
+    Bool,
+}
+
+/// The structural kind of a resolved schema type.
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum SchemaTypeKind {
+    /// The one-felt `miden:base/core-types.felt` bedrock type.
+    Felt,
+    /// A supported WIT primitive.
+    Primitive(PrimitiveType),
+    /// A record with fields in declaration order.
+    Record(Vec<SchemaField>),
+    /// An optional payload stored after a tag felt.
+    Option(Arc<SchemaType>),
+    /// A variant with declaration-ordinal cases.
+    Variant(Vec<SchemaCase>),
+}
+
+/// A resolved WIT type used by note storage.
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct SchemaType {
+    name: Option<String>,
+    fqn: Option<String>,
+    docs: Option<String>,
+    kind: SchemaTypeKind,
+    layout: FeltLayout,
+}
+
+impl SchemaType {
+    /// Returns the WIT type name when this is a named type.
+    pub fn name(&self) -> Option<&str> {
+        self.name.as_deref()
+    }
+
+    /// Returns the canonical fully-qualified WIT type name.
+    pub fn fqn(&self) -> Option<&str> {
+        self.fqn.as_deref()
+    }
+
+    /// Returns the resolved WIT documentation.
+    pub fn docs(&self) -> Option<&str> {
+        self.docs.as_deref()
+    }
+
+    /// Returns the structural type kind.
+    pub const fn kind(&self) -> &SchemaTypeKind {
+        &self.kind
+    }
+
+    /// Returns the felt layout for this type.
+    pub const fn layout(&self) -> FeltLayout {
+        self.layout
+    }
+
+    /// Classifies this type as a standard protocol leaf.
+    pub fn standard_leaf(&self) -> Option<StandardLeaf> {
+        self.fqn.as_deref().and_then(StandardLeaf::from_fqn)
+    }
+}
+
+/// A named record field in declaration order.
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct SchemaField {
+    name: String,
+    docs: Option<String>,
+    ty: Arc<SchemaType>,
+}
+
+impl SchemaField {
+    /// Returns the field's kebab-case WIT name.
+    pub fn name(&self) -> &str {
+        &self.name
+    }
+
+    /// Returns the field-level WIT documentation.
+    pub fn docs(&self) -> Option<&str> {
+        self.docs.as_deref()
+    }
+
+    /// Returns the field type.
+    pub fn ty(&self) -> &SchemaType {
+        self.ty.as_ref()
+    }
+}
+
+/// A WIT variant case in declaration order.
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct SchemaCase {
+    name: String,
+    docs: Option<String>,
+    payload: Option<Arc<SchemaType>>,
+}
+
+impl SchemaCase {
+    /// Returns the case's kebab-case WIT name.
+    pub fn name(&self) -> &str {
+        &self.name
+    }
+
+    /// Returns the case documentation.
+    pub fn docs(&self) -> Option<&str> {
+        self.docs.as_deref()
+    }
+
+    /// Returns the optional case payload.
+    pub fn payload(&self) -> Option<&SchemaType> {
+        self.payload.as_deref()
+    }
+}
+
+/// A resolved note storage schema with the standard codec registry.
+#[derive(Clone)]
+pub struct NoteStorageSchema {
+    wit_text: String,
+    root: Arc<SchemaType>,
+    codecs: CodecRegistry,
+}
+
+impl NoteStorageSchema {
+    /// Reads and resolves the note storage schema section from a Miden package.
+    pub fn from_package(package: &Package) -> Result<Self> {
+        let bytes = crate::section::unique_package_section(
+            package,
+            package_note_storage_schema_section_id(),
+            PACKAGE_NOTE_STORAGE_SCHEMA_SECTION_ID,
+        )?;
+        ensure_schema_byte_limit(bytes.len())?;
+        let text = core::str::from_utf8(trim_trailing_nuls(bytes)).map_err(|err| {
+            Error::new(format!("note storage schema section is not valid UTF-8: {err}"))
+        })?;
+        Self::from_wit_text(text)
+    }
+
+    /// Resolves a note storage schema from a WIT document.
+    pub fn from_wit_text(wit_text: &str) -> Result<Self> {
+        ensure_schema_byte_limit(wit_text.len())?;
+        let wit_text = wit_text.trim_end_matches('\0');
+        let mut resolve = Resolve::default();
+        let package_id = resolve.push_str("note-storage-schema.wit", wit_text).map_err(|err| {
+            Error::new(format!("failed to resolve note storage schema WIT: {err:#}"))
+        })?;
+        if resolve.types.len() > MAX_NOTE_STORAGE_SCHEMA_TYPES {
+            return Err(Error::new(format!(
+                "note storage schema defines {} WIT types; the limit is \
+                 {MAX_NOTE_STORAGE_SCHEMA_TYPES}",
+                resolve.types.len()
+            )));
+        }
+        let package = &resolve.packages[package_id];
+        let interface_id = package.interfaces.get("note-storage").copied().ok_or_else(|| {
+            Error::new(format!(
+                "schema package `{}` does not define the `note-storage` interface",
+                package.name
+            ))
+        })?;
+        let interface = &resolve.interfaces[interface_id];
+        let storage_id = interface.types.get("storage").copied().ok_or_else(|| {
+            Error::new("the `note-storage` interface does not define the `storage` type alias")
+        })?;
+        validate_resolved_core_types(&resolve)?;
+        let root = ModelBuilder::new(&resolve).build(Type::Id(storage_id))?;
+        if !matches!(root.kind(), SchemaTypeKind::Record(_)) {
+            return Err(Error::new(format!(
+                "the `note-storage.storage` alias must resolve to a record, found {}",
+                kind_name(root.kind())
+            )));
+        }
+        let schema = Self {
+            wit_text: wit_text.to_owned(),
+            root,
+            codecs: CodecRegistry::default(),
+        };
+        schema.validate_native_leaf_shapes()?;
+        Ok(schema)
+    }
+
+    /// Returns the unpadded WIT document.
+    pub fn wit_text(&self) -> &str {
+        &self.wit_text
+    }
+
+    /// Returns the root storage record.
+    pub fn root(&self) -> &SchemaType {
+        self.root.as_ref()
+    }
+
+    /// Verifies native host mappings against the pinned standard type shapes.
+    pub fn validate_native_leaf_shapes(&self) -> Result<()> {
+        validate_model_type_shapes(&self.root, &mut HashSet::new())
+    }
+
+    /// Returns all custom named types reachable from the storage root.
+    #[cfg(feature = "codec-component")]
+    pub(crate) fn custom_type_fqns(&self) -> HashSet<String> {
+        let mut fqns = HashSet::new();
+        collect_custom_type_fqns(&self.root, &mut HashSet::new(), &mut fqns);
+        fqns
+    }
+
+    /// Returns the root felt layout.
+    pub fn layout(&self) -> FeltLayout {
+        self.root.layout
+    }
+
+    /// Returns the schema's standard codec registry.
+    pub const fn codecs(&self) -> &CodecRegistry {
+        &self.codecs
+    }
+
+    /// Replaces the codec registry used by `builder` and `decode`.
+    pub fn with_codec_registry(mut self, codecs: CodecRegistry) -> Self {
+        self.codecs = codecs;
+        self
+    }
+
+    /// Creates a string-value builder with the schema's codec registry.
+    pub fn builder(&self) -> NoteStorageBuilder<'_> {
+        self.builder_with_registry(&self.codecs)
+    }
+
+    /// Creates a string-value builder with a caller-provided codec registry.
+    pub fn builder_with_registry<'a>(
+        &'a self,
+        registry: &'a CodecRegistry,
+    ) -> NoteStorageBuilder<'a> {
+        NoteStorageBuilder::new(self, registry)
+    }
+
+    /// Decodes note storage with the schema's codec registry.
+    pub fn decode(&self, storage: &NoteStorage) -> Result<DecodedValue> {
+        self.decode_with_registry(storage, &self.codecs)
+    }
+
+    /// Decodes note storage with a caller-provided codec registry.
+    pub fn decode_with_registry(
+        &self,
+        storage: &NoteStorage,
+        registry: &CodecRegistry,
+    ) -> Result<DecodedValue> {
+        crate::value::decode(&self.root, storage, registry)
+    }
+}
+
+/// Enforces the parser input budget before WIT resolution or component work begins.
+fn ensure_schema_byte_limit(byte_len: usize) -> Result<()> {
+    if byte_len > MAX_NOTE_STORAGE_SCHEMA_BYTES {
+        return Err(Error::new(format!(
+            "note storage schema section is {byte_len} bytes; the limit is \
+             {MAX_NOTE_STORAGE_SCHEMA_BYTES}"
+        )));
+    }
+    Ok(())
+}
+
+/// Enforces the expanded-tree budget on one resolved schema type.
+///
+/// The builder memoizes shared types, so resolution stays linear. Every consumer of the model
+/// walks it as a tree, so the budget is applied to the expanded node count of each type as it is
+/// resolved. The check therefore protects decoding, builder validation, and code generation.
+fn ensure_expanded_node_limit(ty: &SchemaType, expanded_nodes: usize) -> Result<()> {
+    let limit = MAX_NOTE_STORAGE_SCHEMA_NODES;
+    if expanded_nodes > limit {
+        let name = ty.fqn().or_else(|| ty.name()).unwrap_or("<anonymous>");
+        return Err(Error::new(format!(
+            "note storage type `{name}` expands to {expanded_nodes} nodes; the limit is {limit}"
+        )));
+    }
+    Ok(())
+}
+
+/// Verifies the raw embedded core-types definitions before the model applies native mappings.
+fn validate_resolved_core_types(resolve: &Resolve) -> Result<()> {
+    let Some((_, package_id)) = resolve.package_names.iter().find(|(name, _)| {
+        name.namespace == "miden"
+            && name.name == "base"
+            && name.version.as_ref().is_some_and(|version| version.to_string() == "1.0.0")
+    }) else {
+        return Ok(());
+    };
+    let package = &resolve.packages[*package_id];
+    let Some(interface_id) = package.interfaces.get("core-types").copied() else {
+        return Ok(());
+    };
+    let interface = &resolve.interfaces[interface_id];
+
+    for leaf in StandardLeaf::ALL {
+        let name = standard_leaf_name(leaf);
+        let fields = standard_leaf_fields(leaf);
+        let Some(type_id) = interface.types.get(name).copied() else {
+            continue;
+        };
+        let type_id = follow_resolved_aliases(resolve, type_id)?;
+        let TypeDefKind::Record(record) = &resolve.types[type_id].kind else {
+            return Err(core_shape_error(name, fields));
+        };
+        if record.fields.len() != fields.len()
+            || record
+                .fields
+                .iter()
+                .zip(fields)
+                .any(|(field, expected)| field.name != *expected)
+        {
+            return Err(core_shape_error(name, fields));
+        }
+        if leaf == StandardLeaf::Felt {
+            // Miden's canonical felt uses `f32` as its WIT-level placeholder representation.
+            if !resolves_to_primitive(resolve, record.fields[0].ty, Type::F32)? {
+                return Err(core_shape_error(name, fields));
+            }
+        } else {
+            for field in &record.fields {
+                if !resolves_to_fqn(resolve, field.ty, crate::FELT_FQN)? {
+                    return Err(core_shape_error(name, fields));
+                }
+            }
+        }
+    }
+    Ok(())
+}
+
+/// Follows raw WIT aliases to their structural definition.
+fn follow_resolved_aliases(resolve: &Resolve, mut id: TypeId) -> Result<TypeId> {
+    let mut visited = HashSet::new();
+    loop {
+        if !visited.insert(id) {
+            return Err(Error::new("cyclic WIT type aliases are not supported"));
+        }
+        match resolve.types[id].kind {
+            TypeDefKind::Type(Type::Id(next)) => id = next,
+            _ => return Ok(id),
+        }
+    }
+}
+
+/// Returns true when a raw WIT type resolves to one primitive.
+fn resolves_to_primitive(resolve: &Resolve, mut ty: Type, expected: Type) -> Result<bool> {
+    let mut visited = HashSet::new();
+    loop {
+        match ty {
+            Type::Id(id) => {
+                if !visited.insert(id) {
+                    return Err(Error::new("cyclic WIT type aliases are not supported"));
+                }
+                let TypeDefKind::Type(next) = resolve.types[id].kind else {
+                    return Ok(false);
+                };
+                ty = next;
+            }
+            primitive => return Ok(primitive == expected),
+        }
+    }
+}
+
+/// Returns true when a raw WIT type resolves to one canonical FQN.
+fn resolves_to_fqn(resolve: &Resolve, ty: Type, expected: &str) -> Result<bool> {
+    let Type::Id(id) = ty else {
+        return Ok(false);
+    };
+    let id = follow_resolved_aliases(resolve, id)?;
+    Ok(ModelBuilder::new(resolve).type_fqn(id)?.as_deref() == Some(expected))
+}
+
+/// Verifies mapped type shapes in the owned schema model.
+fn validate_model_type_shapes(ty: &SchemaType, seen: &mut HashSet<String>) -> Result<()> {
+    if let Some(fqn) = ty.fqn()
+        && !seen.insert(fqn.to_owned())
+    {
+        return Ok(());
+    }
+
+    match ty.standard_leaf() {
+        Some(StandardLeaf::Felt) if !matches!(ty.kind(), SchemaTypeKind::Felt) => {
+            return Err(core_shape_error(
+                standard_leaf_name(StandardLeaf::Felt),
+                standard_leaf_fields(StandardLeaf::Felt),
+            ));
+        }
+        Some(StandardLeaf::Felt) => {}
+        Some(leaf) => {
+            validate_model_record(
+                ty,
+                standard_leaf_name(leaf),
+                standard_leaf_fields(leaf),
+                crate::FELT_FQN,
+            )?;
+        }
+        None => {}
+    }
+
+    match ty.kind() {
+        SchemaTypeKind::Record(fields) => {
+            for field in fields {
+                validate_model_type_shapes(field.ty(), seen)?;
+            }
+        }
+        SchemaTypeKind::Option(payload) => validate_model_type_shapes(payload, seen)?,
+        SchemaTypeKind::Variant(cases) => {
+            for payload in cases.iter().filter_map(SchemaCase::payload) {
+                validate_model_type_shapes(payload, seen)?;
+            }
+        }
+        SchemaTypeKind::Felt | SchemaTypeKind::Primitive(_) => {}
+    }
+    Ok(())
+}
+
+/// Returns the terminal WIT name from a canonical standard-leaf FQN.
+fn standard_leaf_name(leaf: StandardLeaf) -> &'static str {
+    leaf.fqn()
+        .rsplit_once('.')
+        .expect("standard-leaf FQNs always contain an interface separator")
+        .1
+}
+
+/// Returns the canonical record field order for a standard leaf.
+fn standard_leaf_fields(leaf: StandardLeaf) -> &'static [&'static str] {
+    match leaf {
+        StandardLeaf::Felt | StandardLeaf::AssetAmount => &["inner"],
+        StandardLeaf::Word => &["a", "b", "c", "d"],
+        StandardLeaf::AccountId => &["prefix", "suffix"],
+    }
+}
+
+/// Verifies one mapped record in the owned schema model.
+fn validate_model_record(
+    ty: &SchemaType,
+    name: &str,
+    expected_fields: &[&str],
+    expected_field_fqn: &str,
+) -> Result<()> {
+    let SchemaTypeKind::Record(fields) = ty.kind() else {
+        return Err(core_shape_error(name, expected_fields));
+    };
+    if fields.len() != expected_fields.len()
+        || fields.iter().zip(expected_fields).any(|(field, expected)| {
+            field.name() != *expected || field.ty().fqn() != Some(expected_field_fqn)
+        })
+    {
+        return Err(core_shape_error(name, expected_fields));
+    }
+    Ok(())
+}
+
+/// Creates the canonical core-type shape diagnostic.
+fn core_shape_error(name: &str, fields: &[&str]) -> Error {
+    let field_shape = if name == "felt" {
+        "inner: f32".to_owned()
+    } else {
+        fields
+            .iter()
+            .map(|field| format!("{field}: felt"))
+            .collect::<Vec<_>>()
+            .join(", ")
+    };
+    Error::new(format!(
+        "embedded WIT type `miden:base/core-types@1.0.0.{name}` does not match the pinned \
+         canonical shape `record {name} {{ {field_shape} }}`"
+    ))
+}
+
+/// Collects schema-owned types and excludes only the canonical standard leaves.
+#[cfg(feature = "codec-component")]
+fn collect_custom_type_fqns(
+    ty: &SchemaType,
+    seen: &mut HashSet<*const SchemaType>,
+    fqns: &mut HashSet<String>,
+) {
+    // Pointer identity is sufficient because ModelBuilder memoizes exactly one Arc per TypeId.
+    if !seen.insert(core::ptr::from_ref(ty)) {
+        return;
+    }
+    if let Some(fqn) = ty.fqn()
+        && ty.standard_leaf().is_none()
+    {
+        fqns.insert(fqn.to_owned());
+    }
+    match ty.kind() {
+        SchemaTypeKind::Record(fields) => {
+            for field in fields {
+                collect_custom_type_fqns(field.ty(), seen, fqns);
+            }
+        }
+        SchemaTypeKind::Option(payload) => collect_custom_type_fqns(payload, seen, fqns),
+        SchemaTypeKind::Variant(cases) => {
+            for payload in cases.iter().filter_map(SchemaCase::payload) {
+                collect_custom_type_fqns(payload, seen, fqns);
+            }
+        }
+        SchemaTypeKind::Felt | SchemaTypeKind::Primitive(_) => {}
+    }
+}
+
+/// One memoized schema node, its maximum depth, and the size of its expanded subtree.
+#[derive(Clone)]
+struct MemoizedSchemaType {
+    /// The resolved node.
+    ty: Arc<SchemaType>,
+    /// Levels of nesting below this node.
+    ///
+    /// A memoized node is reused at a deeper position than the one it was resolved at, so the
+    /// depth limit is checked again on every reuse with this value added to the new depth.
+    maximum_subtree_depth: usize,
+    /// Number of nodes a structural walk visits below and including this node.
+    expanded_nodes: usize,
+}
+
+/// Builds a memoized schema graph from a resolved WIT graph.
+struct ModelBuilder<'a> {
+    /// The resolved WIT document the schema comes from.
+    resolve: &'a Resolve,
+    /// The types the walk is inside, which reports a recursive type.
+    active: HashSet<TypeId>,
+    /// The nodes already resolved, keyed by WIT type.
+    memo: HashMap<TypeId, MemoizedSchemaType>,
+}
+
+impl<'a> ModelBuilder<'a> {
+    /// Creates a model builder for one schema package.
+    fn new(resolve: &'a Resolve) -> Self {
+        Self {
+            resolve,
+            active: HashSet::new(),
+            memo: HashMap::new(),
+        }
+    }
+
+    /// Resolves one WIT type.
+    fn build(mut self, ty: Type) -> Result<Arc<SchemaType>> {
+        self.build_type(ty, 0).map(|memoized| memoized.ty)
+    }
+
+    /// Resolves a primitive or named type.
+    fn build_type(&mut self, ty: Type, depth: usize) -> Result<MemoizedSchemaType> {
+        if depth > MAX_NOTE_STORAGE_SCHEMA_DEPTH {
+            return Err(Error::new(format!(
+                "note storage schema nesting depth {depth} exceeds the limit of \
+                 {MAX_NOTE_STORAGE_SCHEMA_DEPTH}"
+            )));
+        }
+        match ty {
+            Type::Id(id) => self.build_type_id(id, depth),
+            Type::U64 => self.primitive(PrimitiveType::U64, None, None, None),
+            Type::U32 => self.primitive(PrimitiveType::U32, None, None, None),
+            Type::U8 => self.primitive(PrimitiveType::U8, None, None, None),
+            Type::Bool => self.primitive(PrimitiveType::Bool, None, None, None),
+            unsupported => Err(Error::new(format!(
+                "WIT primitive `{unsupported:?}` is not supported in note storage schemas"
+            ))),
+        }
+    }
+
+    /// Resolves aliases to the type definition that owns the structural type.
+    fn build_type_id(&mut self, id: TypeId, depth: usize) -> Result<MemoizedSchemaType> {
+        let id = self.follow_aliases(id)?;
+        if let Some(memoized) = self.memo.get(&id) {
+            let maximum_depth = depth.saturating_add(memoized.maximum_subtree_depth);
+            if maximum_depth > MAX_NOTE_STORAGE_SCHEMA_DEPTH {
+                return Err(Error::new(format!(
+                    "note storage schema nesting depth {maximum_depth} exceeds the limit of \
+                     {MAX_NOTE_STORAGE_SCHEMA_DEPTH}"
+                )));
+            }
+            return Ok(memoized.clone());
+        }
+        if !self.active.insert(id) {
+            return Err(Error::new(
+                "recursive WIT types are not supported in note storage schemas",
+            ));
+        }
+
+        let definition = self.resolve.types[id].clone();
+        let name = definition.name.clone();
+        let docs = definition.docs.contents.clone();
+        let fqn = self.type_fqn(id)?;
+        let result = if fqn.as_deref() == Some(FELT_FQN) {
+            Ok(MemoizedSchemaType {
+                ty: Arc::new(SchemaType {
+                    name,
+                    fqn,
+                    docs,
+                    kind: SchemaTypeKind::Felt,
+                    layout: FeltLayout::fixed(1),
+                }),
+                maximum_subtree_depth: 0,
+                expanded_nodes: 1,
+            })
+        } else {
+            match definition.kind {
+                TypeDefKind::Type(ty) => self.build_named_alias(ty, name, fqn, docs),
+                TypeDefKind::Record(record) => {
+                    let mut fields = Vec::with_capacity(record.fields.len());
+                    let mut layout = FeltLayout::fixed(0);
+                    let mut maximum_subtree_depth = 0;
+                    let mut expanded_nodes = 1usize;
+                    for field in record.fields {
+                        let memoized = self.build_type(field.ty, depth + 1)?;
+                        maximum_subtree_depth =
+                            maximum_subtree_depth.max(1 + memoized.maximum_subtree_depth);
+                        expanded_nodes = expanded_nodes.saturating_add(memoized.expanded_nodes);
+                        layout = layout.concatenate(memoized.ty.layout)?;
+                        fields.push(SchemaField {
+                            name: field.name,
+                            docs: field.docs.contents,
+                            ty: memoized.ty,
+                        });
+                    }
+                    Ok(MemoizedSchemaType {
+                        ty: Arc::new(SchemaType {
+                            name,
+                            fqn,
+                            docs,
+                            kind: SchemaTypeKind::Record(fields),
+                            layout,
+                        }),
+                        maximum_subtree_depth,
+                        expanded_nodes,
+                    })
+                }
+                TypeDefKind::Option(payload) => {
+                    let payload = self.build_type(payload, depth + 1)?;
+                    let maximum = 1usize
+                        .checked_add(payload.ty.layout.maximum)
+                        .ok_or_else(|| Error::new("option layout maximum width is too large"))?;
+                    let layout = FeltLayout::bounded(1, maximum)?;
+                    Ok(MemoizedSchemaType {
+                        maximum_subtree_depth: 1 + payload.maximum_subtree_depth,
+                        expanded_nodes: payload.expanded_nodes.saturating_add(1),
+                        ty: Arc::new(SchemaType {
+                            name,
+                            fqn,
+                            docs,
+                            kind: SchemaTypeKind::Option(payload.ty),
+                            layout,
+                        }),
+                    })
+                }
+                TypeDefKind::Variant(variant) => {
+                    let mut cases = Vec::with_capacity(variant.cases.len());
+                    let mut maximum_subtree_depth = 0;
+                    let mut expanded_nodes = 1usize;
+                    for case in variant.cases {
+                        let payload = match case.ty {
+                            Some(ty) => {
+                                let memoized = self.build_type(ty, depth + 1)?;
+                                maximum_subtree_depth =
+                                    maximum_subtree_depth.max(1 + memoized.maximum_subtree_depth);
+                                expanded_nodes =
+                                    expanded_nodes.saturating_add(memoized.expanded_nodes);
+                                Some(memoized.ty)
+                            }
+                            None => None,
+                        };
+                        cases.push(SchemaCase {
+                            name: case.name,
+                            docs: case.docs.contents,
+                            payload,
+                        });
+                    }
+                    let layout = variant_layout(&cases)?;
+                    Ok(MemoizedSchemaType {
+                        ty: Arc::new(SchemaType {
+                            name,
+                            fqn,
+                            docs,
+                            kind: SchemaTypeKind::Variant(cases),
+                            layout,
+                        }),
+                        maximum_subtree_depth,
+                        expanded_nodes,
+                    })
+                }
+                TypeDefKind::Enum(enum_) => {
+                    let cases = enum_
+                        .cases
+                        .into_iter()
+                        .map(|case| SchemaCase {
+                            name: case.name,
+                            docs: case.docs.contents,
+                            payload: None,
+                        })
+                        .collect::<Vec<_>>();
+                    let layout = variant_layout(&cases)?;
+                    Ok(MemoizedSchemaType {
+                        ty: Arc::new(SchemaType {
+                            name,
+                            fqn,
+                            docs,
+                            kind: SchemaTypeKind::Variant(cases),
+                            layout,
+                        }),
+                        maximum_subtree_depth: 0,
+                        expanded_nodes: 1,
+                    })
+                }
+                unsupported => Err(Error::new(format!(
+                    "WIT {} `{}` is not supported in note storage schemas",
+                    unsupported.as_str(),
+                    fqn.as_deref().or(name.as_deref()).unwrap_or("<anonymous>")
+                ))),
+            }
+        };
+        self.active.remove(&id);
+        if let Ok(memoized) = &result {
+            ensure_expanded_node_limit(&memoized.ty, memoized.expanded_nodes)?;
+            self.memo.insert(id, memoized.clone());
+        }
+        result
+    }
+
+    /// Resolves a primitive alias while preserving its name, FQN, and documentation.
+    ///
+    /// [`Self::build_type_id`] follows ID aliases before dispatching here.
+    fn build_named_alias(
+        &mut self,
+        ty: Type,
+        name: Option<String>,
+        fqn: Option<String>,
+        docs: Option<String>,
+    ) -> Result<MemoizedSchemaType> {
+        match ty {
+            Type::Id(_) => unreachable!("build_type_id must follow ID aliases first"),
+            Type::U64 => self.primitive(PrimitiveType::U64, name, fqn, docs),
+            Type::U32 => self.primitive(PrimitiveType::U32, name, fqn, docs),
+            Type::U8 => self.primitive(PrimitiveType::U8, name, fqn, docs),
+            Type::Bool => self.primitive(PrimitiveType::Bool, name, fqn, docs),
+            unsupported => Err(Error::new(format!(
+                "WIT primitive alias `{unsupported:?}` is not supported in note storage schemas"
+            ))),
+        }
+    }
+
+    /// Creates a supported primitive type.
+    fn primitive(
+        &self,
+        primitive: PrimitiveType,
+        name: Option<String>,
+        fqn: Option<String>,
+        docs: Option<String>,
+    ) -> Result<MemoizedSchemaType> {
+        let width = match primitive {
+            PrimitiveType::U64 => 2,
+            PrimitiveType::U32 | PrimitiveType::U8 | PrimitiveType::Bool => 1,
+        };
+        Ok(MemoizedSchemaType {
+            ty: Arc::new(SchemaType {
+                name,
+                fqn,
+                docs,
+                kind: SchemaTypeKind::Primitive(primitive),
+                layout: FeltLayout::fixed(width),
+            }),
+            maximum_subtree_depth: 0,
+            expanded_nodes: 1,
+        })
+    }
+
+    /// Follows `type = id` aliases to their defining type.
+    fn follow_aliases(&self, mut id: TypeId) -> Result<TypeId> {
+        let mut visited = HashSet::new();
+        loop {
+            if !visited.insert(id) {
+                return Err(Error::new("cyclic WIT type aliases are not supported"));
+            }
+            match self.resolve.types[id].kind {
+                TypeDefKind::Type(Type::Id(next)) => id = next,
+                _ => return Ok(id),
+            }
+        }
+    }
+
+    /// Reconstructs the canonical FQN for a named interface type.
+    fn type_fqn(&self, id: TypeId) -> Result<Option<String>> {
+        let definition = &self.resolve.types[id];
+        let Some(type_name) = definition.name.as_deref() else {
+            return Ok(None);
+        };
+        let TypeOwner::Interface(interface_id) = definition.owner else {
+            return Err(Error::new(format!(
+                "named WIT type `{type_name}` is not owned by an interface"
+            )));
+        };
+        let interface = &self.resolve.interfaces[interface_id];
+        let interface_name = interface.name.as_deref().ok_or_else(|| {
+            Error::new(format!("type `{type_name}` belongs to an unnamed interface"))
+        })?;
+        let package_id = interface.package.ok_or_else(|| {
+            Error::new(format!("interface `{interface_name}` does not belong to a package"))
+        })?;
+        let package_name = &self.resolve.packages[package_id].name;
+        let mut fqn =
+            format!("{}:{}/{}", package_name.namespace, package_name.name, interface_name);
+        if let Some(version) = &package_name.version {
+            fqn.push('@');
+            fqn.push_str(&version.to_string());
+        }
+        fqn.push('.');
+        fqn.push_str(type_name);
+        Ok(Some(fqn))
+    }
+}
+
+/// Returns a variable layout for declaration-ordinal cases.
+fn variant_layout(cases: &[SchemaCase]) -> Result<FeltLayout> {
+    if cases.is_empty() {
+        return Err(Error::new("a note storage variant must define at least one case"));
+    }
+    let minimum_payload = cases
+        .iter()
+        .map(|case| case.payload.as_ref().map_or(0, |ty| ty.layout.minimum))
+        .min()
+        .unwrap_or(0);
+    let maximum_payload = cases
+        .iter()
+        .map(|case| case.payload.as_ref().map_or(0, |ty| ty.layout.maximum))
+        .max()
+        .unwrap_or(0);
+    let minimum = 1usize
+        .checked_add(minimum_payload)
+        .ok_or_else(|| Error::new("variant layout minimum width is too large"))?;
+    let maximum = 1usize
+        .checked_add(maximum_payload)
+        .ok_or_else(|| Error::new("variant layout maximum width is too large"))?;
+    FeltLayout::bounded(minimum, maximum)
+}
+
+/// Returns a stable name for a model kind.
+fn kind_name(kind: &SchemaTypeKind) -> &'static str {
+    match kind {
+        SchemaTypeKind::Felt => "felt",
+        SchemaTypeKind::Primitive(_) => "primitive",
+        SchemaTypeKind::Record(_) => "record",
+        SchemaTypeKind::Option(_) => "option",
+        SchemaTypeKind::Variant(_) => "variant",
+    }
+}
+
+/// Normalizes one WIT path segment from snake case to kebab case.
+pub(crate) fn normalize_name(name: &str) -> String {
+    name.trim().replace('_', "-")
+}
diff --git a/sdk/note-schema/src/section.rs b/sdk/note-schema/src/section.rs
new file mode 100644
index 0000000000..6d19177ab7
--- /dev/null
+++ b/sdk/note-schema/src/section.rs
@@ -0,0 +1,21 @@
+//! Package custom-section access.
+
+use miden_mast_package::{Package, SectionId};
+
+use crate::{Error, Result};
+
+/// Returns the only package section with `section_name`.
+pub(crate) fn unique_package_section<'a>(
+    package: &'a Package,
+    section_id: SectionId,
+    section_name: &str,
+) -> Result<&'a [u8]> {
+    let mut matches = package.sections.iter().filter(|section| section.id == section_id);
+    let section = matches.next().ok_or_else(|| {
+        Error::new(format!("package does not contain the `{section_name}` section"))
+    })?;
+    if matches.next().is_some() {
+        return Err(Error::new(format!("package contains more than one `{section_name}` section")));
+    }
+    Ok(section.data.as_ref())
+}
diff --git a/sdk/note-schema/src/tests.rs b/sdk/note-schema/src/tests.rs
new file mode 100644
index 0000000000..f56bbab12c
--- /dev/null
+++ b/sdk/note-schema/src/tests.rs
@@ -0,0 +1,586 @@
+//! Unit tests for schema interpretation, building, and decoding.
+
+use miden_field_repr::ToFeltRepr;
+use miden_protocol::{account::AccountId, address::NetworkId};
+
+use crate::{
+    ACCOUNT_ID_FQN, CodecRegistry, DecodedValueKind, Felt, MAX_NOTE_STORAGE_SCHEMA_BYTES,
+    MAX_NOTE_STORAGE_SCHEMA_DEPTH, MAX_NOTE_STORAGE_SCHEMA_FELTS, MAX_NOTE_STORAGE_SCHEMA_NODES,
+    MAX_NOTE_STORAGE_SCHEMA_TYPES, NoteStorage, NoteStorageSchema, SchemaTypeKind,
+};
+
+const LAYOUT_SCHEMA: &str = r#"
+package example:layout-schema@1.2.3;
+
+use miden:base/core-types@1.0.0;
+
+interface note-storage {
+    use core-types.{account-id, felt};
+
+    record nested-values {
+        /// A wide counter.
+        wide-count: u64,
+        small-count: u8,
+    }
+
+    variant selection {
+        empty,
+        count(u32),
+    }
+
+    record layout-note {
+        bedrock: felt,
+        nested: nested-values,
+        maybe-enabled: option<bool>,
+        selected: selection,
+        target-account-id: account-id,
+    }
+
+    type storage = layout-note;
+}
+
+package miden:base@1.0.0 {
+    interface core-types {
+        record felt {
+            inner: f32,
+        }
+
+        record account-id {
+            prefix: felt,
+            suffix: felt,
+        }
+    }
+}
+"#;
+
+const NESTED_CONSTRUCTOR_SCHEMA: &str = r#"
+package example:nested-constructors@1.0.0;
+
+interface note-storage {
+    record payload {
+        value: u64,
+    }
+
+    variant selection {
+        empty,
+        nested(payload),
+    }
+
+    record constructor-note {
+        maybe-payload: option<payload>,
+        selected: selection,
+    }
+
+    type storage = constructor-note;
+}
+"#;
+
+/// Returns a valid account ID and its mainnet bech32 form.
+fn account_id() -> (AccountId, String) {
+    let account_id = AccountId::try_from(0xaa00_0000_0000_bc11_0000_bc00_0000_de00u128).unwrap();
+    let bech32 = account_id.to_bech32(NetworkId::Mainnet);
+    (account_id, bech32)
+}
+
+#[test]
+fn resolves_alias_fqns_docs_and_structural_widths() {
+    let schema = NoteStorageSchema::from_wit_text(LAYOUT_SCHEMA).unwrap();
+
+    assert_eq!(
+        schema.root().fqn(),
+        Some("example:layout-schema/note-storage@1.2.3.layout-note")
+    );
+    assert_eq!(schema.layout().minimum(), 8);
+    assert_eq!(schema.layout().maximum(), 10);
+    assert_eq!(schema.layout().fixed_width(), None);
+
+    let SchemaTypeKind::Record(root_fields) = schema.root().kind() else {
+        panic!("storage root must be a record");
+    };
+    let nested = root_fields.iter().find(|field| field.name() == "nested").unwrap();
+    let SchemaTypeKind::Record(nested_fields) = nested.ty().kind() else {
+        panic!("nested must be a record");
+    };
+    assert_eq!(nested_fields[0].docs(), Some("A wide counter."));
+
+    let account_id = root_fields.iter().find(|field| field.name() == "target-account-id").unwrap();
+    assert_eq!(account_id.ty().fqn(), Some(ACCOUNT_ID_FQN));
+    assert_eq!(account_id.ty().layout().fixed_width(), Some(2));
+}
+
+#[test]
+fn wit_reader_reports_missing_schema_surface() {
+    let error = NoteStorageSchema::from_wit_text(
+        "package example:missing@1.0.0; interface other { record value {} }",
+    )
+    .err()
+    .unwrap()
+    .to_string();
+
+    assert!(error.contains("does not define the `note-storage` interface"));
+}
+
+#[test]
+fn reader_rejects_noncanonical_native_core_type_shapes() {
+    for (type_name, definitions) in [
+        ("felt", "record felt { inner: u32 }"),
+        ("word", "record felt { inner: f32 } record word { a: felt, b: felt, c: felt }"),
+        (
+            "account-id",
+            "record felt { inner: f32 } record account-id { suffix: felt, prefix: felt }",
+        ),
+        ("asset-amount", "record felt { inner: f32 } record asset-amount { inner: u64 }"),
+    ] {
+        let wit = format!(
+            r#"
+package example:bad-core-shape@1.0.0;
+
+use miden:base/core-types@1.0.0;
+
+interface note-storage {{
+    use core-types.{{{type_name}}};
+    record bad-note {{ value: {type_name} }}
+    type storage = bad-note;
+}}
+
+package miden:base@1.0.0 {{
+    interface core-types {{ {definitions} }}
+}}
+"#
+        );
+        let error = NoteStorageSchema::from_wit_text(&wit).err().unwrap().to_string();
+        assert!(
+            error.contains(&format!("miden:base/core-types@1.0.0.{type_name}")),
+            "unexpected error for {type_name}: {error}"
+        );
+        assert!(error.contains("pinned canonical shape"));
+    }
+}
+
+#[test]
+fn builder_normalizes_paths_and_uses_declaration_order() {
+    let schema = NoteStorageSchema::from_wit_text(LAYOUT_SCHEMA).unwrap();
+    let (account_id, bech32) = account_id();
+    let storage = schema
+        .builder()
+        .set("bedrock", "5")
+        .unwrap()
+        .set("nested.wide_count", "4294967298")
+        .unwrap()
+        .set("nested.small-count", "7")
+        .unwrap()
+        .set("maybe_enabled", "some(true)")
+        .unwrap()
+        .set("selected", "count(9)")
+        .unwrap()
+        .set("target_account_id", &bech32)
+        .unwrap()
+        .build()
+        .unwrap();
+
+    let expected = NoteStorage::new(vec![
+        Felt::from_u32(5),
+        Felt::from_u32(2),
+        Felt::from_u32(1),
+        Felt::from_u32(7),
+        Felt::ONE,
+        Felt::ONE,
+        Felt::ONE,
+        Felt::from_u32(9),
+        account_id.prefix().as_felt(),
+        account_id.suffix(),
+    ])
+    .unwrap();
+    assert_eq!(storage, expected);
+
+    let decoded = schema.decode(&storage).unwrap();
+    assert_eq!(
+        decoded.field("nested").unwrap().field("wide_count").unwrap().to_string(),
+        "4294967298"
+    );
+    assert_eq!(decoded.field("maybe_enabled").unwrap().to_string(), "some(true)");
+    assert_eq!(decoded.field("selected").unwrap().to_string(), "count(9)");
+    assert_eq!(decoded.field("target_account_id").unwrap().to_string(), bech32);
+}
+
+#[test]
+fn decoder_uses_structural_fallback_without_a_codec() {
+    let schema = NoteStorageSchema::from_wit_text(LAYOUT_SCHEMA).unwrap();
+    let (account_id, bech32) = account_id();
+    let storage = schema
+        .builder()
+        .set("bedrock", "5")
+        .unwrap()
+        .set("nested.wide-count", "0")
+        .unwrap()
+        .set("nested.small-count", "0")
+        .unwrap()
+        .set("maybe-enabled", "none")
+        .unwrap()
+        .set("selected", "empty")
+        .unwrap()
+        .set("target-account-id", &bech32)
+        .unwrap()
+        .build()
+        .unwrap();
+
+    let decoded = schema.decode_with_registry(&storage, &CodecRegistry::empty()).unwrap();
+    let account = decoded.field("target-account-id").unwrap();
+    let DecodedValueKind::Record(fields) = account.kind() else {
+        panic!("account-id must use its structural record fallback");
+    };
+    assert_eq!(fields[0].name(), Some("prefix"));
+    assert_eq!(fields[0].to_string(), account_id.prefix().as_u64().to_string());
+    assert_eq!(fields[1].name(), Some("suffix"));
+    assert_eq!(fields[1].to_string(), account_id.suffix().as_canonical_u64().to_string());
+}
+
+#[test]
+fn builder_validates_codec_records_assembled_from_child_paths() {
+    let schema = NoteStorageSchema::from_wit_text(LAYOUT_SCHEMA).unwrap();
+    let (account_id, _) = account_id();
+
+    // Child-path values that form no valid account id must fail the codec, not encode raw.
+    let error = schema
+        .builder()
+        .set("bedrock", "5")
+        .unwrap()
+        .set("nested.wide_count", "1")
+        .unwrap()
+        .set("nested.small-count", "1")
+        .unwrap()
+        .set("maybe_enabled", "none")
+        .unwrap()
+        .set("selected", "count(1)")
+        .unwrap()
+        .set("target_account_id.prefix", "1")
+        .unwrap()
+        .set("target_account_id.suffix", "1")
+        .unwrap()
+        .build()
+        .err()
+        .unwrap()
+        .to_string();
+    assert!(error.contains("validation failed"), "unexpected error: {error}");
+    assert!(error.contains("target-account-id"), "the path is not named: {error}");
+
+    // Valid child-path values pass the codec and encode like the whole-value assignment.
+    let storage = schema
+        .builder()
+        .set("bedrock", "5")
+        .unwrap()
+        .set("nested.wide_count", "1")
+        .unwrap()
+        .set("nested.small-count", "1")
+        .unwrap()
+        .set("maybe_enabled", "none")
+        .unwrap()
+        .set("selected", "count(1)")
+        .unwrap()
+        .set(
+            "target_account_id.prefix",
+            account_id.prefix().as_felt().as_canonical_u64().to_string(),
+        )
+        .unwrap()
+        .set("target_account_id.suffix", account_id.suffix().as_canonical_u64().to_string())
+        .unwrap()
+        .build()
+        .unwrap();
+    let felts = storage.to_elements();
+    assert_eq!(felts[felts.len() - 2], account_id.prefix().as_felt());
+    assert_eq!(felts[felts.len() - 1], account_id.suffix());
+}
+
+#[test]
+fn builder_reports_missing_unknown_conflicting_and_range_errors() {
+    let schema = NoteStorageSchema::from_wit_text(LAYOUT_SCHEMA).unwrap();
+    let (_, bech32) = account_id();
+
+    let missing = schema.builder().build().unwrap_err().to_string();
+    assert!(missing.contains("missing note storage value for `bedrock`"));
+
+    let unknown = schema.builder().set("nested.unknown", "1").err().unwrap().to_string();
+    assert!(unknown.contains("has no field named `unknown`"));
+
+    let conflict = schema
+        .builder()
+        .set("nested", "value")
+        .unwrap()
+        .set("nested.wide-count", "1")
+        .err()
+        .unwrap()
+        .to_string();
+    assert!(conflict.contains("conflicts"));
+
+    let range = schema
+        .builder()
+        .set("bedrock", "0")
+        .unwrap()
+        .set("nested.wide-count", "0")
+        .unwrap()
+        .set("nested.small-count", "256")
+        .unwrap()
+        .set("maybe-enabled", "none")
+        .unwrap()
+        .set("selected", "empty")
+        .unwrap()
+        .set("target-account-id", &bech32)
+        .unwrap()
+        .build()
+        .unwrap_err()
+        .to_string();
+    assert!(range.contains("u8 value `256` is out of range"));
+}
+
+#[test]
+fn builder_rejects_nested_record_constructor_paths() {
+    let schema = NoteStorageSchema::from_wit_text(NESTED_CONSTRUCTOR_SCHEMA).unwrap();
+
+    let option_error =
+        schema.builder().set("maybe_payload", "some(value)").err().unwrap().to_string();
+    assert!(option_error.contains("path `maybe-payload`"));
+    assert!(option_error.contains("option with record payload"));
+    assert!(option_error.contains("does not support nested record constructors"));
+
+    let variant_error =
+        schema.builder().set("selected", "nested(value)").err().unwrap().to_string();
+    assert!(variant_error.contains("path `selected`"));
+    assert!(variant_error.contains("variant case `nested` with a record payload"));
+    assert!(variant_error.contains("does not support nested record constructors"));
+}
+
+#[test]
+fn decoder_rejects_invalid_option_and_variant_tags() {
+    let schema = NoteStorageSchema::from_wit_text(LAYOUT_SCHEMA).unwrap();
+    let (account_id, _) = account_id();
+    let suffix = [account_id.prefix().as_felt(), account_id.suffix()];
+
+    let invalid_option = NoteStorage::new(
+        [
+            vec![Felt::ZERO, Felt::ZERO, Felt::ZERO, Felt::ZERO, Felt::from_u32(2)],
+            vec![Felt::ZERO],
+            suffix.to_vec(),
+        ]
+        .concat(),
+    )
+    .unwrap();
+    assert!(
+        schema
+            .decode(&invalid_option)
+            .unwrap_err()
+            .to_string()
+            .contains("invalid option tag")
+    );
+
+    let invalid_variant = NoteStorage::new(
+        [
+            vec![Felt::ZERO, Felt::ZERO, Felt::ZERO, Felt::ZERO, Felt::ZERO],
+            vec![Felt::from_u32(2)],
+            suffix.to_vec(),
+        ]
+        .concat(),
+    )
+    .unwrap();
+    assert!(
+        schema
+            .decode(&invalid_variant)
+            .unwrap_err()
+            .to_string()
+            .contains("invalid variant tag 2")
+    );
+}
+
+#[test]
+fn u64_layout_uses_shared_low_then_high_limb_encoding() {
+    let value = 0x1234_5678_90ab_cdefu64;
+    assert_eq!(value.to_felt_repr(), [Felt::from_u32(0x90ab_cdef), Felt::from_u32(0x1234_5678)]);
+}
+
+#[test]
+fn repeated_pair_schema_is_memoized_and_fails_fast_at_width_limit() {
+    let schema = NoteStorageSchema::from_wit_text(&repeated_pair_schema(8)).unwrap();
+    let SchemaTypeKind::Record(fields) = schema.root().kind() else {
+        panic!("the repeated-pair root must be a record");
+    };
+    assert!(
+        core::ptr::eq(fields[0].ty(), fields[1].ty()),
+        "both references to the completed named type must share one memoized node"
+    );
+
+    let error =
+        NoteStorageSchema::from_wit_text(&repeated_pair_schema(MAX_NOTE_STORAGE_SCHEMA_DEPTH / 2))
+            .err()
+            .expect("an over-wide repeated-pair schema must fail")
+            .to_string();
+    assert!(error.contains("maximum width"), "unexpected repeated-pair error: {error}");
+    assert!(
+        error.contains(&MAX_NOTE_STORAGE_SCHEMA_FELTS.to_string()),
+        "the protocol width must be present in the diagnostic: {error}"
+    );
+}
+
+#[test]
+fn deep_schema_chain_fails_fast_at_depth_limit() {
+    let error =
+        NoteStorageSchema::from_wit_text(&deep_chain_schema(MAX_NOTE_STORAGE_SCHEMA_DEPTH + 1))
+            .err()
+            .expect("an over-deep schema must fail")
+            .to_string();
+
+    assert!(error.contains("nesting depth"), "unexpected deep-chain error: {error}");
+    assert!(
+        error.contains(&MAX_NOTE_STORAGE_SCHEMA_DEPTH.to_string()),
+        "the nesting limit must be present in the diagnostic: {error}"
+    );
+}
+
+#[test]
+fn memoized_subtree_reuse_still_enforces_the_depth_limit() {
+    let error = NoteStorageSchema::from_wit_text(&memoized_reuse_depth_schema())
+        .err()
+        .expect("deep reuse of a memoized subtree must fail")
+        .to_string();
+
+    assert!(error.contains("nesting depth"), "unexpected memoized-depth error: {error}");
+    assert!(
+        error.contains(&MAX_NOTE_STORAGE_SCHEMA_DEPTH.to_string()),
+        "the nesting limit must be present in the diagnostic: {error}"
+    );
+}
+
+#[test]
+fn zero_width_record_doubling_fails_at_the_expanded_node_limit() {
+    let error = NoteStorageSchema::from_wit_text(&empty_pair_schema(40))
+        .err()
+        .expect("a doubling chain of empty records must fail")
+        .to_string();
+
+    assert!(error.contains("expands to"), "unexpected expanded-node error: {error}");
+    assert!(
+        error.contains(&MAX_NOTE_STORAGE_SCHEMA_NODES.to_string()),
+        "the node limit must be present in the diagnostic: {error}"
+    );
+    // Level `n` of the chain expands to `2^(n + 1) - 1` nodes, so the first rejected level is the
+    // first one above the budget. The count in the message pins the counting rule.
+    let first_rejected = (1..)
+        .map(|level: u32| (1usize << (level + 1)) - 1)
+        .find(|nodes| *nodes > MAX_NOTE_STORAGE_SCHEMA_NODES)
+        .expect("the doubling chain crosses the node limit");
+    assert!(
+        error.contains(&first_rejected.to_string()),
+        "the expanded node count must be present in the diagnostic: {error}"
+    );
+}
+
+#[test]
+fn nested_records_below_the_expanded_node_limit_still_resolve() {
+    let levels = 11;
+    let schema = NoteStorageSchema::from_wit_text(&empty_pair_schema(levels))
+        .expect("a doubling chain below the node limit must resolve");
+    assert!(
+        (1usize << (levels + 1)) - 1 <= MAX_NOTE_STORAGE_SCHEMA_NODES,
+        "the chain must stay below the node budget"
+    );
+    assert_eq!(schema.layout().maximum(), 0, "empty records have no felts");
+
+    NoteStorageSchema::from_wit_text(LAYOUT_SCHEMA)
+        .expect("the layout schema stays below the node limit");
+}
+
+#[test]
+fn schema_reader_enforces_documented_byte_type_and_root_width_limits() {
+    let oversized = " ".repeat(MAX_NOTE_STORAGE_SCHEMA_BYTES + 1);
+    let byte_error = NoteStorageSchema::from_wit_text(&oversized)
+        .err()
+        .expect("an oversized schema document must fail")
+        .to_string();
+    assert!(byte_error.contains("schema section"));
+    assert!(byte_error.contains(&MAX_NOTE_STORAGE_SCHEMA_BYTES.to_string()));
+
+    let mut too_many_types =
+        String::from("package example:many-types@1.0.0; interface note-storage { ");
+    for index in 0..=MAX_NOTE_STORAGE_SCHEMA_TYPES {
+        too_many_types.push_str(&format!("type t{index} = u8; "));
+    }
+    too_many_types.push_str("record root { value: u8 } type storage = root; }");
+    let type_error = NoteStorageSchema::from_wit_text(&too_many_types)
+        .err()
+        .expect("a schema with too many types must fail")
+        .to_string();
+    assert!(type_error.contains("WIT types"), "unexpected type-count error: {type_error}");
+    assert!(type_error.contains(&MAX_NOTE_STORAGE_SCHEMA_TYPES.to_string()));
+
+    let mut wide_root =
+        String::from("package example:wide-root@1.0.0; interface note-storage { record root { ");
+    for index in 0..=MAX_NOTE_STORAGE_SCHEMA_FELTS {
+        wide_root.push_str(&format!("field-{index}: u8, "));
+    }
+    wide_root.push_str("} type storage = root; }");
+    let width_error = NoteStorageSchema::from_wit_text(&wide_root)
+        .err()
+        .expect("an over-wide schema root must fail")
+        .to_string();
+    assert!(width_error.contains("maximum width"), "unexpected width error: {width_error}");
+    assert!(width_error.contains(&MAX_NOTE_STORAGE_SCHEMA_FELTS.to_string()));
+}
+
+/// Builds a linear-size WIT DAG of zero-felt records whose expanded tree doubles at each level.
+fn empty_pair_schema(levels: usize) -> String {
+    let mut wit =
+        String::from("package example:empty-pair@1.0.0; interface note-storage { record t0 { } ");
+    for level in 1..=levels {
+        let previous = level - 1;
+        wit.push_str(&format!("record t{level} {{ left: t{previous}, right: t{previous} }} "));
+    }
+    wit.push_str(&format!("type storage = t{levels}; }}"));
+    wit
+}
+
+/// Builds a linear-size WIT DAG whose resolved layout doubles at each level.
+fn repeated_pair_schema(levels: usize) -> String {
+    let mut wit = String::from(
+        "package example:repeated-pair@1.0.0; interface note-storage { record t0 { value: u8 } ",
+    );
+    for level in 1..=levels {
+        let previous = level - 1;
+        wit.push_str(&format!("record t{level} {{ left: t{previous}, right: t{previous} }} "));
+    }
+    wit.push_str(&format!("type storage = t{levels}; }}"));
+    wit
+}
+
+/// Builds a WIT record chain with one nested named type per level.
+fn deep_chain_schema(levels: usize) -> String {
+    let mut wit = String::from(
+        "package example:deep-chain@1.0.0; interface note-storage { record t0 { value: u8 } ",
+    );
+    for level in 1..=levels {
+        let previous = level - 1;
+        wit.push_str(&format!("record t{level} {{ value: t{previous} }} "));
+    }
+    wit.push_str(&format!("type storage = t{levels}; }}"));
+    wit
+}
+
+/// Builds two individually valid chains whose composition exceeds the depth limit only on reuse.
+fn memoized_reuse_depth_schema() -> String {
+    let levels = MAX_NOTE_STORAGE_SCHEMA_DEPTH / 2;
+    let mut wit = String::from(
+        "package example:memoized-depth@1.0.0; interface note-storage { record shared0 { value: \
+         u8 } ",
+    );
+    for level in 1..=levels {
+        let previous = level - 1;
+        wit.push_str(&format!("record shared{level} {{ value: shared{previous} }} "));
+    }
+    wit.push_str(&format!("record wrapper0 {{ value: shared{levels} }} "));
+    for level in 1..=levels {
+        let previous = level - 1;
+        wit.push_str(&format!("record wrapper{level} {{ value: wrapper{previous} }} "));
+    }
+    wit.push_str(&format!(
+        "record root {{ cached: shared{levels}, too-deep: wrapper{levels} }} type storage = root; \
+         }}"
+    ));
+    wit
+}
diff --git a/sdk/note-schema/src/value.rs b/sdk/note-schema/src/value.rs
new file mode 100644
index 0000000000..5b8b084b2c
--- /dev/null
+++ b/sdk/note-schema/src/value.rs
@@ -0,0 +1,285 @@
+//! Named values decoded from note storage.
+
+use core::fmt;
+
+use miden_field_repr::{FeltReader, FromFeltRepr};
+
+use crate::{
+    CodecRegistry, Error, Felt, NoteStorage, PrimitiveType, Result, SchemaType, SchemaTypeKind,
+    schema::normalize_name,
+};
+
+/// A named value decoded from note storage.
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct DecodedValue {
+    name: Option<String>,
+    docs: Option<String>,
+    fqn: Option<String>,
+    kind: DecodedValueKind,
+}
+
+impl DecodedValue {
+    /// Returns the field or root type name.
+    pub fn name(&self) -> Option<&str> {
+        self.name.as_deref()
+    }
+
+    /// Returns the field-level or root type documentation.
+    pub fn docs(&self) -> Option<&str> {
+        self.docs.as_deref()
+    }
+
+    /// Returns the canonical WIT FQN when this value has one.
+    pub fn fqn(&self) -> Option<&str> {
+        self.fqn.as_deref()
+    }
+
+    /// Returns the decoded value kind.
+    pub const fn kind(&self) -> &DecodedValueKind {
+        &self.kind
+    }
+
+    /// Finds a direct record field with kebab-case or snake_case spelling.
+    pub fn field(&self, name: &str) -> Option<&Self> {
+        let DecodedValueKind::Record(fields) = &self.kind else {
+            return None;
+        };
+        let name = normalize_name(name);
+        fields.iter().find(|field| field.name.as_deref() == Some(name.as_str()))
+    }
+}
+
+/// The structural value stored in a decoded node.
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum DecodedValueKind {
+    /// A codec-rendered or primitive leaf with its encoded felts.
+    Leaf {
+        /// The structural felt representation.
+        felts: Vec<Felt>,
+        /// The registry-backed or primitive display text.
+        display: String,
+    },
+    /// Record fields in declaration order.
+    Record(Vec<DecodedValue>),
+    /// An optional value.
+    Option(Option<Box<DecodedValue>>),
+    /// A selected variant case and its optional payload.
+    Variant {
+        /// The selected case name.
+        case: String,
+        /// The decoded case payload.
+        value: Option<Box<DecodedValue>>,
+    },
+}
+
+impl fmt::Display for DecodedValue {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match &self.kind {
+            DecodedValueKind::Leaf { display, .. } => f.write_str(display),
+            DecodedValueKind::Record(fields) => {
+                f.write_str("{")?;
+                for (index, field) in fields.iter().enumerate() {
+                    if index != 0 {
+                        f.write_str(", ")?;
+                    }
+                    f.write_str(field.name.as_deref().unwrap_or("<unnamed>"))?;
+                    f.write_str(": ")?;
+                    field.fmt(f)?;
+                }
+                f.write_str("}")
+            }
+            DecodedValueKind::Option(None) => f.write_str("none"),
+            DecodedValueKind::Option(Some(value)) => write!(f, "some({value})"),
+            DecodedValueKind::Variant { case, value: None } => f.write_str(case),
+            DecodedValueKind::Variant {
+                case,
+                value: Some(value),
+            } => write!(f, "{case}({value})"),
+        }
+    }
+}
+
+/// Decodes a root storage value and rejects trailing felts.
+pub(crate) fn decode(
+    root: &SchemaType,
+    storage: &NoteStorage,
+    registry: &CodecRegistry,
+) -> Result<DecodedValue> {
+    let (value, consumed) = decode_type(
+        root,
+        storage.items(),
+        Some(registry),
+        root.name().map(str::to_owned),
+        root.docs().map(str::to_owned),
+    )?;
+    if consumed != storage.items().len() {
+        return Err(Error::new(format!(
+            "note storage has {} trailing felt(s) after the schema root",
+            storage.items().len() - consumed
+        )));
+    }
+    Ok(value)
+}
+
+/// Validates one complete structural encoding without applying codecs.
+pub(crate) fn validate_encoding(ty: &SchemaType, felts: &[Felt]) -> Result<()> {
+    let (_, consumed) = decode_type(ty, felts, None, None, None)?;
+    if consumed != felts.len() {
+        return Err(Error::new(format!(
+            "value has {} trailing felt(s) after its structural encoding",
+            felts.len() - consumed
+        )));
+    }
+    Ok(())
+}
+
+/// Decodes one value prefix and returns the consumed felt count.
+fn decode_type(
+    ty: &SchemaType,
+    input: &[Felt],
+    registry: Option<&CodecRegistry>,
+    name: Option<String>,
+    docs: Option<String>,
+) -> Result<(DecodedValue, usize)> {
+    if let (Some(registry), Some(fqn)) = (registry, ty.fqn())
+        && let Some(codec) = registry.codec(fqn)
+    {
+        let (_, consumed) = decode_type(ty, input, None, None, None)?;
+        let felts = input[..consumed].to_vec();
+        codec
+            .validate(&felts)
+            .map_err(|err| err.context(format!("codec `{fqn}` rejected decoded value")))?;
+        let display = codec
+            .display(&felts)
+            .map_err(|err| err.context(format!("codec `{fqn}` failed to display decoded value")))?;
+        return Ok((
+            DecodedValue {
+                name,
+                docs,
+                fqn: Some(fqn.to_owned()),
+                kind: DecodedValueKind::Leaf { display, felts },
+            },
+            consumed,
+        ));
+    }
+
+    let fqn = ty.fqn().map(str::to_owned);
+    let (kind, consumed) = match ty.kind() {
+        SchemaTypeKind::Felt => {
+            let mut reader = FeltReader::new(input);
+            let felt = reader
+                .read()
+                .map_err(|err| Error::new(format!("invalid felt representation: {err}")))?;
+            (
+                DecodedValueKind::Leaf {
+                    felts: vec![felt],
+                    display: felt.as_canonical_u64().to_string(),
+                },
+                reader.pos(),
+            )
+        }
+        SchemaTypeKind::Primitive(primitive) => decode_primitive(*primitive, input)?,
+        SchemaTypeKind::Record(fields) => {
+            let mut decoded = Vec::with_capacity(fields.len());
+            let mut offset = 0usize;
+            for field in fields {
+                let (value, consumed) = decode_type(
+                    field.ty(),
+                    &input[offset..],
+                    registry,
+                    Some(field.name().to_owned()),
+                    field.docs().map(str::to_owned),
+                )
+                .map_err(|err| err.context(format!("field `{}`", field.name())))?;
+                offset = offset
+                    .checked_add(consumed)
+                    .ok_or_else(|| Error::new("decoded record width is too large"))?;
+                decoded.push(value);
+            }
+            (DecodedValueKind::Record(decoded), offset)
+        }
+        SchemaTypeKind::Option(payload) => {
+            let mut reader = FeltReader::new(input);
+            let tag = reader
+                .read()
+                .map_err(|err| Error::new(format!("invalid option representation: {err}")))?
+                .as_canonical_u64();
+            match tag {
+                0 => (DecodedValueKind::Option(None), reader.pos()),
+                1 => {
+                    let (value, consumed) =
+                        decode_type(payload, &input[reader.pos()..], registry, None, None)?;
+                    (DecodedValueKind::Option(Some(Box::new(value))), reader.pos() + consumed)
+                }
+                tag => {
+                    return Err(Error::new(format!("invalid option tag {tag}; expected 0 or 1")));
+                }
+            }
+        }
+        SchemaTypeKind::Variant(cases) => {
+            let mut reader = FeltReader::new(input);
+            let tag = reader
+                .read_u32()
+                .map_err(|err| Error::new(format!("invalid variant representation: {err}")))?
+                as usize;
+            let case = cases.get(tag).ok_or_else(|| {
+                Error::new(format!(
+                    "invalid variant tag {tag}; expected a declaration ordinal below {}",
+                    cases.len()
+                ))
+            })?;
+            let (value, consumed) = match case.payload() {
+                Some(payload) => {
+                    let (value, consumed) =
+                        decode_type(payload, &input[reader.pos()..], registry, None, None)?;
+                    (Some(Box::new(value)), reader.pos() + consumed)
+                }
+                None => (None, reader.pos()),
+            };
+            (
+                DecodedValueKind::Variant {
+                    case: case.name().to_owned(),
+                    value,
+                },
+                consumed,
+            )
+        }
+    };
+
+    Ok((
+        DecodedValue {
+            name,
+            docs,
+            fqn,
+            kind,
+        },
+        consumed,
+    ))
+}
+
+/// Decodes a supported primitive through `miden-field-repr`.
+fn decode_primitive(primitive: PrimitiveType, input: &[Felt]) -> Result<(DecodedValueKind, usize)> {
+    match primitive {
+        PrimitiveType::U64 => read_primitive::<u64>(input),
+        PrimitiveType::U32 => read_primitive::<u32>(input),
+        PrimitiveType::U8 => read_primitive::<u8>(input),
+        PrimitiveType::Bool => read_primitive::<bool>(input),
+    }
+}
+
+/// Decodes and displays one primitive value.
+fn read_primitive<T>(input: &[Felt]) -> Result<(DecodedValueKind, usize)>
+where
+    T: FromFeltRepr + fmt::Display,
+{
+    let mut reader = FeltReader::new(input);
+    let value = T::from_felt_repr(&mut reader)
+        .map_err(|err| Error::new(format!("invalid primitive representation: {err}")))?;
+    Ok((
+        DecodedValueKind::Leaf {
+            felts: input[..reader.pos()].to_vec(),
+            display: value.to_string(),
+        },
+        reader.pos(),
+    ))
+}
diff --git a/sdk/note-schema/tests/p2id_package.rs b/sdk/note-schema/tests/p2id_package.rs
new file mode 100644
index 0000000000..b49b2613e0
--- /dev/null
+++ b/sdk/note-schema/tests/p2id_package.rs
@@ -0,0 +1,28 @@
+//! End-to-end test for a schema embedded in the p2id note package.
+
+use miden_note_schema::{NoteStorage, NoteStorageSchema};
+use miden_protocol::{account::AccountId, address::NetworkId};
+use midenc_integration_test_support::{compile_project, workspace_root, write_masp_file_atomic};
+
+#[test]
+fn p2id_schema_builds_and_decodes_account_id_storage() {
+    let workspace = workspace_root();
+    let examples = workspace.join("examples");
+    let wallet_dir = examples.join("basic-wallet");
+    let wallet = compile_project(&wallet_dir);
+    write_masp_file_atomic(&wallet, wallet_dir.join("target/miden/release"))
+        .expect("failed to persist the basic-wallet dependency package");
+
+    let p2id = compile_project(&examples.join("p2id-note"));
+    let schema = NoteStorageSchema::from_package(&p2id).expect("p2id schema must resolve");
+    let account_id = AccountId::try_from(0xaa00_0000_0000_bc11_0000_bc00_0000_de00u128).unwrap();
+    let bech32 = account_id.to_bech32(NetworkId::Mainnet);
+
+    let built = schema.builder().set("target-account-id", &bech32).unwrap().build().unwrap();
+    let expected =
+        NoteStorage::new(vec![account_id.prefix().as_felt(), account_id.suffix()]).unwrap();
+    assert_eq!(built, expected);
+
+    let decoded = schema.decode(&built).unwrap();
+    assert_eq!(decoded.field("target_account_id").unwrap().to_string(), bech32);
+}
diff --git a/sdk/note-schema/wit/note-codec.wit b/sdk/note-schema/wit/note-codec.wit
new file mode 100644
index 0000000000..950aa77cb9
--- /dev/null
+++ b/sdk/note-schema/wit/note-codec.wit
@@ -0,0 +1,28 @@
+// Mirror note: the wit-crate file is canonical; sdk/note-schema/wit/note-codec.wit exists because
+// Wasmtime bindgen!(path:) needs package-local WIT, and an equality test guards both files.
+package miden:note-codec@1.0.0;
+
+/// Parses, displays, and validates custom note storage types.
+interface codec {
+    /// A canonical Miden field element at the component boundary.
+    ///
+    /// This is a `u64`, not the core-types `felt` record, because that record models the
+    /// compiler's guest felt value and does not expose its canonical integer representation.
+    type felt = u64;
+
+    /// Returns the fully-qualified WIT names handled by this component.
+    supported-types: func() -> list<string>;
+
+    /// Parses text into a type's structural felt representation.
+    parse: func(type-fqn: string, value: string) -> result<list<felt>, string>;
+
+    /// Displays a type's structural felt representation.
+    display: func(type-fqn: string, value: list<felt>) -> result<string, string>;
+
+    /// Validates a type's structural felt representation.
+    validate: func(type-fqn: string, value: list<felt>) -> result<_, string>;
+}
+
+world note-codec {
+    export codec;
+}
diff --git a/sdk/sdk/.cargo/config.toml b/sdk/sdk/.cargo/config.toml
new file mode 100644
index 0000000000..7fe3f77d7f
--- /dev/null
+++ b/sdk/sdk/.cargo/config.toml
@@ -0,0 +1,3 @@
+# Per-crate copy: per-member check-each builds run in this directory and default to the Miden Wasm target (a no-op for proc-macro roots, which always build for the host). sdk/ has no directory-wide config so host-side crates build natively.
+[build]
+target = "wasm32-wasip1"
diff --git a/sdk/sdk/Cargo.toml b/sdk/sdk/Cargo.toml
index 507c22e273..ad674f3779 100644
--- a/sdk/sdk/Cargo.toml
+++ b/sdk/sdk/Cargo.toml
@@ -25,7 +25,7 @@ miden-base-sys.workspace = true
 miden-field-repr.workspace = true
 miden-field = { workspace = true, default-features = false }
 miden-tx-script-args = { workspace = true, features = ["miden-vm-guest"] }
-wit-bindgen = { version = "0.57", default-features = false, features = ["macros"] }
+wit-bindgen = { workspace = true }
 
 [features]
 default = []
diff --git a/sdk/sdk/MIGRATION.md b/sdk/sdk/MIGRATION.md
index b0709599a3..5c1734ac69 100644
--- a/sdk/sdk/MIGRATION.md
+++ b/sdk/sdk/MIGRATION.md
@@ -90,6 +90,19 @@ constructors can commit to the note script's MAST root. Rename any inherent item
 including methods, `#[note_constructor]` methods, associated constants, and items declared in a
 separate impl block.
 
+### Keep duplicate `#[export_type]` registrations nominally unique and shape-compatible
+
+Two different Rust types that map to the same WIT name are now a compile error, even when their
+record fields or enum cases are identical. Shape-identical duplicate registrations of the same Rust
+type remain allowed, while conflicting shapes do not. Previously, the last registration silently
+replaced the first. Rename one Rust type so it maps to a different WIT name.
+
+### `#[export_type]` reserves `__MIDEN_EXPORT_TYPE_SHAPE`
+
+The `#[export_type]` macro now emits an inherent public associated constant named
+`__MIDEN_EXPORT_TYPE_SHAPE` on the annotated type. Rename any user-defined associated item with
+that exact name.
+
 ### Contract crates gain a `build.rs` for IDE and plain-cargo builds
 
 New projects created by `cargo miden new` include a small `build.rs` in each contract crate and a
@@ -146,6 +159,58 @@ path. Two different projects that contain a contract crate with the same package
 version and share one `CARGO_TARGET_DIR` reuse each other's build-script output — including
 the staged package cache. Use per-checkout target directories for such layouts.
 
+### Keep one `#[note]` struct in each crate
+
+There can now be only one `#[note]` struct per linked artifact. Two note structs compiled before
+this change. Now the linker rejects the second struct because both structs define the
+`__MIDEN_NOTE_STORAGE_SCHEMA_UNIQUENESS_GUARD` symbol. The guard covers the whole link, so a note
+crate cannot depend on another note crate either.
+
+Keep one note struct in the current crate. Move each extra note struct and its implementation into
+a separate note crate, and do not depend on that crate from a note crate.
+
+### Rewrite tuple-note and `Vec` storage layouts
+
+`#[note]` now emits a WIT storage schema and therefore requires each stored value to have a stable,
+named position. Unit structs remain valid, but tuple structs must become named-field structs. Keep
+the fields in the same order to preserve the existing felt layout:
+
+```rust
+// before
+#[note]
+struct PaymentNote(AccountId, u64);
+
+// after
+#[note]
+struct PaymentNote {
+    target: AccountId,
+    amount: u64,
+}
+```
+
+Dynamic `Vec` fields have no fixed note-storage layout and are no longer accepted. Replace a vector
+with explicit fields. Use `Option` for fixed optional positions, or use a named `#[export_type]`
+record when the same fixed group is nested or reused:
+
+```rust
+// before
+#[note]
+struct ValuesNote {
+    values: Vec<Felt>,
+}
+
+// after
+#[note]
+struct ValuesNote {
+    first: Felt,
+    second: Option<Felt>,
+}
+```
+
+There is no direct replacement for an unbounded vector. Choose a fixed maximum represented by
+named and optional fields, or redesign the note so variable-sized data is committed outside its
+storage payload.
+
 ### Kernel scalars are typed instead of `Felt` (counts, block heights, nonces, attachments)
 
 Binding surfaces whose values are counts now return `u32`: `tx::get_num_input_notes`,
diff --git a/sdk/stdlib-sys/.cargo/config.toml b/sdk/stdlib-sys/.cargo/config.toml
new file mode 100644
index 0000000000..7fe3f77d7f
--- /dev/null
+++ b/sdk/stdlib-sys/.cargo/config.toml
@@ -0,0 +1,3 @@
+# Per-crate copy: per-member check-each builds run in this directory and default to the Miden Wasm target (a no-op for proc-macro roots, which always build for the host). sdk/ has no directory-wide config so host-side crates build natively.
+[build]
+target = "wasm32-wasip1"
diff --git a/sdk/tx-script-args/.cargo/config.toml b/sdk/tx-script-args/.cargo/config.toml
new file mode 100644
index 0000000000..7fe3f77d7f
--- /dev/null
+++ b/sdk/tx-script-args/.cargo/config.toml
@@ -0,0 +1,3 @@
+# Per-crate copy: per-member check-each builds run in this directory and default to the Miden Wasm target (a no-op for proc-macro roots, which always build for the host). sdk/ has no directory-wide config so host-side crates build natively.
+[build]
+target = "wasm32-wasip1"
diff --git a/sdk/wasm-metadata/.cargo/config.toml b/sdk/wasm-metadata/.cargo/config.toml
new file mode 100644
index 0000000000..7fe3f77d7f
--- /dev/null
+++ b/sdk/wasm-metadata/.cargo/config.toml
@@ -0,0 +1,3 @@
+# Per-crate copy: per-member check-each builds run in this directory and default to the Miden Wasm target (a no-op for proc-macro roots, which always build for the host). sdk/ has no directory-wide config so host-side crates build natively.
+[build]
+target = "wasm32-wasip1"
diff --git a/sdk/wasm-metadata/src/lib.rs b/sdk/wasm-metadata/src/lib.rs
index d002ac66e1..cba8795685 100644
--- a/sdk/wasm-metadata/src/lib.rs
+++ b/sdk/wasm-metadata/src/lib.rs
@@ -13,6 +13,15 @@ use alloc::{string::String, vec::Vec};
 
 use serde::{Deserialize, Serialize};
 
+/// Environment variables that must not leak into nested Cargo builds.
+pub const NESTED_CARGO_SCRUB_ENV: &[&str] = &[
+    "CARGO_BUILD_RUSTFLAGS",
+    "CARGO_BUILD_TARGET",
+    "CARGO_ENCODED_RUSTFLAGS",
+    "CARGO_TARGET_WASM32_WASIP2_RUSTFLAGS",
+    "RUSTFLAGS",
+];
+
 /// Name of the Wasm custom section used to store frontend metadata bytes.
 pub const WASM_FRONTEND_METADATA_CUSTOM_SECTION_NAME: &str =
     "rodata,miden_account_component_frontend";
@@ -35,13 +44,55 @@ pub fn package_wit_section_id() -> miden_mast_package::SectionId {
         .expect("the WIT section id must be a valid custom section id")
 }
 
+/// Name of the Wasm custom section that stores a note storage schema.
+pub const WASM_NOTE_STORAGE_SCHEMA_CUSTOM_SECTION_NAME: &str = "rodata,miden_note_schema";
+
+/// Name of the Miden package section that stores a note storage schema.
+pub const PACKAGE_NOTE_STORAGE_SCHEMA_SECTION_ID: &str = "note_storage_schema";
+
+/// Returns the Miden package section id that stores a note storage schema.
+///
+/// One accessor keeps every producer and consumer on the same section contract.
+pub fn package_note_storage_schema_section_id() -> miden_mast_package::SectionId {
+    miden_mast_package::SectionId::custom(PACKAGE_NOTE_STORAGE_SCHEMA_SECTION_ID)
+        .expect("the note storage schema section id must be a valid custom section id")
+}
+
+/// Name of the Miden package section that stores a note codec.
+pub const PACKAGE_NOTE_CODEC_SECTION_ID: &str = "note_codec";
+
+/// Returns the Miden package section id that stores a note codec.
+///
+/// One accessor keeps every producer and consumer on the same section contract.
+pub fn package_note_codec_section_id() -> miden_mast_package::SectionId {
+    miden_mast_package::SectionId::custom(PACKAGE_NOTE_CODEC_SECTION_ID)
+        .expect("the note codec section id must be a valid custom section id")
+}
+
+/// Pads metadata bytes with NUL bytes to the 16-byte link-section alignment.
+///
+/// Account-component-metadata link sections use this 16-byte padding. Note storage schema link
+/// sections use the same contract.
+pub fn pad_to_link_section_alignment(mut bytes: Vec<u8>) -> Vec<u8> {
+    let padded_len = bytes.len().div_ceil(16) * 16;
+    bytes.resize(padded_len, 0);
+    bytes
+}
+
+/// Removes NUL padding from the end of a link-section payload.
+pub fn trim_trailing_nuls(bytes: &[u8]) -> &[u8] {
+    let len = bytes.iter().rposition(|byte| *byte != 0).map_or(0, |index| index + 1);
+    &bytes[..len]
+}
+
 /// The filesystem package-cache exchange contract.
 ///
 /// The compiler publishes compiled dependency packages — and its recorded dependency
 /// resolution — into the directory named by [`package_cache::PACKAGE_CACHE_ENV`]; the SDK
 /// macros and the build-script support crate consume them. Every spelling of that contract lives
-/// here so the producer and the consumers cannot drift apart. (The support crate is the one
-/// deliberate exception: it is dependency-free by design and spells the same values inline.)
+/// here so the producer and the consumers cannot drift apart. The one exception is
+/// `miden-sdk-build-script-support`, which spells the variable name inline because it carries no
+/// dependencies.
 pub mod package_cache {
     use alloc::{format, string::String};
 
@@ -250,6 +301,8 @@ pub struct PackageSections {
     pub account_component_metadata: Option<Vec<u8>>,
     /// The component's public WIT source emitted by the `#[component]` macro.
     pub component_wit: Option<Vec<u8>>,
+    /// The note storage schema.
+    pub note_storage_schema: Option<Vec<u8>>,
 }
 
 /// Frontend-only metadata emitted by the SDK macros into a dedicated Wasm custom section.
@@ -357,6 +410,16 @@ mod tests {
 
     use super::*;
 
+    /// Ensures shared link-section padding is reversible and aligned.
+    #[test]
+    fn link_section_padding_round_trips() {
+        let source = b"note schema";
+        let padded = pad_to_link_section_alignment(source.to_vec());
+
+        assert_eq!(padded.len() % 16, 0);
+        assert_eq!(trim_trailing_nuls(&padded), source);
+    }
+
     /// Ensures a single embedded component WIT source is recognized as one package.
     #[test]
     fn component_wit_counts_a_single_package_declaration() {
diff --git a/tests/fixtures/components/assert-debug-test/Cargo.lock b/tests/fixtures/components/assert-debug-test/Cargo.lock
index 4e0d6b16cd..d43827d596 100644
--- a/tests/fixtures/components/assert-debug-test/Cargo.lock
+++ b/tests/fixtures/components/assert-debug-test/Cargo.lock
@@ -950,7 +950,7 @@ checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
 [[package]]
 name = "miden"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base",
  "miden-base-macros",
@@ -1042,7 +1042,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base-sys",
  "miden-stdlib-sys",
@@ -1050,7 +1050,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-macros"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "heck",
  "miden-assembly-syntax",
@@ -1071,7 +1071,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field-repr",
  "miden-stdlib-sys",
@@ -1228,7 +1228,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr-derive",
@@ -1236,7 +1236,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr-derive"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1483,7 +1483,7 @@ dependencies = [
 
 [[package]]
 name = "miden-sdk-alloc"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-serde-utils"
@@ -1520,14 +1520,14 @@ dependencies = [
 
 [[package]]
 name = "miden-stdlib-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
 ]
 
 [[package]]
 name = "miden-tx-script-args"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr",
@@ -1599,7 +1599,7 @@ dependencies = [
 
 [[package]]
 name = "midenc-frontend-wasm-metadata"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-mast-package",
  "serde",
diff --git a/tests/fixtures/components/component-macros-account/Cargo.lock b/tests/fixtures/components/component-macros-account/Cargo.lock
index 1f7cbcfa62..06cba60213 100644
--- a/tests/fixtures/components/component-macros-account/Cargo.lock
+++ b/tests/fixtures/components/component-macros-account/Cargo.lock
@@ -950,7 +950,7 @@ checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
 [[package]]
 name = "miden"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base",
  "miden-base-macros",
@@ -1042,7 +1042,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base-sys",
  "miden-stdlib-sys",
@@ -1050,7 +1050,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-macros"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "heck",
  "miden-assembly-syntax",
@@ -1071,7 +1071,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field-repr",
  "miden-stdlib-sys",
@@ -1228,7 +1228,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr-derive",
@@ -1236,7 +1236,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr-derive"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1483,7 +1483,7 @@ dependencies = [
 
 [[package]]
 name = "miden-sdk-alloc"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-serde-utils"
@@ -1520,14 +1520,14 @@ dependencies = [
 
 [[package]]
 name = "miden-stdlib-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
 ]
 
 [[package]]
 name = "miden-tx-script-args"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr",
@@ -1599,7 +1599,7 @@ dependencies = [
 
 [[package]]
 name = "midenc-frontend-wasm-metadata"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-mast-package",
  "serde",
diff --git a/tests/fixtures/components/cross-ctx-account-word-arg/Cargo.lock b/tests/fixtures/components/cross-ctx-account-word-arg/Cargo.lock
index 4a5c46135f..60e31bb8e8 100644
--- a/tests/fixtures/components/cross-ctx-account-word-arg/Cargo.lock
+++ b/tests/fixtures/components/cross-ctx-account-word-arg/Cargo.lock
@@ -950,7 +950,7 @@ checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
 [[package]]
 name = "miden"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base",
  "miden-base-macros",
@@ -1042,7 +1042,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base-sys",
  "miden-stdlib-sys",
@@ -1050,7 +1050,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-macros"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "heck",
  "miden-assembly-syntax",
@@ -1071,7 +1071,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field-repr",
  "miden-stdlib-sys",
@@ -1228,7 +1228,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr-derive",
@@ -1236,7 +1236,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr-derive"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1483,7 +1483,7 @@ dependencies = [
 
 [[package]]
 name = "miden-sdk-alloc"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-serde-utils"
@@ -1520,14 +1520,14 @@ dependencies = [
 
 [[package]]
 name = "miden-stdlib-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
 ]
 
 [[package]]
 name = "miden-tx-script-args"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr",
@@ -1599,7 +1599,7 @@ dependencies = [
 
 [[package]]
 name = "midenc-frontend-wasm-metadata"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-mast-package",
  "serde",
diff --git a/tests/fixtures/components/cross-ctx-account-word/Cargo.lock b/tests/fixtures/components/cross-ctx-account-word/Cargo.lock
index 892f782e6d..09ac7d485b 100644
--- a/tests/fixtures/components/cross-ctx-account-word/Cargo.lock
+++ b/tests/fixtures/components/cross-ctx-account-word/Cargo.lock
@@ -950,7 +950,7 @@ checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
 [[package]]
 name = "miden"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base",
  "miden-base-macros",
@@ -1042,7 +1042,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base-sys",
  "miden-stdlib-sys",
@@ -1050,7 +1050,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-macros"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "heck",
  "miden-assembly-syntax",
@@ -1071,7 +1071,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field-repr",
  "miden-stdlib-sys",
@@ -1228,7 +1228,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr-derive",
@@ -1236,7 +1236,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr-derive"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1483,7 +1483,7 @@ dependencies = [
 
 [[package]]
 name = "miden-sdk-alloc"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-serde-utils"
@@ -1520,14 +1520,14 @@ dependencies = [
 
 [[package]]
 name = "miden-stdlib-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
 ]
 
 [[package]]
 name = "miden-tx-script-args"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr",
@@ -1599,7 +1599,7 @@ dependencies = [
 
 [[package]]
 name = "midenc-frontend-wasm-metadata"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-mast-package",
  "serde",
diff --git a/tests/fixtures/components/cross-ctx-account/Cargo.lock b/tests/fixtures/components/cross-ctx-account/Cargo.lock
index b90f596cc7..6854828b0a 100644
--- a/tests/fixtures/components/cross-ctx-account/Cargo.lock
+++ b/tests/fixtures/components/cross-ctx-account/Cargo.lock
@@ -950,7 +950,7 @@ checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
 [[package]]
 name = "miden"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base",
  "miden-base-macros",
@@ -1042,7 +1042,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base-sys",
  "miden-stdlib-sys",
@@ -1050,7 +1050,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-macros"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "heck",
  "miden-assembly-syntax",
@@ -1071,7 +1071,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field-repr",
  "miden-stdlib-sys",
@@ -1228,7 +1228,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr-derive",
@@ -1236,7 +1236,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr-derive"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1483,7 +1483,7 @@ dependencies = [
 
 [[package]]
 name = "miden-sdk-alloc"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-serde-utils"
@@ -1520,14 +1520,14 @@ dependencies = [
 
 [[package]]
 name = "miden-stdlib-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
 ]
 
 [[package]]
 name = "miden-tx-script-args"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr",
@@ -1599,7 +1599,7 @@ dependencies = [
 
 [[package]]
 name = "midenc-frontend-wasm-metadata"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-mast-package",
  "serde",
diff --git a/tests/fixtures/components/cross-ctx-note-word-arg/Cargo.lock b/tests/fixtures/components/cross-ctx-note-word-arg/Cargo.lock
index a1a9557dae..13dc0117be 100644
--- a/tests/fixtures/components/cross-ctx-note-word-arg/Cargo.lock
+++ b/tests/fixtures/components/cross-ctx-note-word-arg/Cargo.lock
@@ -950,7 +950,7 @@ checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
 [[package]]
 name = "miden"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base",
  "miden-base-macros",
@@ -1042,7 +1042,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base-sys",
  "miden-stdlib-sys",
@@ -1050,7 +1050,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-macros"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "heck",
  "miden-assembly-syntax",
@@ -1071,7 +1071,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field-repr",
  "miden-stdlib-sys",
@@ -1228,7 +1228,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr-derive",
@@ -1236,7 +1236,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr-derive"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1483,7 +1483,7 @@ dependencies = [
 
 [[package]]
 name = "miden-sdk-alloc"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-serde-utils"
@@ -1520,14 +1520,14 @@ dependencies = [
 
 [[package]]
 name = "miden-stdlib-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
 ]
 
 [[package]]
 name = "miden-tx-script-args"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr",
@@ -1599,7 +1599,7 @@ dependencies = [
 
 [[package]]
 name = "midenc-frontend-wasm-metadata"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-mast-package",
  "serde",
diff --git a/tests/fixtures/components/cross-ctx-note-word/Cargo.lock b/tests/fixtures/components/cross-ctx-note-word/Cargo.lock
index d4300213e2..e55b8093d7 100644
--- a/tests/fixtures/components/cross-ctx-note-word/Cargo.lock
+++ b/tests/fixtures/components/cross-ctx-note-word/Cargo.lock
@@ -950,7 +950,7 @@ checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
 [[package]]
 name = "miden"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base",
  "miden-base-macros",
@@ -1042,7 +1042,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base-sys",
  "miden-stdlib-sys",
@@ -1050,7 +1050,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-macros"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "heck",
  "miden-assembly-syntax",
@@ -1071,7 +1071,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field-repr",
  "miden-stdlib-sys",
@@ -1228,7 +1228,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr-derive",
@@ -1236,7 +1236,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr-derive"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1483,7 +1483,7 @@ dependencies = [
 
 [[package]]
 name = "miden-sdk-alloc"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-serde-utils"
@@ -1520,14 +1520,14 @@ dependencies = [
 
 [[package]]
 name = "miden-stdlib-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
 ]
 
 [[package]]
 name = "miden-tx-script-args"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr",
@@ -1599,7 +1599,7 @@ dependencies = [
 
 [[package]]
 name = "midenc-frontend-wasm-metadata"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-mast-package",
  "serde",
diff --git a/tests/fixtures/components/cross-ctx-note/Cargo.lock b/tests/fixtures/components/cross-ctx-note/Cargo.lock
index aa1c2c6616..b2b96882c9 100644
--- a/tests/fixtures/components/cross-ctx-note/Cargo.lock
+++ b/tests/fixtures/components/cross-ctx-note/Cargo.lock
@@ -950,7 +950,7 @@ checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
 [[package]]
 name = "miden"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base",
  "miden-base-macros",
@@ -1042,7 +1042,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base-sys",
  "miden-stdlib-sys",
@@ -1050,7 +1050,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-macros"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "heck",
  "miden-assembly-syntax",
@@ -1071,7 +1071,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field-repr",
  "miden-stdlib-sys",
@@ -1228,7 +1228,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr-derive",
@@ -1236,7 +1236,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr-derive"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1483,7 +1483,7 @@ dependencies = [
 
 [[package]]
 name = "miden-sdk-alloc"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-serde-utils"
@@ -1520,14 +1520,14 @@ dependencies = [
 
 [[package]]
 name = "miden-stdlib-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
 ]
 
 [[package]]
 name = "miden-tx-script-args"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr",
@@ -1599,7 +1599,7 @@ dependencies = [
 
 [[package]]
 name = "midenc-frontend-wasm-metadata"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-mast-package",
  "serde",
diff --git a/tests/fixtures/components/swapp-note/Cargo.lock b/tests/fixtures/components/swapp-note/Cargo.lock
index 4f7e15686f..823b65aa74 100644
--- a/tests/fixtures/components/swapp-note/Cargo.lock
+++ b/tests/fixtures/components/swapp-note/Cargo.lock
@@ -943,7 +943,7 @@ checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
 [[package]]
 name = "miden"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base",
  "miden-base-macros",
@@ -1035,7 +1035,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-base-sys",
  "miden-stdlib-sys",
@@ -1043,7 +1043,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-macros"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "heck",
  "miden-assembly-syntax",
@@ -1064,7 +1064,7 @@ dependencies = [
 
 [[package]]
 name = "miden-base-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field-repr",
  "miden-stdlib-sys",
@@ -1221,7 +1221,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr-derive",
@@ -1229,7 +1229,7 @@ dependencies = [
 
 [[package]]
 name = "miden-field-repr-derive"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1476,7 +1476,7 @@ dependencies = [
 
 [[package]]
 name = "miden-sdk-alloc"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 
 [[package]]
 name = "miden-serde-utils"
@@ -1513,14 +1513,14 @@ dependencies = [
 
 [[package]]
 name = "miden-stdlib-sys"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
 ]
 
 [[package]]
 name = "miden-tx-script-args"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-field",
  "miden-field-repr",
@@ -1592,7 +1592,7 @@ dependencies = [
 
 [[package]]
 name = "midenc-frontend-wasm-metadata"
-version = "0.14.0-rc.1"
+version = "0.14.0"
 dependencies = [
  "miden-mast-package",
  "serde",
diff --git a/tests/integration-network/Cargo.toml b/tests/integration-network/Cargo.toml
index 3bec4aff8d..01745cc759 100644
--- a/tests/integration-network/Cargo.toml
+++ b/tests/integration-network/Cargo.toml
@@ -33,3 +33,7 @@ tokio.workspace = true
 
 # For accessing shared compiler test builders and helpers
 midenc-integration-test-support.workspace = true
+
+[dev-dependencies]
+miden-note-schema = { workspace = true, features = ["codec-component"] }
+midenc-frontend-wasm-metadata.workspace = true
diff --git a/tests/integration-network/src/mockchain/counter/basic_auth.rs b/tests/integration-network/src/mockchain/counter/basic_auth.rs
index 989ec3aa75..ce627e3308 100644
--- a/tests/integration-network/src/mockchain/counter/basic_auth.rs
+++ b/tests/integration-network/src/mockchain/counter/basic_auth.rs
@@ -67,7 +67,7 @@ pub fn counter_note_basic_auth_increments_storage() {
         .build()
         .unwrap();
     let tx_measurements = execute_tx_measurements(&mut chain, mock_tx);
-    expect!["9090"].assert_eq(single_note_cycles(&tx_measurements));
+    expect!["9097"].assert_eq(single_note_cycles(&tx_measurements));
 
     // The counter contract storage value should be 2 after the note is consumed (incremented by 1).
     assert_counter_storage(
diff --git a/tests/integration-network/src/mockchain/counter/no_auth.rs b/tests/integration-network/src/mockchain/counter/no_auth.rs
index dca848961d..dffbb8b212 100644
--- a/tests/integration-network/src/mockchain/counter/no_auth.rs
+++ b/tests/integration-network/src/mockchain/counter/no_auth.rs
@@ -103,7 +103,7 @@ pub fn counter_note_no_auth_increments_storage_without_signature() {
         .unwrap();
     let tx_measurements = execute_tx_measurements(&mut chain, mock_tx);
     expect!["2125"].assert_eq(auth_procedure_cycles(&tx_measurements));
-    expect!["9090"].assert_eq(single_note_cycles(&tx_measurements));
+    expect!["9097"].assert_eq(single_note_cycles(&tx_measurements));
 
     // The counter contract storage value should be 2 after the note is consumed
     assert_counter_storage(
diff --git a/tests/integration-network/src/mockchain/notes/basic_wallet.rs b/tests/integration-network/src/mockchain/notes/basic_wallet.rs
index 6d8497674b..7ec71cdb28 100644
--- a/tests/integration-network/src/mockchain/notes/basic_wallet.rs
+++ b/tests/integration-network/src/mockchain/notes/basic_wallet.rs
@@ -111,7 +111,7 @@ pub fn basic_wallet_p2id_transfers_asset_with_custom_tx_script() {
         .unwrap();
     let tx_measurements = execute_tx_measurements(&mut chain, mock_tx);
     expect!["3473"].assert_eq(prologue_cycles(&tx_measurements));
-    expect!["5030"].assert_eq(single_note_cycles(&tx_measurements));
+    expect!["5040"].assert_eq(single_note_cycles(&tx_measurements));
 
     eprintln!("\n=== Checking Alice's account has the minted asset ===");
     let alice_account = chain.committed_account(alice_id).unwrap();
@@ -142,7 +142,7 @@ pub fn basic_wallet_p2id_transfers_asset_with_custom_tx_script() {
         .build()
         .unwrap();
     let tx_measurements = execute_tx_measurements(&mut chain, mock_tx);
-    expect!["5030"].assert_eq(single_note_cycles(&tx_measurements));
+    expect!["5040"].assert_eq(single_note_cycles(&tx_measurements));
 
     eprintln!("\n=== Checking Bob's account has the transferred asset ===");
     let bob_account = chain.committed_account(bob_id).unwrap();
@@ -281,7 +281,7 @@ pub fn basic_wallet_p2ide_allows_recipient_claim() {
         .build()
         .unwrap();
     let tx_measurements = execute_tx_measurements(&mut chain, mock_tx);
-    expect!["5467"].assert_eq(single_note_cycles(&tx_measurements));
+    expect!["5477"].assert_eq(single_note_cycles(&tx_measurements));
 
     // Step 5: verify balances
     let bob_account = chain.committed_account(bob_id).unwrap();
@@ -420,7 +420,7 @@ pub fn basic_wallet_p2ide_allows_sender_reclaim() {
         .build()
         .unwrap();
     let tx_measurements = execute_tx_measurements(&mut chain, mock_tx);
-    expect!["6042"].assert_eq(single_note_cycles(&tx_measurements));
+    expect!["6052"].assert_eq(single_note_cycles(&tx_measurements));
 
     // Step 5: verify Alice has her original amount back
     let alice_account = chain.committed_account(alice_id).unwrap();
diff --git a/tests/integration-network/src/mockchain/notes/mod.rs b/tests/integration-network/src/mockchain/notes/mod.rs
index 6ef1b20e3b..4580940069 100644
--- a/tests/integration-network/src/mockchain/notes/mod.rs
+++ b/tests/integration-network/src/mockchain/notes/mod.rs
@@ -1,2 +1,3 @@
 mod basic_wallet;
 mod note_constructor;
+mod schema;
diff --git a/tests/integration-network/src/mockchain/notes/note_constructor.rs b/tests/integration-network/src/mockchain/notes/note_constructor.rs
index 2b446a306d..9c994c58b1 100644
--- a/tests/integration-network/src/mockchain/notes/note_constructor.rs
+++ b/tests/integration-network/src/mockchain/notes/note_constructor.rs
@@ -173,7 +173,7 @@ pub fn tx_script_creates_p2id_note_via_note_constructor() {
         .build()
         .unwrap();
     let tx_measurements = execute_tx_measurements(&mut chain, create_tx);
-    expect!["8932"].assert_eq(tx_script_processing_cycles(&tx_measurements));
+    expect!["8942"].assert_eq(tx_script_processing_cycles(&tx_measurements));
 
     eprintln!("\n=== Step 4: Bob consumes the note created by the constructor ===");
     let faucet_inputs = chain.get_foreign_account_inputs(faucet_id).unwrap();
@@ -184,7 +184,7 @@ pub fn tx_script_creates_p2id_note_via_note_constructor() {
         .build()
         .unwrap();
     let tx_measurements = execute_tx_measurements(&mut chain, consume_tx);
-    expect!["5030"].assert_eq(single_note_cycles(&tx_measurements));
+    expect!["5040"].assert_eq(single_note_cycles(&tx_measurements));
 
     eprintln!("\n=== Checking Bob's account has the transferred asset ===");
     let bob_account = chain.committed_account(bob_id).unwrap();
diff --git a/tests/integration-network/src/mockchain/notes/schema.rs b/tests/integration-network/src/mockchain/notes/schema.rs
new file mode 100644
index 0000000000..4618e37071
--- /dev/null
+++ b/tests/integration-network/src/mockchain/notes/schema.rs
@@ -0,0 +1,169 @@
+//! Schema-driven note storage tests on the mock chain.
+
+use std::sync::Arc;
+
+use miden_client::{
+    account::{AccountComponent, component::InitStorageData},
+    asset::{Asset, FungibleAsset},
+    transaction::RawOutputNote,
+};
+use miden_mast_package::{Package, SectionId};
+use miden_note_schema::{CodecRegistry, NoteStorage, NoteStorageSchema};
+use miden_protocol::{
+    account::{AccountId, auth::AuthScheme},
+    address::NetworkId,
+    crypto::rand::RandomCoin,
+    note::Note,
+};
+use miden_standards::testing::note::NoteBuilder;
+use miden_testing::{Auth, MockChain};
+use midenc_frontend_wasm_metadata::{
+    PACKAGE_NOTE_CODEC_SECTION_ID, PACKAGE_NOTE_STORAGE_SCHEMA_SECTION_ID,
+    package_note_codec_section_id, package_note_storage_schema_section_id,
+};
+use midenc_integration_test_support::wasm_target_is_installed;
+
+use super::super::support::{
+    assert_account_has_fungible_asset, build_send_notes_script, compile_rust_package, execute_tx,
+    note_script_root,
+};
+
+/// Builds and consumes a note, then returns the consumed note and account ID.
+fn transfer_with_storage(
+    note_package: Arc<Package>,
+    build_storage: impl FnOnce(AccountId) -> NoteStorage,
+) -> (Note, AccountId) {
+    let wallet_package = compile_rust_package("../../examples/basic-wallet", true);
+    let wallet_component =
+        AccountComponent::from_package(&wallet_package, &InitStorageData::default()).unwrap();
+
+    let mut builder = MockChain::builder();
+    let faucet = builder
+        .add_existing_basic_faucet(
+            Auth::BasicAuth {
+                auth_scheme: AuthScheme::Falcon512Poseidon2,
+            },
+            "TEST",
+            1_000_000,
+            None,
+        )
+        .unwrap();
+    let faucet_id = faucet.id();
+    let recipient = builder
+        .add_existing_account_from_components(
+            Auth::BasicAuth {
+                auth_scheme: AuthScheme::Falcon512Poseidon2,
+            },
+            [wallet_component],
+        )
+        .unwrap();
+    let recipient_id = recipient.id();
+
+    let mut chain = builder.build().unwrap();
+    chain.prove_next_block().unwrap();
+    chain.prove_next_block().unwrap();
+
+    let transfer_amount = 100_000;
+    let asset = FungibleAsset::new(faucet_id, transfer_amount).unwrap();
+    let mut note_rng = RandomCoin::new(note_script_root(&note_package));
+    let note = NoteBuilder::new(faucet_id, &mut note_rng)
+        .package((*note_package).clone())
+        .add_assets([Asset::from(asset)])
+        .note_storage(build_storage(recipient_id).to_elements())
+        .unwrap()
+        .build()
+        .unwrap();
+
+    let faucet = chain.committed_account(faucet_id).unwrap().clone();
+    let send_script = build_send_notes_script(&faucet, std::slice::from_ref(&note));
+    let send = chain
+        .build_transaction(faucet_id)
+        .send_notes_script(&send_script)
+        .expected_output_notes(vec![RawOutputNote::Full(note.clone())])
+        .build()
+        .unwrap();
+    execute_tx(&mut chain, send);
+
+    let consume = chain
+        .build_transaction(recipient_id)
+        .authenticated_input_note(note.id())
+        .foreign_accounts(vec![chain.get_foreign_account_inputs(faucet_id).unwrap()])
+        .build()
+        .unwrap();
+    execute_tx(&mut chain, consume);
+
+    assert_account_has_fungible_asset(
+        chain.committed_account(recipient_id).unwrap(),
+        faucet_id,
+        transfer_amount,
+    );
+    (note, recipient_id)
+}
+
+#[test]
+fn dex_note_uses_embedded_schema_and_component_codec() {
+    if !wasm_target_is_installed() {
+        eprintln!("skipping DEX note schema test: wasm32-wasip2 is not installed");
+        return;
+    }
+    let note_package = compile_rust_package("../../examples/dex-note", true);
+    assert_package_section(
+        &note_package,
+        package_note_storage_schema_section_id(),
+        PACKAGE_NOTE_STORAGE_SCHEMA_SECTION_ID,
+    );
+    assert_package_section(
+        &note_package,
+        package_note_codec_section_id(),
+        PACKAGE_NOTE_CODEC_SECTION_ID,
+    );
+    let schema = NoteStorageSchema::from_package(&note_package).unwrap();
+    let codecs = CodecRegistry::load_from_package(&note_package).unwrap();
+
+    let (note, recipient_id) = transfer_with_storage(Arc::clone(&note_package), |recipient_id| {
+        schema
+            .builder_with_registry(&codecs)
+            .set("target", recipient_id.to_bech32(NetworkId::Mainnet))
+            .unwrap()
+            .set("price", "1.5")
+            .unwrap()
+            .build()
+            .unwrap()
+    });
+
+    let decoded = schema.decode_with_registry(note.storage(), &codecs).unwrap();
+    assert_eq!(
+        decoded.field("target").unwrap().to_string(),
+        recipient_id.to_bech32(NetworkId::Mainnet)
+    );
+    assert_eq!(decoded.field("price").unwrap().to_string(), "1.5");
+}
+
+#[test]
+fn p2id_note_builds_storage_without_a_component_codec() {
+    let note_package = compile_rust_package("../../examples/p2id-note", true);
+    let schema = NoteStorageSchema::from_package(&note_package).unwrap();
+
+    let (note, recipient_id) = transfer_with_storage(note_package, |recipient_id| {
+        schema
+            .builder()
+            .set("target-account-id", recipient_id.to_bech32(NetworkId::Mainnet))
+            .unwrap()
+            .build()
+            .unwrap()
+    });
+
+    let decoded = schema.decode(note.storage()).unwrap();
+    assert_eq!(
+        decoded.field("target_account_id").unwrap().to_string(),
+        recipient_id.to_bech32(NetworkId::Mainnet)
+    );
+}
+
+/// Asserts that a package carries one named custom section.
+fn assert_package_section(package: &Package, id: SectionId, name: &str) {
+    assert!(
+        package.sections.iter().any(|section| section.id == id),
+        "package does not contain the `{name}` section"
+    );
+}
diff --git a/tests/integration-network/src/mockchain/support/helpers.rs b/tests/integration-network/src/mockchain/support/helpers.rs
index 9d058d6354..187538ddcc 100644
--- a/tests/integration-network/src/mockchain/support/helpers.rs
+++ b/tests/integration-network/src/mockchain/support/helpers.rs
@@ -17,6 +17,7 @@ use miden_client::{
 use miden_core::Felt;
 use miden_field_repr::{FromFeltRepr, ToFeltRepr};
 use miden_mast_package::{Package, TargetType};
+use miden_note_schema::NoteStorageSchema;
 use miden_protocol::{
     account::{
         Account, AccountBuilder, AccountComponent, AccountId, AccountStorage, AccountType,
@@ -30,7 +31,7 @@ use miden_standards::{testing::note::NoteBuilder, tx_script::SendNotesTransactio
 use miden_testing::{MockChain, MockTransaction, MockTransactionBuilder};
 use miden_tx_script_args::{EncodedScriptArgs, ScriptArgs};
 use midenc_frontend_wasm::WasmTranslationConfig;
-use midenc_integration_test_support::CompilerTestBuilder;
+use midenc_integration_test_support::{CompilerTestBuilder, example_build_lock, workspace_root};
 use rand::{SeedableRng, rngs::StdRng};
 
 /// Host-side mirror of the transaction-script arguments declared in
@@ -114,6 +115,7 @@ pub(crate) fn block_on<F: Future>(future: F) -> F::Output {
 
 /// Compiles a Rust project and returns its Miden package.
 pub(crate) fn compile_rust_package(project_path: impl AsRef<Path>, release: bool) -> Arc<Package> {
+    let _build_lock = example_build_lock(&workspace_root());
     let project_path = project_path.as_ref();
     let config = WasmTranslationConfig::default();
     let mut builder = CompilerTestBuilder::rust_source_cargo_miden(project_path, config, []);
@@ -288,10 +290,18 @@ pub(crate) fn build_asset_transfer_tx(
     let faucet_id = asset.faucet_id();
 
     let asset: Asset = asset.into();
+    let schema = NoteStorageSchema::from_package(&p2id_note_package)
+        .expect("p2id note package should contain a storage schema");
+    let note_storage = schema
+        .builder()
+        .set("target-account-id", recipient_id.to_hex())
+        .expect("recipient account ID should match the p2id schema")
+        .build()
+        .expect("p2id schema should produce valid note storage");
     let output_note = NoteBuilder::new(sender_id, rng)
         .serial_number(serial_num)
         .package((*p2id_note_package).clone())
-        .note_storage(to_core_felts(&recipient_id))
+        .note_storage(note_storage.to_elements())
         .unwrap()
         .add_assets([asset])
         .tag(0)
diff --git a/tests/integration-network/src/mockchain/swapp.rs b/tests/integration-network/src/mockchain/swapp.rs
index 1d3b26e458..92caefa2b4 100644
--- a/tests/integration-network/src/mockchain/swapp.rs
+++ b/tests/integration-network/src/mockchain/swapp.rs
@@ -297,7 +297,7 @@ fn assert_no_fungible_asset(account: &Account, faucet_id: AccountId) {
 #[test]
 fn swapp_note_package_size() {
     let packages = compile_swapp_packages();
-    expect!["42586"].assert_eq(stripped_mast_size_str(packages.swapp.as_ref()).as_str());
+    expect!["42620"].assert_eq(stripped_mast_size_str(packages.swapp.as_ref()).as_str());
 }
 
 /// Tests a full fill of a SWAPP note.
@@ -353,7 +353,7 @@ fn swapp_note_full_fill_transfers_assets() {
         vec![p2id_note.id()],
         "full fill must create exactly the P2ID routing note"
     );
-    expect!["12839"].assert_eq(single_note_cycles(executed_tx.measurements()));
+    expect!["12849"].assert_eq(single_note_cycles(executed_tx.measurements()));
 
     let bob_account = chain.committed_account(bob.id()).unwrap();
     assert_account_has_fungible_asset(bob_account, usdc_faucet.id(), 50);
@@ -440,7 +440,7 @@ fn swapp_note_partial_fill_creates_remainder_and_chains() {
         vec![first_p2id_note.id(), remainder_note.id()],
         "partial fill must create the P2ID routing note and the remainder note"
     );
-    expect!["17931"].assert_eq(single_note_cycles(executed_tx.measurements()));
+    expect!["17941"].assert_eq(single_note_cycles(executed_tx.measurements()));
 
     let bob_account = chain.committed_account(bob.id()).unwrap();
     assert_account_has_fungible_asset(bob_account, usdc_faucet.id(), 3);
@@ -521,7 +521,7 @@ fn swapp_note_creator_reclaims_offered_asset() {
         output_note_ids(&executed_tx).is_empty(),
         "reclaiming the swap note must not create any output notes"
     );
-    expect!["5573"].assert_eq(single_note_cycles(executed_tx.measurements()));
+    expect!["5583"].assert_eq(single_note_cycles(executed_tx.measurements()));
 
     let alice_account = chain.committed_account(alice.id()).unwrap();
     assert_account_has_fungible_asset(alice_account, usdc_faucet.id(), 50);
diff --git a/tests/integration/Cargo.toml b/tests/integration/Cargo.toml
index a3944ce901..cc59df41a2 100644
--- a/tests/integration/Cargo.toml
+++ b/tests/integration/Cargo.toml
@@ -50,3 +50,5 @@ concat-idents = "1.1"
 libloading = "0.8"
 wasmi = "1.1.0"
 wat.workspace = true
+wit-bindgen-core.workspace = true
+midenc-frontend-wasm-metadata.workspace = true
diff --git a/tests/integration/src/end_to_end/examples/basic_wallet_package_sizes.rs b/tests/integration/src/end_to_end/examples/basic_wallet_package_sizes.rs
index 27b608044d..5a72d4695d 100644
--- a/tests/integration/src/end_to_end/examples/basic_wallet_package_sizes.rs
+++ b/tests/integration/src/end_to_end/examples/basic_wallet_package_sizes.rs
@@ -1,41 +1,23 @@
-use midenc_expect_test::expect;
-use midenc_frontend_wasm::WasmTranslationConfig;
+use std::path::Path;
 
-use crate::{CompilerTest, testing::stripped_mast_size_str};
+use midenc_expect_test::expect;
+use midenc_integration_test_support::compile_project;
 
-fn no_debug_flags() -> [String; 2] {
-    ["--debug".to_string(), "none".to_string()]
-}
+use crate::testing::stripped_mast_size_str;
 
 #[test]
 fn basic_wallet_and_p2id() {
-    let config = WasmTranslationConfig::default();
-    let mut account_test = CompilerTest::rust_source_cargo_miden(
-        "../../examples/basic-wallet",
-        config.clone(),
-        no_debug_flags(),
-    );
-    let account_package = account_test.compile_package();
+    let account_package = compile_project(Path::new("../../examples/basic-wallet"));
     assert!(account_package.is_library(), "expected library");
     expect!["8505"].assert_eq(stripped_mast_size_str(&account_package).as_str());
 
-    let mut tx_script_test = CompilerTest::rust_source_cargo_miden(
-        "../../examples/basic-wallet-tx-script",
-        config.clone(),
-        no_debug_flags(),
-    );
-    let tx_script_package = tx_script_test.compile_package();
+    let tx_script_package = compile_project(Path::new("../../examples/basic-wallet-tx-script"));
     assert!(tx_script_package.is_library(), "expected library");
     expect!["13784"].assert_eq(stripped_mast_size_str(&tx_script_package).as_str());
 
-    let mut p2id_test = CompilerTest::rust_source_cargo_miden(
-        "../../examples/p2id-note",
-        config.clone(),
-        no_debug_flags(),
-    );
-    let note_package = p2id_test.compile_package();
+    let note_package = compile_project(Path::new("../../examples/p2id-note"));
     assert!(note_package.is_library(), "expected library");
-    expect!["21763"].assert_eq(stripped_mast_size_str(&note_package).as_str());
+    expect!["21797"].assert_eq(stripped_mast_size_str(&note_package).as_str());
     // The note package exports both the note script and the `build-recipient` constructor; the
     // constructor must not interfere with the `@note_script`-attributed export selection.
     assert!(
@@ -45,12 +27,7 @@ fn basic_wallet_and_p2id() {
     miden_protocol::note::NoteScript::from_package(&note_package)
         .expect("expected the p2id note package to contain exactly one note script export");
 
-    let mut p2ide_test = CompilerTest::rust_source_cargo_miden(
-        "../../examples/p2ide-note",
-        config,
-        no_debug_flags(),
-    );
-    let p2ide_package = p2ide_test.compile_package();
+    let p2ide_package = compile_project(Path::new("../../examples/p2ide-note"));
     assert!(p2ide_package.is_library(), "expected library");
-    expect!["16402"].assert_eq(stripped_mast_size_str(&p2ide_package).as_str());
+    expect!["16436"].assert_eq(stripped_mast_size_str(&p2ide_package).as_str());
 }
diff --git a/tests/integration/src/end_to_end/examples/mod.rs b/tests/integration/src/end_to_end/examples/mod.rs
index 2ff4a3adce..a0ea501de6 100644
--- a/tests/integration/src/end_to_end/examples/mod.rs
+++ b/tests/integration/src/end_to_end/examples/mod.rs
@@ -7,4 +7,5 @@ mod counter_metadata;
 mod counter_note;
 mod fibonacci;
 mod is_prime;
+mod note_schema_metadata;
 mod storage_metadata;
diff --git a/tests/integration/src/end_to_end/examples/note_schema_metadata.rs b/tests/integration/src/end_to_end/examples/note_schema_metadata.rs
new file mode 100644
index 0000000000..948cdbd415
--- /dev/null
+++ b/tests/integration/src/end_to_end/examples/note_schema_metadata.rs
@@ -0,0 +1,250 @@
+//! Integration tests for note storage schemas stored in Miden packages.
+
+use miden_mast_package::Package;
+use midenc_expect_test::{Expect, expect};
+use midenc_frontend_wasm_metadata::{package_note_storage_schema_section_id, trim_trailing_nuls};
+use midenc_integration_test_support::{compile_project, workspace_root};
+use wit_bindgen_core::wit_parser::{Resolve, Type as WitType, TypeDefKind};
+
+/// Shared SDK core-types package appended to every generated note schema.
+const EXPECTED_CORE_TYPES: &str = concat!(
+    r#"package miden:base@1.0.0 {
+    interface core-types {
+        /// Represents an on-chain felt.
+        ///
+        /// Field modulus M = 2^64 - 2^32 + 1.
+        record felt {
+            /// The backing type is `f32` which will be treated as a felt by the compiler.
+"#,
+    "    \t/// We're basically hijacking the Wasm `f32` type and treat as felt.\n",
+    r#"            inner: f32,
+        }
+
+
+        /// A group of four field elements in the Miden base field.
+        record word {
+            a: felt,
+"#,
+    "    \tb: felt,\n",
+    "    \tc: felt,\n",
+    "    \td: felt,\n",
+    r#"        }
+
+        /// A cryptographic digest representing a 256-bit hash value.
+        /// This is a wrapper around `word` which contains 4 field elements.
+        record digest {
+            inner: word
+        }
+
+        /// Unique identifier of an account.
+        ///
+        /// # Layout
+        ///
+        /// An `AccountId` consists of two field elements, where the first is called the prefix and the
+        /// second is called the suffix. It is laid out as follows:
+        ///
+        /// prefix: [hash (56 bits) | storage mode (2 bits) | type (2 bits) | version (4 bits)]
+        /// suffix: [zero bit | hash (55 bits) | 8 zero bits]
+        record account-id {
+"#,
+    "        \tprefix: felt,\n",
+    "    \tsuffix: felt\n",
+    r#"        }
+
+        /// Recipient of the note, i.e., hash(hash(hash(serial_num, [0; 4]), note_script_hash), input_hash)
+        record recipient {
+            inner: word
+        }
+
+        record tag {
+            inner: felt
+        }
+
+        /// A fungible or a non-fungible asset.
+        ///
+        /// In protocol v0.14 assets are encoded as two words: an asset key and an asset value.
+        ///
+        /// The methodology for constructing fungible and non-fungible assets is described below.
+        ///
+        /// # Fungible assets
+        /// - `key`: `[0, 0, faucet_id_suffix, faucet_id_prefix]`
+        /// - `value`: `[amount, 0, 0, 0]`
+        ///
+        /// # Non-fungible assets
+        /// - `key`: `[hash0, hash1, faucet_id_suffix, faucet_id_prefix]`
+        /// - `value`: `DATA_HASH`
+        record asset {
+            key: word,
+            value: word,
+        }
+
+        /// A validated fungible asset amount, at most 2^63 - 2^31.
+        record asset-amount {
+            inner: felt
+        }
+
+        /// Account nonce
+        record nonce {
+            inner: felt
+        }
+
+        /// A block height in the chain
+        record block-number {
+            inner: felt
+        }
+
+        /// Account hash
+        record account-hash {
+            inner: word
+        }
+
+        /// Block hash
+        record block-hash {
+            inner: word
+        }
+
+        /// Storage value
+        record storage-value {
+            inner: word
+        }
+
+        /// Account storage root
+        record storage-root {
+            inner: word
+        }
+
+        /// Account code root
+        record account-code-root {
+            inner: word
+        }
+
+        /// Commitment to the account vault
+        record vault-commitment {
+            inner: word
+        }
+
+        /// An index of the created note
+        record note-idx {
+            inner: felt
+        }
+
+        record note-type {
+            inner: felt
+        }
+
+        record note-execution-hint {
+            inner: felt
+        }
+
+    }
+}
+"#,
+);
+
+/// Returns the unpadded note storage schema text from a package.
+fn note_storage_schema(package: &Package) -> &str {
+    let section_id = package_note_storage_schema_section_id();
+    let bytes = package
+        .sections
+        .iter()
+        .find(|section| section.id == section_id)
+        .expect("package must contain a note storage schema")
+        .data
+        .as_ref();
+    assert_eq!(bytes.len() % 16, 0, "schema payload must use 16-byte padding");
+    str::from_utf8(trim_trailing_nuls(bytes)).expect("note storage schema must be UTF-8")
+}
+
+/// Checks a schema golden and resolves its root storage alias with wit-parser.
+fn assert_note_storage_schema(package: &Package, expected_root: &str, expected: Expect) {
+    let source = note_storage_schema(package);
+    let core_types_start = source
+        .find("package miden:base@1.0.0 {")
+        .expect("schema must contain the SDK core-types package");
+    let (schema, core_types) = source.split_at(core_types_start);
+    expected.assert_eq(schema);
+    assert_eq!(core_types, EXPECTED_CORE_TYPES);
+
+    let mut resolve = Resolve::default();
+    let package_id = resolve
+        .push_str("note-schema.wit", source)
+        .expect("note storage schema must resolve");
+    let schema_package = &resolve.packages[package_id];
+    let interface_id = schema_package.interfaces["note-storage"];
+    let interface = &resolve.interfaces[interface_id];
+    let storage_id = interface.types["storage"];
+    let TypeDefKind::Type(WitType::Id(root_id)) = resolve.types[storage_id].kind else {
+        panic!("storage must be a named type alias");
+    };
+    assert_eq!(resolve.types[root_id].name.as_deref(), Some(expected_root));
+}
+
+#[test]
+fn note_packages_carry_resolvable_storage_schema_metadata() {
+    let workspace = workspace_root();
+    let p2id = compile_project(&workspace.join("examples/p2id-note"));
+    assert_note_storage_schema(
+        &p2id,
+        "p2id-note",
+        expect![[r#"
+            // This file is auto-generated by the `#[note]` macro.
+            // Do not edit this file manually.
+
+            package miden:p2id-schema@0.1.0;
+
+            use miden:base/core-types@1.0.0;
+
+            interface note-storage {
+                use core-types.{account-id};
+
+                record p2id-note {
+                    target-account-id: account-id,
+                }
+
+                type storage = p2id-note;
+            }
+
+        "#]],
+    );
+
+    let swapp = compile_project(&workspace.join("tests/fixtures/components/swapp-note"));
+    assert_note_storage_schema(
+        &swapp,
+        "swapp-note",
+        expect![[r#"
+            // This file is auto-generated by the `#[note]` macro.
+            // Do not edit this file manually.
+
+            package miden:swapp-note-schema@0.1.0;
+
+            use miden:base/core-types@1.0.0;
+
+            interface note-storage {
+                use core-types.{account-id, felt, word};
+
+                /// SWAPP note storage.
+                ///
+                /// The note creator stores the swap terms in the note storage; the fields below are decoded
+                /// from the storage elements in declaration order.
+                record swapp-note {
+                    /// Vault key identifying the requested asset (faucet id, composition, callback flags).
+                    requested-asset-key: word,
+                    /// Total requested asset amount for the full offer.
+                    requested-total: felt,
+                    /// The account that created the swap offer and receives the requested asset.
+                    creator: account-id,
+                    /// Note type used for the notes created by this script (P2ID routing note and remainder
+                    /// SWAPP note).
+                    output-note-type: felt,
+                    /// Tag routing the P2ID note to the creator.
+                    p2id-tag: felt,
+                    /// Script root of the P2ID note script used for the routing note.
+                    p2id-script-root: word,
+                }
+
+                type storage = swapp-note;
+            }
+
+        "#]],
+    );
+}
diff --git a/tests/integration/src/sdk/build_script.rs b/tests/integration/src/sdk/build_script.rs
index 85409ac0d2..f4d251d268 100644
--- a/tests/integration/src/sdk/build_script.rs
+++ b/tests/integration/src/sdk/build_script.rs
@@ -19,6 +19,8 @@ use std::{
     time::{SystemTime, UNIX_EPOCH},
 };
 
+use midenc_integration_test_support::scrub_nested_cargo_env;
+
 use super::basic_wallet_swapp_note_project;
 use crate::cargo_proj::project;
 
@@ -179,21 +181,23 @@ fn main() {
 /// concurrent tests reuse the fixture package names, so a shared cache would
 /// let one test observe another's generations.
 fn plain_cargo_check(consumer: &Path) -> Output {
-    Command::new("cargo")
+    let mut command = Command::new("cargo");
+    scrub_nested_cargo_env(&mut command);
+    command
         .arg("check")
         .env("CARGO_MIDEN", cargo_miden_binary())
         .env_remove("MIDENC_PACKAGE_CACHE")
         .env_remove("CARGO_TARGET_DIR")
         .env_remove("CARGO_BUILD_BUILD_DIR")
-        .env_remove("RUSTFLAGS")
-        .env_remove("CARGO_ENCODED_RUSTFLAGS")
         .current_dir(consumer)
         .output()
         .expect("failed to spawn cargo check")
 }
 
 fn counted_plain_cargo_check(consumer: &Path, counter: &Path) -> Output {
-    Command::new("cargo")
+    let mut command = Command::new("cargo");
+    scrub_nested_cargo_env(&mut command);
+    command
         .arg("check")
         .env("CARGO_MIDEN", counting_cargo_miden_binary())
         .env("MIDENC_TEST_REAL_CARGO_MIDEN", cargo_miden_binary())
@@ -201,8 +205,6 @@ fn counted_plain_cargo_check(consumer: &Path, counter: &Path) -> Output {
         .env_remove("MIDENC_PACKAGE_CACHE")
         .env_remove("CARGO_TARGET_DIR")
         .env_remove("CARGO_BUILD_BUILD_DIR")
-        .env_remove("RUSTFLAGS")
-        .env_remove("CARGO_ENCODED_RUSTFLAGS")
         .current_dir(consumer)
         .output()
         .expect("failed to spawn counted cargo check")
@@ -686,7 +688,9 @@ path = "src/lib.rs"
         .file("src/lib.rs", "")
         .build();
 
-    let output = std::process::Command::new("cargo")
+    let mut command = Command::new("cargo");
+    scrub_nested_cargo_env(&mut command);
+    let output = command
         .arg("check")
         .env("CARGO_MIDEN", project.root().join("definitely-missing-cargo-miden"))
         .env_remove("MIDENC_PACKAGE_CACHE")
diff --git a/tests/integration/src/sdk/macros.rs b/tests/integration/src/sdk/macros.rs
index 55d990ea31..d6ebbf9816 100644
--- a/tests/integration/src/sdk/macros.rs
+++ b/tests/integration/src/sdk/macros.rs
@@ -1,16 +1,19 @@
 use std::panic::{self, AssertUnwindSafe};
 
+use midenc_integration_test_support::scrub_nested_cargo_env;
+
 use super::*;
 
 fn cargo_check_miden_target(project: &crate::cargo_proj::Project) -> std::process::Output {
-    std::process::Command::new("cargo")
+    let mut command = std::process::Command::new("cargo");
+    // Scrub first: the helper also clears `RUSTFLAGS`, which this build sets below. Cargo prefers
+    // the encoded variable, so an inherited value would silently replace those flags.
+    scrub_nested_cargo_env(&mut command);
+    command
         .arg("check")
         .arg("--target")
         .arg("wasm32-wasip2")
         .env("RUSTFLAGS", "--cfg miden -C target-feature=+bulk-memory,+wide-arithmetic")
-        // Cargo prefers the encoded variable; an inherited value would silently replace the
-        // `RUSTFLAGS` set above.
-        .env_remove("CARGO_ENCODED_RUSTFLAGS")
         // The macros read dependency packages only from this directory, the way a driven build
         // or the contract build script exposes it.
         .env(
diff --git a/tests/integration/src/sdk/mod.rs b/tests/integration/src/sdk/mod.rs
index b099b11df1..5975a89f3d 100644
--- a/tests/integration/src/sdk/mod.rs
+++ b/tests/integration/src/sdk/mod.rs
@@ -5,6 +5,7 @@ use miden_core::serde::Serializable;
 use miden_mast_package::{Package, PackageExport, ProcedureExport, QualifiedProcedureName};
 use miden_protocol::note::NoteScript;
 use midenc_frontend_wasm::WasmTranslationConfig;
+use midenc_integration_test_support::{scrub_nested_cargo_env, write_masp_file_atomic};
 
 use crate::{
     CompilerTest, CompilerTestBuilder,
@@ -354,7 +355,11 @@ fn build_consumer_wat_with_package_cache(
     cargo_target_dir: &Path,
     package_cache_dir: &Path,
 ) -> String {
-    let output = std::process::Command::new("cargo")
+    let mut command = std::process::Command::new("cargo");
+    // Scrub first: the helper also clears `RUSTFLAGS`, which this build sets below. Cargo prefers
+    // the encoded variable, so an inherited value would silently replace those flags.
+    scrub_nested_cargo_env(&mut command);
+    let output = command
         .args(["build", "--release", "--locked", "--manifest-path"])
         .arg(consumer.join("Cargo.toml"))
         .env("CARGO_TARGET_DIR", cargo_target_dir)
@@ -363,7 +368,6 @@ fn build_consumer_wat_with_package_cache(
             package_cache_dir,
         )
         .env("RUSTFLAGS", "--cfg miden -C target-feature=+bulk-memory,+wide-arithmetic")
-        .env_remove("CARGO_ENCODED_RUSTFLAGS")
         .current_dir(consumer)
         .output()
         .expect("failed to spawn Cargo for the option_env isolation fixture");
@@ -908,11 +912,9 @@ fn rust_sdk_fpi_reexpands_after_only_package_cache_env_changes() {
     for cache in [&first_cache, &second_cache] {
         fs::create_dir_all(cache).unwrap();
     }
-    first_package
-        .write_masp_file(&first_cache)
+    write_masp_file_atomic(&first_package, &first_cache)
         .expect("failed to prepopulate the first package cache");
-    second_package
-        .write_masp_file(&second_cache)
+    write_masp_file_atomic(&second_package, &second_cache)
         .expect("failed to prepopulate the second package cache");
 
     let cargo_target_dir = project.root().join("option-env-cargo-target");
diff --git a/tests/support/src/lib.rs b/tests/support/src/lib.rs
index 4ae60063d0..1e3fe26c4d 100644
--- a/tests/support/src/lib.rs
+++ b/tests/support/src/lib.rs
@@ -2,6 +2,17 @@
 #![deny(warnings)]
 #![deny(missing_docs)]
 
+use std::{
+    fs::{self, File},
+    path::{Path, PathBuf},
+    process::Command,
+    sync::Arc,
+};
+
+use miden_mast_package::Package;
+use midenc_frontend_wasm::WasmTranslationConfig;
+use midenc_frontend_wasm_metadata::NESTED_CARGO_SCRUB_ENV;
+
 /// Utilities for generating on-disk Cargo projects for tests.
 pub mod cargo_proj;
 /// Compiler test builders and pipeline assertions.
@@ -20,3 +31,73 @@ pub use self::{
     compiler_test::{CargoTest, CompilerTest, CompilerTestBuilder, RustcTest, WasmTest},
     testing::setup::default_session,
 };
+
+/// Compiles one Cargo Miden project without debug output.
+pub fn compile_project(project_path: &Path) -> Arc<Package> {
+    let _build_lock = example_build_lock(&workspace_root());
+    let mut test = CompilerTest::rust_source_cargo_miden(
+        project_path,
+        WasmTranslationConfig::default(),
+        ["--debug".to_owned(), "none".to_owned()],
+    );
+    test.compile_package()
+}
+
+/// Returns the compiler workspace root.
+pub fn workspace_root() -> PathBuf {
+    Path::new(env!("CARGO_MANIFEST_DIR")).join("../..").canonicalize().unwrap()
+}
+
+/// Locks shared example outputs while one build is running.
+pub fn example_build_lock(workspace: &Path) -> File {
+    let target_dir = workspace.join("target");
+    fs::create_dir_all(&target_dir).expect("failed to create the workspace target directory");
+    let lock = File::options()
+        .read(true)
+        .write(true)
+        .create(true)
+        .truncate(false)
+        .open(target_dir.join("example-build.lock"))
+        .expect("failed to open the example build lock");
+    lock.lock().expect("failed to lock example builds");
+    lock
+}
+
+/// Writes a Miden package through the production atomic package publisher.
+pub fn write_masp_file_atomic(
+    package: &Package,
+    output_dir: impl AsRef<Path>,
+) -> std::io::Result<()> {
+    midenc_session::registry::write_package_atomically(package, output_dir.as_ref())
+        .map(|_| ())
+        .map_err(std::io::Error::other)
+}
+
+/// Removes outer build settings that would poison a nested Cargo invocation.
+pub fn scrub_nested_cargo_env(cmd: &mut Command) {
+    for &variable in NESTED_CARGO_SCRUB_ENV {
+        cmd.env_remove(variable);
+    }
+}
+
+/// Returns true when the active Rust sysroot contains the codec component target.
+pub fn wasm_target_is_installed() -> bool {
+    const WASM_TARGET: &str = "wasm32-wasip2";
+
+    let output = match Command::new("rustc").args(["--print", "sysroot"]).output() {
+        Ok(output) if output.status.success() => output,
+        Ok(output) => {
+            eprintln!(
+                "`rustc --print sysroot` failed:\n{}",
+                String::from_utf8_lossy(&output.stderr)
+            );
+            return false;
+        }
+        Err(error) => {
+            eprintln!("could not run `rustc --print sysroot` (rustup may be unavailable): {error}");
+            return false;
+        }
+    };
+    let sysroot = Path::new(String::from_utf8_lossy(&output.stdout).trim()).to_path_buf();
+    sysroot.join("lib").join("rustlib").join(WASM_TARGET).exists()
+}
diff --git a/tools/cargo-miden/Cargo.toml b/tools/cargo-miden/Cargo.toml
index da30d8303b..fcb3bc4e19 100644
--- a/tools/cargo-miden/Cargo.toml
+++ b/tools/cargo-miden/Cargo.toml
@@ -57,3 +57,10 @@ walkdir = "2.5"
 serde_json.workspace = true
 # Verifies a downloaded template bundle against the digest GitHub reports.
 sha2.workspace = true
+
+[dev-dependencies]
+miden-mast-package = { workspace = true, features = ["std"] }
+midenc-frontend-wasm-metadata.workspace = true
+midenc-integration-test-support.workspace = true
+wit-component.workspace = true
+wit-parser.workspace = true
diff --git a/tools/cargo-miden/templates.tar.gz b/tools/cargo-miden/templates.tar.gz
index 3c60cb91b1..ca921b5fa5 100644
Binary files a/tools/cargo-miden/templates.tar.gz and b/tools/cargo-miden/templates.tar.gz differ
diff --git a/tools/cargo-miden/tests/dex_note_codec_build.rs b/tools/cargo-miden/tests/dex_note_codec_build.rs
new file mode 100644
index 0000000000..92cd0036f8
--- /dev/null
+++ b/tools/cargo-miden/tests/dex_note_codec_build.rs
@@ -0,0 +1,112 @@
+//! Integration test for DEX note schema and codec package sections.
+
+use std::env;
+
+use cargo_miden::run;
+use miden_mast_package::Package;
+use midenc_frontend_wasm_metadata::{
+    package_note_codec_section_id, package_note_storage_schema_section_id,
+};
+use midenc_integration_test_support::{
+    example_build_lock, wasm_target_is_installed, workspace_root,
+};
+use wit_component::DecodedWasm;
+use wit_parser::WorldItem;
+
+use crate::utils::{RestoreEnvironment, current_dir_lock};
+
+#[test]
+fn dex_note_build_embeds_schema_and_wasi_only_codec_component() {
+    if !wasm_target_is_installed() {
+        eprintln!("skipping DEX note codec build test: wasm32-wasip2 is not installed");
+        return;
+    }
+    // The command reads the process working directory, so serialize cwd changes.
+    let _cwd_lock = current_dir_lock();
+    let _ = midenc_log::Builder::from_env("MIDENC_TRACE")
+        .is_test(true)
+        .format_timestamp(None)
+        .try_init();
+
+    // Clear the outer override. The example package then uses its own target layout.
+    let _restore_environment = RestoreEnvironment::new(["CARGO_TARGET_DIR"]);
+    unsafe {
+        env::remove_var("CARGO_TARGET_DIR");
+    }
+
+    let workspace = workspace_root();
+    let note_dir = workspace.join("examples/dex-note");
+    env::set_current_dir(&note_dir).unwrap();
+    let result = {
+        let _build_lock = example_build_lock(&workspace);
+        run(["cargo", "miden", "build", "--release"].into_iter().map(str::to_owned))
+    };
+
+    let output = result
+        .expect("cargo miden build for dex-note failed")
+        .expect("expected BuildCommandOutput")
+        .unwrap_build_output();
+    let codec_work_dir = workspace.join("examples/dex-note-codec/target/midenc.note-codec");
+    assert!(
+        codec_work_dir.join("package-cache").is_dir(),
+        "the codec package cache is outside the codec crate"
+    );
+    assert!(
+        codec_work_dir.join("cargo-target").is_dir(),
+        "the codec Cargo target directory is outside the codec crate"
+    );
+    assert_eq!(output.len(), 1, "expected one dex-note package artifact, got {output:?}");
+    let package = Package::deserialize_from_file(&output[0])
+        .expect("failed to read the built dex-note package");
+
+    let schema_id = package_note_storage_schema_section_id();
+    assert!(
+        package.sections.iter().any(|section| section.id == schema_id),
+        "dex-note package has no note storage schema section"
+    );
+
+    let codec_id = package_note_codec_section_id();
+    let codec = package
+        .sections
+        .iter()
+        .find(|section| section.id == codec_id)
+        .expect("dex-note package has no note codec section");
+    assert_note_codec_component(codec.data.as_ref());
+}
+
+/// Verifies the sandbox and versioned interface exported by a note codec component.
+fn assert_note_codec_component(component: &[u8]) {
+    let DecodedWasm::Component(resolve, world_id) =
+        wit_component::decode(component).expect("note codec section is not valid component bytes")
+    else {
+        panic!("note codec section is not a component");
+    };
+    let world = &resolve.worlds[world_id];
+    for (key, _) in world.imports.iter() {
+        let name = resolve.name_world_key(key);
+        assert!(name.starts_with("wasi:"), "unexpected non-WASI import `{name}`");
+    }
+    assert_eq!(world.exports.len(), 1, "unexpected note codec exports: {:#?}", world.exports);
+
+    let interface = world
+        .exports
+        .values()
+        .find_map(|item| {
+            let WorldItem::Interface { id, .. } = item else {
+                return None;
+            };
+            let interface = &resolve.interfaces[*id];
+            let package_id = interface.package?;
+            let package = &resolve.packages[package_id].name;
+            (interface.name.as_deref() == Some("codec")
+                && package.namespace == "miden"
+                && package.name == "note-codec"
+                && package.version.as_ref().is_some_and(|version| version.to_string() == "1.0.0"))
+            .then_some(interface)
+        })
+        .expect("component does not export `miden:note-codec/codec@1.0.0`");
+    assert_eq!(
+        interface.functions.keys().map(String::as_str).collect::<Vec<_>>(),
+        ["supported-types", "parse", "display", "validate"]
+    );
+}
diff --git a/tools/cargo-miden/tests/dex_note_dependency_build.rs b/tools/cargo-miden/tests/dex_note_dependency_build.rs
new file mode 100644
index 0000000000..bc99e5d880
--- /dev/null
+++ b/tools/cargo-miden/tests/dex_note_dependency_build.rs
@@ -0,0 +1,169 @@
+//! Integration test for a note that is built as a dependency of another project.
+//!
+//! A note carries its author codec only when it is the root target of the build. A note that
+//! another project pulls in as a source dependency gets the note storage schema, but no codec
+//! section: the codec crate's inputs are outside the build provenance, so a stored dependency
+//! copy could keep a stale codec, and every dependency assembly would otherwise run a nested
+//! cargo build.
+
+use std::{env, fs, path::Path};
+
+use cargo_miden::run;
+use miden_mast_package::Package;
+use midenc_frontend_wasm_metadata::{
+    package_note_codec_section_id, package_note_storage_schema_section_id,
+};
+use midenc_integration_test_support::{
+    example_build_lock, wasm_target_is_installed, workspace_root,
+};
+
+use crate::utils::{RestoreEnvironment, current_dir_lock, with_package_cache_env};
+
+#[test]
+fn dex_note_built_as_a_dependency_has_the_schema_but_no_codec() {
+    if !wasm_target_is_installed() {
+        eprintln!("skipping DEX note dependency build test: wasm32-wasip2 is not installed");
+        return;
+    }
+    // The command reads the process working directory, so serialize cwd changes.
+    let _cwd_lock = current_dir_lock();
+    let _ = midenc_log::Builder::from_env("MIDENC_TRACE")
+        .is_test(true)
+        .format_timestamp(None)
+        .try_init();
+
+    // Clear the outer override. The scratch project then uses its own target layout.
+    let _restore_environment = RestoreEnvironment::new(["CARGO_TARGET_DIR"]);
+    unsafe {
+        env::remove_var("CARGO_TARGET_DIR");
+    }
+
+    let workspace = workspace_root();
+    let project_dir = tempfile::tempdir().expect("failed to create the dependent project dir");
+    let dependent = project_dir.path().join("counter-contract");
+    scaffold_dependent_project(&workspace, &dependent);
+
+    // A caller-provided package cache is adopted and left in place, so the dependency packages
+    // this build publishes can be read after the compiler exits.
+    let cache_dir = tempfile::tempdir().expect("failed to create the package cache dir");
+    let export_dir = cache_dir.path().to_path_buf();
+
+    env::set_current_dir(&dependent).unwrap();
+    let result = {
+        let _build_lock = example_build_lock(&workspace);
+        with_package_cache_env(&export_dir, || {
+            run(["cargo", "miden", "build", "--release"].into_iter().map(str::to_owned))
+        })
+    };
+
+    let output = result
+        .expect("cargo miden build for the dex-note dependent failed")
+        .expect("expected BuildCommandOutput")
+        .unwrap_build_output();
+    assert_eq!(output.len(), 1, "expected one dependent package artifact, got {output:?}");
+    assert!(output[0].exists(), "the dependent package was not written to {:?}", output[0]);
+
+    let dependency_package = export_dir.join("dex-note.masp");
+    assert!(
+        dependency_package.exists(),
+        "expected the dex-note dependency package at {}; the cache holds {:?}",
+        dependency_package.display(),
+        exported_file_names(&export_dir)
+    );
+    let package = Package::deserialize_from_file(&dependency_package)
+        .expect("failed to read the dex-note dependency package");
+
+    let schema_id = package_note_storage_schema_section_id();
+    assert!(
+        package.sections.iter().any(|section| section.id == schema_id),
+        "the dex-note dependency package has no note storage schema section"
+    );
+    let codec_id = package_note_codec_section_id();
+    assert!(
+        !package.sections.iter().any(|section| section.id == codec_id),
+        "the dex-note dependency package must carry no note codec section"
+    );
+}
+
+/// Copies the counter-contract example to `destination` and makes it depend on `dex-note`.
+///
+/// The copy is built outside the compiler workspace, so every relative path in its manifests is
+/// rewritten to the workspace copy it names.
+fn scaffold_dependent_project(workspace: &Path, destination: &Path) {
+    let source = workspace.join("examples/counter-contract");
+    copy_project(&source, destination);
+
+    for manifest in ["Cargo.toml", "miden-project.toml"] {
+        let path = destination.join(manifest);
+        let rewritten = absolutize_manifest_paths(&fs::read_to_string(&path).unwrap(), &source);
+        fs::write(&path, rewritten).unwrap();
+    }
+
+    let manifest = destination.join("miden-project.toml");
+    let contents = fs::read_to_string(&manifest).unwrap();
+    let dex_note = workspace.join("examples/dex-note");
+    let with_dependency = contents.replace(
+        "[dependencies]\n",
+        &format!("[dependencies]\ndex-note = {{ path = \"{}\" }}\n", dex_note.display()),
+    );
+    assert_ne!(with_dependency, contents, "the example manifest has no `[dependencies]` table");
+    fs::write(&manifest, with_dependency).unwrap();
+}
+
+/// Copies a project directory, skipping build outputs.
+fn copy_project(source: &Path, destination: &Path) {
+    fs::create_dir_all(destination).unwrap();
+    for entry in fs::read_dir(source).unwrap() {
+        let entry = entry.unwrap();
+        let name = entry.file_name();
+        if name == "target" {
+            continue;
+        }
+        let target = destination.join(&name);
+        if entry.file_type().unwrap().is_dir() {
+            copy_project(&entry.path(), &target);
+        } else {
+            fs::copy(entry.path(), &target).unwrap();
+        }
+    }
+}
+
+/// Rewrites every relative `path = "..."` value to the location it names under `manifest_dir`.
+fn absolutize_manifest_paths(manifest: &str, manifest_dir: &Path) -> String {
+    const KEY: &str = "path = \"";
+
+    let mut out = String::with_capacity(manifest.len());
+    let mut rest = manifest;
+    while let Some(start) = rest.find(KEY) {
+        let (head, tail) = rest.split_at(start + KEY.len());
+        out.push_str(head);
+        let end = tail.find('"').expect("unterminated path value in the manifest");
+        let (value, tail) = tail.split_at(end);
+        let path = Path::new(value);
+        if path.is_absolute() {
+            out.push_str(value);
+        } else {
+            let resolved = manifest_dir.join(path);
+            // `src/lib.rs` and the like must stay relative to the copy, not point back to it.
+            match resolved.canonicalize() {
+                Ok(resolved) if !resolved.starts_with(manifest_dir) => {
+                    out.push_str(&resolved.display().to_string())
+                }
+                _ => out.push_str(value),
+            }
+        }
+        rest = tail;
+    }
+    out.push_str(rest);
+    out
+}
+
+/// The file names the build left in the package cache, for assertion messages.
+fn exported_file_names(export_dir: &Path) -> Vec<String> {
+    let Ok(entries) = fs::read_dir(export_dir) else {
+        return Vec::new();
+    };
+    entries
+        .filter_map(|entry| Some(entry.ok()?.file_name().to_string_lossy().into_owned()))
+        .collect()
+}
diff --git a/tools/cargo-miden/tests/mod.rs b/tools/cargo-miden/tests/mod.rs
index 7f555af08a..4b0760f623 100755
--- a/tools/cargo-miden/tests/mod.rs
+++ b/tools/cargo-miden/tests/mod.rs
@@ -1,3 +1,5 @@
+mod dex_note_codec_build;
+mod dex_note_dependency_build;
 mod masm_dependency;
 mod p2id_cargo_miden_build;
 mod target_dir;
diff --git a/tools/cargo-miden/tests/p2id_cargo_miden_build.rs b/tools/cargo-miden/tests/p2id_cargo_miden_build.rs
index c488f14f67..8176109d41 100644
--- a/tools/cargo-miden/tests/p2id_cargo_miden_build.rs
+++ b/tools/cargo-miden/tests/p2id_cargo_miden_build.rs
@@ -1,8 +1,9 @@
 use std::{env, time::SystemTime};
 
 use cargo_miden::run;
+use midenc_integration_test_support::{example_build_lock, workspace_root};
 
-use crate::utils::{current_dir_lock, workspace_root};
+use crate::utils::current_dir_lock;
 
 /// A caller-provided `MIDENC_PACKAGE_CACHE` materializes a build's Miden dependencies on disk.
 ///
@@ -27,7 +28,8 @@ fn p2id_build_materializes_basic_wallet_dependency() {
         env::remove_var("CARGO_TARGET_DIR");
     }
 
-    let examples = workspace_root().join("examples");
+    let workspace = workspace_root();
+    let examples = workspace.join("examples");
     let p2id_note_dir = examples.join("p2id-note");
 
     // Build the p2id-note project, which pulls in basic-wallet as a Miden dependency.
@@ -35,9 +37,12 @@ fn p2id_build_materializes_basic_wallet_dependency() {
     env::set_current_dir(&p2id_note_dir).unwrap();
     let build_started_at = SystemTime::now();
     let export_dir = crate::utils::exported_packages_dir(&p2id_note_dir);
-    let result = crate::utils::with_package_cache_env(&export_dir, || {
-        run(["cargo", "miden", "build", "--release"].into_iter().map(|s| s.to_string()))
-    });
+    let result = {
+        let _build_lock = example_build_lock(&workspace);
+        crate::utils::with_package_cache_env(&export_dir, || {
+            run(["cargo", "miden", "build", "--release"].into_iter().map(|s| s.to_string()))
+        })
+    };
     env::set_current_dir(&restore_dir).unwrap();
 
     // Restore `CARGO_TARGET_DIR` before asserting, so a build failure doesn't leak the unset state.
diff --git a/tools/cargo-miden/tests/target_dir.rs b/tools/cargo-miden/tests/target_dir.rs
index b2e34ac847..25e88c68f3 100644
--- a/tools/cargo-miden/tests/target_dir.rs
+++ b/tools/cargo-miden/tests/target_dir.rs
@@ -2,7 +2,7 @@ use std::{env, fs};
 
 use cargo_miden::run;
 
-use crate::utils::{current_dir_lock, project_template_arg};
+use crate::utils::{RestoreEnvironment, current_dir_lock, project_template_arg};
 
 /// A custom Midenc target is an umbrella for every artifact the compiler-owned build writes.
 ///
@@ -11,35 +11,13 @@ use crate::utils::{current_dir_lock, project_template_arg};
 /// manifest frontend redirects its nested Cargo invocation beneath the custom target.
 #[test]
 fn a_custom_midenc_target_contains_nested_cargo_artifacts() {
-    struct RestoreEnvironment {
-        cargo_target_dir: Option<std::ffi::OsString>,
-        cargo_build_target_dir: Option<std::ffi::OsString>,
-        midenc_target_dir: Option<std::ffi::OsString>,
-        test: Option<std::ffi::OsString>,
-    }
-    impl Drop for RestoreEnvironment {
-        fn drop(&mut self) {
-            for (name, value) in [
-                ("CARGO_TARGET_DIR", self.cargo_target_dir.take()),
-                ("CARGO_BUILD_TARGET_DIR", self.cargo_build_target_dir.take()),
-                ("MIDENC_TARGET_DIR", self.midenc_target_dir.take()),
-                ("TEST", self.test.take()),
-            ] {
-                match value {
-                    Some(value) => unsafe { env::set_var(name, value) },
-                    None => unsafe { env::remove_var(name) },
-                }
-            }
-        }
-    }
-
     let _cwd = current_dir_lock();
-    let _restore_environment = RestoreEnvironment {
-        cargo_target_dir: env::var_os("CARGO_TARGET_DIR"),
-        cargo_build_target_dir: env::var_os("CARGO_BUILD_TARGET_DIR"),
-        midenc_target_dir: env::var_os("MIDENC_TARGET_DIR"),
-        test: env::var_os("TEST"),
-    };
+    let _restore_environment = RestoreEnvironment::new([
+        "CARGO_TARGET_DIR",
+        "CARGO_BUILD_TARGET_DIR",
+        "MIDENC_TARGET_DIR",
+        "TEST",
+    ]);
     unsafe {
         env::remove_var("CARGO_TARGET_DIR");
         env::remove_var("CARGO_BUILD_TARGET_DIR");
diff --git a/tools/cargo-miden/tests/utils.rs b/tools/cargo-miden/tests/utils.rs
index 1c194b017f..0f7da08f52 100644
--- a/tools/cargo-miden/tests/utils.rs
+++ b/tools/cargo-miden/tests/utils.rs
@@ -63,6 +63,31 @@ pub(crate) fn current_dir_lock() -> CurrentDirGuard {
     }
 }
 
+/// Restores selected process environment variables when dropped.
+pub(crate) struct RestoreEnvironment {
+    values: Vec<(&'static str, Option<std::ffi::OsString>)>,
+}
+
+impl RestoreEnvironment {
+    /// Captures the current values of the selected environment variables.
+    pub(crate) fn new<const N: usize>(names: [&'static str; N]) -> Self {
+        Self {
+            values: names.into_iter().map(|name| (name, env::var_os(name))).collect(),
+        }
+    }
+}
+
+impl Drop for RestoreEnvironment {
+    fn drop(&mut self) {
+        for (name, value) in self.values.drain(..) {
+            match value {
+                Some(value) => unsafe { env::set_var(name, value) },
+                None => unsafe { env::remove_var(name) },
+            }
+        }
+    }
+}
+
 /// The directory the post-build package tests hand to the compiler as its package cache.
 ///
 /// A lease the compiler mints itself is deleted when the compiler finishes, so a test that
@@ -298,11 +323,3 @@ fn write_template(
     fs::write(template_root.join("src/lib.rs"), lib_rs)?;
     Ok(())
 }
-
-pub(crate) fn workspace_root() -> PathBuf {
-    PathBuf::from(env!("CARGO_MANIFEST_DIR"))
-        .parent()
-        .and_then(Path::parent)
-        .expect("cargo-miden should live under tools/cargo-miden")
-        .to_path_buf()
-}