diff --git a/.azurepipelines/preview.yml b/.azurepipelines/preview.yml
index 789ea451bd..03f2ba5cfd 100644
--- a/.azurepipelines/preview.yml
+++ b/.azurepipelines/preview.yml
@@ -89,7 +89,6 @@ jobs:
     inputs:
       command: restore
       projects: 'preview-pack.slnx'
-      arguments: '--configuration ${{parameters.config}}'
       restoreArguments: '--disable-parallel'
   - task: DotNetCoreCLI@2
     displayName: Build ${{parameters.config}}
@@ -121,6 +120,12 @@ jobs:
       configuration: ${{parameters.config}}
       configurationToPack: ${{parameters.config}}
       nobuild: true
+  - task: PowerShell@2
+    displayName: Validate source generator packages
+    condition: and(succeeded(), eq('${{parameters.config}}', 'Release'))
+    inputs:
+      filePath: '.azurepipelines/validate-source-generator-packages.ps1'
+      arguments: '-PackageDirectory "$(Build.ArtifactStagingDirectory)"'
   - task: NuGetCommand@2
     displayName: Pack Nuget Legacy Preview
     condition: and(succeeded(), and(eq('${{parameters.config}}', 'Release'), ne(variables['NBGV_PublicRelease'], 'True')))
diff --git a/.azurepipelines/validate-source-generator-packages.ps1 b/.azurepipelines/validate-source-generator-packages.ps1
new file mode 100644
index 0000000000..7aa227db3b
--- /dev/null
+++ b/.azurepipelines/validate-source-generator-packages.ps1
@@ -0,0 +1,301 @@
+<#
+.SYNOPSIS
+    Validates the source-generator NuGet payloads and builds clean consumers.
+
+.PARAMETER PackageDirectory
+    Directory containing the packed source-generator NuGet packages.
+#>
+
+param(
+    [Parameter(Mandatory = $true)]
+    [string] $PackageDirectory
+)
+
+$ErrorActionPreference = "Stop"
+
+function Assert-Condition
+{
+    param(
+        [Parameter(Mandatory = $true)]
+        [bool] $Condition,
+
+        [Parameter(Mandatory = $true)]
+        [string] $Message
+    )
+
+    if (-not $Condition)
+    {
+        throw $Message
+    }
+}
+
+function Get-PackageInfo
+{
+    param(
+        [Parameter(Mandatory = $true)]
+        [string] $PackageId
+    )
+
+    $packagePattern = "^$([Regex]::Escape($PackageId))\.(?<version>[0-9].+)\.nupkg$"
+    $packages = @(Get-ChildItem -Path $PackageDirectory -Filter "$PackageId*.nupkg" -File -Recurse |
+        Where-Object { $_.Name -notlike "*.snupkg" -and $_.Name -match $packagePattern })
+
+    Assert-Condition ($packages.Count -gt 0) "Package '$PackageId' was not found in '$PackageDirectory'."
+    Assert-Condition (
+        $packages.Count -eq 1
+    ) "Expected exactly one package '$PackageId' in '$PackageDirectory'; found $($packages.Count)."
+    $package = $packages[0]
+
+    $archive = [IO.Compression.ZipFile]::OpenRead($package.FullName)
+    try
+    {
+        $entries = @($archive.Entries | ForEach-Object FullName)
+        $nuspecEntries = @($archive.Entries |
+            Where-Object { $_.FullName.EndsWith(".nuspec", [StringComparison]::OrdinalIgnoreCase) })
+        Assert-Condition (
+            $nuspecEntries.Count -eq 1
+        ) "Package '$($package.Name)' must contain exactly one nuspec."
+        $nuspecEntry = $nuspecEntries[0]
+
+        $reader = [IO.StreamReader]::new($nuspecEntry.Open())
+        try
+        {
+            [xml] $nuspec = $reader.ReadToEnd()
+        }
+        finally
+        {
+            $reader.Dispose()
+        }
+    }
+    finally
+    {
+        $archive.Dispose()
+    }
+
+    [PSCustomObject] @{
+        Id = $PackageId
+        Path = $package.FullName
+        Version = [string] $nuspec.package.metadata.version
+        Entries = $entries
+        Dependencies = @($nuspec.SelectNodes("//*[local-name()='dependency']"))
+    }
+}
+
+function Test-PackageContents
+{
+    param(
+        [Parameter(Mandatory = $true)]
+        [PSCustomObject] $Package,
+
+        [Parameter(Mandatory = $true)]
+        [string] $GeneratorAssembly
+    )
+
+    $analyzerPath = "analyzers/dotnet/cs/"
+    $requiredAssemblies = @(
+        $GeneratorAssembly,
+        "Opc.Ua.SourceGeneration.Core.dll",
+        "Opc.Ua.Types.dll",
+        "SourceGenerator.Foundations.Contracts.dll",
+        "SourceGenerator.Foundations.Windows.dll"
+    )
+
+    foreach ($assembly in $requiredAssemblies)
+    {
+        Assert-Condition (
+            $Package.Entries -contains "$analyzerPath$assembly"
+        ) "Package '$($Package.Id)' is missing '$analyzerPath$assembly'."
+    }
+
+    $dllEntries = @($Package.Entries |
+        Where-Object { $_.EndsWith(".dll", [StringComparison]::OrdinalIgnoreCase) })
+    Assert-Condition ($dllEntries.Count -gt 0) "Package '$($Package.Id)' contains no assemblies."
+    Assert-Condition (
+        @($dllEntries | Where-Object { -not $_.StartsWith(
+            $analyzerPath,
+            [StringComparison]::OrdinalIgnoreCase) }).Count -eq 0
+    ) "Package '$($Package.Id)' contains assemblies outside '$analyzerPath'."
+    Assert-Condition (
+        @($dllEntries | Where-Object {
+            [IO.Path]::GetFileName($_).StartsWith(
+                "Microsoft.CodeAnalysis",
+                [StringComparison]::OrdinalIgnoreCase)
+        }).Count -eq 0
+    ) "Package '$($Package.Id)' must not ship Microsoft.CodeAnalysis host assemblies."
+    Assert-Condition (
+        $Package.Dependencies.Count -eq 0
+    ) "Package '$($Package.Id)' must carry its analyzer runtime closure privately."
+}
+
+function Invoke-DotNet
+{
+    param(
+        [Parameter(Mandatory = $true)]
+        [string[]] $Arguments
+    )
+
+    & dotnet @Arguments
+    if ($LASTEXITCODE -ne 0)
+    {
+        throw "dotnet $($Arguments -join ' ') failed with exit code $LASTEXITCODE."
+    }
+}
+
+function Get-MSBuildProperty
+{
+    param(
+        [Parameter(Mandatory = $true)]
+        [string] $ProjectPath,
+
+        [Parameter(Mandatory = $true)]
+        [string] $Configuration,
+
+        [Parameter(Mandatory = $true)]
+        [string] $PropertyName
+    )
+
+    $output = & dotnet msbuild $ProjectPath `
+        "-getProperty:$PropertyName" `
+        "-p:Configuration=$Configuration" `
+        -nologo
+    if ($LASTEXITCODE -ne 0)
+    {
+        throw "Could not read MSBuild property '$PropertyName' from '$ProjectPath'."
+    }
+
+    return [string]($output |
+        Where-Object { -not [string]::IsNullOrWhiteSpace($_) } |
+        Select-Object -Last 1).Trim()
+}
+
+function Test-ConfigurationPackageIds
+{
+    param(
+        [Parameter(Mandatory = $true)]
+        [string] $ProjectPath
+    )
+
+    $releaseId = Get-MSBuildProperty $ProjectPath "Release" "PackageId"
+    $debugId = Get-MSBuildProperty $ProjectPath "Debug" "PackageId"
+    Assert-Condition (
+        $debugId -eq "$releaseId.Debug"
+    ) "Debug package '$debugId' must use the release ID '$releaseId' with a '.Debug' suffix."
+}
+
+function Test-CleanConsumer
+{
+    param(
+        [Parameter(Mandatory = $true)]
+        [PSCustomObject] $Package,
+
+        [Parameter(Mandatory = $true)]
+        [string] $ValidationRoot
+    )
+
+    $consumerName = $Package.Id.Split(".")[-1]
+    $consumerDirectory = Join-Path $ValidationRoot $consumerName
+    New-Item -ItemType Directory -Path $consumerDirectory | Out-Null
+    $projectPath = Join-Path $consumerDirectory "$consumerName.csproj"
+    $expectedDiagnosticSuppression = if ($Package.Id.EndsWith(
+        ".Stack",
+        [StringComparison]::Ordinal))
+    {
+        "    <NoWarn>STACKGEN001</NoWarn>"
+    }
+    else
+    {
+        ""
+    }
+    @"
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+$expectedDiagnosticSuppression
+  </PropertyGroup>
+  <ItemGroup>
+    <PackageReference Include="$($Package.Id)" Version="$($Package.Version)"
+                      PrivateAssets="all" />
+  </ItemGroup>
+</Project>
+"@ | Set-Content -Path $projectPath -Encoding utf8
+    @"
+namespace SourceGeneratorConsumer;
+
+public static class ConsumerMarker
+{
+    public static int Value => 42;
+}
+"@ | Set-Content -Path (Join-Path $consumerDirectory "ConsumerMarker.cs") -Encoding utf8
+
+    $nugetConfig = Join-Path $ValidationRoot "NuGet.Config"
+    $packagesPath = Join-Path $ValidationRoot "packages"
+    Invoke-DotNet @(
+        "restore",
+        $projectPath,
+        "--configfile",
+        $nugetConfig,
+        "--packages",
+        $packagesPath,
+        "--nologo"
+    )
+    Invoke-DotNet @(
+        "build",
+        $projectPath,
+        "--configuration",
+        "Release",
+        "--no-restore",
+        "--nologo"
+    )
+}
+
+Add-Type -AssemblyName System.IO.Compression.FileSystem
+
+$resolvedPackageDirectory = (Resolve-Path $PackageDirectory).Path
+$PackageDirectory = $resolvedPackageDirectory
+$repoRoot = Split-Path $PSScriptRoot -Parent
+$validationRoot = Join-Path (Join-Path $repoRoot "artifacts") "source-generator-consumer"
+Test-ConfigurationPackageIds (
+    Join-Path $repoRoot "tools\Opc.Ua.SourceGeneration\Opc.Ua.SourceGeneration.csproj")
+Test-ConfigurationPackageIds (
+    Join-Path $repoRoot "tools\Opc.Ua.SourceGeneration.Stack\Opc.Ua.SourceGeneration.Stack.csproj")
+$modelPackage = Get-PackageInfo "OPCFoundation.NetStandard.Opc.Ua.SourceGeneration"
+$stackPackage = Get-PackageInfo "OPCFoundation.NetStandard.Opc.Ua.SourceGeneration.Stack"
+
+Test-PackageContents $modelPackage "Opc.Ua.SourceGeneration.dll"
+Test-PackageContents $stackPackage "Opc.Ua.SourceGeneration.Stack.dll"
+
+Remove-Item -Path $validationRoot -Recurse -Force -ErrorAction SilentlyContinue
+New-Item -ItemType Directory -Path $validationRoot | Out-Null
+try
+{
+    "<Project />" | Set-Content -Path (Join-Path $validationRoot "Directory.Build.props") -Encoding utf8
+    "<Project />" | Set-Content -Path (Join-Path $validationRoot "Directory.Build.targets") -Encoding utf8
+    @"
+<Project>
+  <PropertyGroup>
+    <ManagePackageVersionsCentrally>false</ManagePackageVersionsCentrally>
+  </PropertyGroup>
+</Project>
+"@ | Set-Content -Path (Join-Path $validationRoot "Directory.Packages.props") -Encoding utf8
+    $escapedPackageDirectory = [System.Security.SecurityElement]::Escape($PackageDirectory)
+    @"
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <clear />
+    <add key="source-generator-packages" value="$escapedPackageDirectory" />
+  </packageSources>
+</configuration>
+"@ | Set-Content -Path (Join-Path $validationRoot "NuGet.Config") -Encoding utf8
+
+    Test-CleanConsumer $modelPackage $validationRoot
+    Test-CleanConsumer $stackPackage $validationRoot
+}
+finally
+{
+    Remove-Item -Path $validationRoot -Recurse -Force -ErrorAction SilentlyContinue
+}
+
+Write-Host "Validated source-generator package contents and clean consumers."
diff --git a/.github/workflows/preview-publish.yml b/.github/workflows/preview-publish.yml
index f57849648e..4c7c5d820d 100644
--- a/.github/workflows/preview-publish.yml
+++ b/.github/workflows/preview-publish.yml
@@ -119,7 +119,6 @@ jobs:
         shell: pwsh
         run: |
           dotnet restore 'preview-pack.slnx' `
-            --configuration Release `
             --disable-parallel
 
       - name: Build (with optional strong-name signing)
@@ -186,6 +185,12 @@ jobs:
             --configuration Release `
             --output "$env:ARTIFACTS_DIR"
 
+      - name: Validate source generator packages
+        shell: pwsh
+        run: |
+          ./.azurepipelines/validate-source-generator-packages.ps1 `
+            -PackageDirectory "$env:ARTIFACTS_DIR"
+
       - name: Pack NuGet Legacy (nuget/*.nuspec, version from PACK_MODE)
         shell: pwsh
         # Scoped to nuget/ - the MigrationAnalyzer nuspec at tools/Opc.Ua.MigrationAnalyzer/
diff --git a/tools/Opc.Ua.SourceGeneration.Stack/Opc.Ua.SourceGeneration.Stack.csproj b/tools/Opc.Ua.SourceGeneration.Stack/Opc.Ua.SourceGeneration.Stack.csproj
index 288c856525..bd7ef460a7 100644
--- a/tools/Opc.Ua.SourceGeneration.Stack/Opc.Ua.SourceGeneration.Stack.csproj
+++ b/tools/Opc.Ua.SourceGeneration.Stack/Opc.Ua.SourceGeneration.Stack.csproj
@@ -1,7 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
-    <IncludeBuildOutput>false</IncludeBuildOutput>
     <AssemblyName>$(AssemblyPrefix).SourceGeneration.Stack</AssemblyName>
     <RootNamespace>Opc.Ua.SourceGeneration</RootNamespace>
     <Description>OPC UA source generation Library</Description>
@@ -20,6 +19,9 @@
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <NoPackageAnalysis>true</NoPackageAnalysis>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)' == 'Debug'">
+    <PackageId>$(PackageId).Debug</PackageId>
+  </PropertyGroup>
   <PropertyGroup>
     <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
     <AssemblySearchPath_UseOutDir>true</AssemblySearchPath_UseOutDir>
@@ -32,12 +34,13 @@
     <InternalsVisibleTo Include="Opc.Ua.SourceGeneration.Stack.Tests"/>
   </ItemGroup>
   <ItemGroup>
+    <!-- Keep Roslyn compile assets transitive for project-reference test consumers.
+         SourceGeneratorPackaging.targets suppresses package dependencies and host DLL payloads. -->
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" />
     <PackageReference Include="SourceGenerator.Foundations" >
       <!-- Make private asset because assembly name comparer symbol conflict in test -->
       <PrivateAssets>all</PrivateAssets>
-      <OutputItemType>Analzyer</OutputItemType>
-      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
+      <OutputItemType>Analyzer</OutputItemType>
     </PackageReference>
   </ItemGroup>
   <ItemGroup>
@@ -56,4 +59,5 @@
   <ItemGroup>
     <None Include="NugetREADME.md" Pack="true" PackagePath="\" />
   </ItemGroup>
+  <Import Project="..\Opc.Ua.SourceGeneration\SourceGeneratorPackaging.targets" />
 </Project>
diff --git a/tools/Opc.Ua.SourceGeneration/Opc.Ua.SourceGeneration.csproj b/tools/Opc.Ua.SourceGeneration/Opc.Ua.SourceGeneration.csproj
index 77d0003518..4a1eda9a27 100644
--- a/tools/Opc.Ua.SourceGeneration/Opc.Ua.SourceGeneration.csproj
+++ b/tools/Opc.Ua.SourceGeneration/Opc.Ua.SourceGeneration.csproj
@@ -1,7 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
-    <IncludeBuildOutput>false</IncludeBuildOutput>
     <AssemblyName>$(AssemblyPrefix).SourceGeneration</AssemblyName>
     <RootNamespace>Opc.Ua.SourceGeneration</RootNamespace>
     <Description>OPC UA source generation Library</Description>
@@ -20,6 +19,9 @@
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <NoPackageAnalysis>true</NoPackageAnalysis>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)' == 'Debug'">
+    <PackageId>$(PackageId).Debug</PackageId>
+  </PropertyGroup>
   <PropertyGroup>
     <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
     <AssemblySearchPath_UseOutDir>true</AssemblySearchPath_UseOutDir>
@@ -32,12 +34,13 @@
     <InternalsVisibleTo Include="Opc.Ua.SourceGeneration.Tests"/>
   </ItemGroup>
   <ItemGroup>
+    <!-- Keep Roslyn compile assets transitive for project-reference test consumers.
+         SourceGeneratorPackaging.targets suppresses package dependencies and host DLL payloads. -->
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" />
     <PackageReference Include="SourceGenerator.Foundations">
       <!-- Make private asset because assembly name comparer symbol conflict in test -->
       <PrivateAssets>all</PrivateAssets>
-      <OutputItemType>Analzyer</OutputItemType>
-      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
+      <OutputItemType>Analyzer</OutputItemType>
     </PackageReference>
   </ItemGroup>
   <ItemGroup>
@@ -54,5 +57,5 @@
   <ItemGroup>
     <None Include="NugetREADME.md" Pack="true" PackagePath="\" />
   </ItemGroup>
+  <Import Project="SourceGeneratorPackaging.targets" />
 </Project>
-
diff --git a/tools/Opc.Ua.SourceGeneration/SourceGeneratorPackaging.targets b/tools/Opc.Ua.SourceGeneration/SourceGeneratorPackaging.targets
new file mode 100644
index 0000000000..9002af118b
--- /dev/null
+++ b/tools/Opc.Ua.SourceGeneration/SourceGeneratorPackaging.targets
@@ -0,0 +1,38 @@
+<Project>
+  <PropertyGroup>
+    <IncludeBuildOutput>false</IncludeBuildOutput>
+    <!-- The analyzer payload is custom package content, so no build-output symbol package is produced. -->
+    <IncludeSymbols>false</IncludeSymbols>
+    <SuppressDependenciesWhenPacking>true</SuppressDependenciesWhenPacking>
+    <DevelopmentDependency>true</DevelopmentDependency>
+    <TargetsForTfmSpecificContentInPackage>
+      $(TargetsForTfmSpecificContentInPackage);IncludeSourceGeneratorRuntimeAssets
+    </TargetsForTfmSpecificContentInPackage>
+    <IncludeSourceGeneratorRuntimeAssetsDependsOn Condition="'$(NoBuild)' != 'true'">
+      Compile;CopyFilesToOutputDirectory;ResolveReferences
+    </IncludeSourceGeneratorRuntimeAssetsDependsOn>
+  </PropertyGroup>
+  <Target Name="IncludeSourceGeneratorRuntimeAssets"
+          DependsOnTargets="$(IncludeSourceGeneratorRuntimeAssetsDependsOn)">
+    <ItemGroup>
+      <_SourceGeneratorRuntimeAsset Include="@(ReferenceCopyLocalPaths)"
+                                    Condition="'$(NoBuild)' != 'true' AND
+                                      '%(ReferenceCopyLocalPaths.Extension)' == '.dll' AND
+                                      !$([System.String]::Copy('%(Filename)').StartsWith('Microsoft.CodeAnalysis')) AND
+                                      '%(ReferenceCopyLocalPaths.NuGetPackageId)' != 'Microsoft.CodeAnalysis.Common' AND
+                                      '%(ReferenceCopyLocalPaths.NuGetPackageId)' != 'Microsoft.CodeAnalysis.CSharp' AND
+                                      '%(ReferenceCopyLocalPaths.NuGetPackageId)' != 'Microsoft.CodeAnalysis.Workspaces.Common' AND
+                                      '%(ReferenceCopyLocalPaths.NuGetPackageId)' != 'Microsoft.CodeAnalysis.CSharp.Workspaces'" />
+      <!-- Preview no-build packaging reuses the closure copied by the preceding solution build. -->
+      <_SourceGeneratorRuntimeAsset Include="$(TargetDir)*.dll"
+                                    Exclude="$(TargetPath);$(TargetDir)Microsoft.CodeAnalysis*.dll"
+                                    Condition="'$(NoBuild)' == 'true'" />
+      <TfmSpecificPackageFile Include="$(TargetPath)">
+        <PackagePath>analyzers/dotnet/cs/$(TargetFileName)</PackagePath>
+      </TfmSpecificPackageFile>
+      <TfmSpecificPackageFile Include="@(_SourceGeneratorRuntimeAsset)">
+        <PackagePath>analyzers/dotnet/cs/%(_SourceGeneratorRuntimeAsset.Filename)%(_SourceGeneratorRuntimeAsset.Extension)</PackagePath>
+      </TfmSpecificPackageFile>
+    </ItemGroup>
+  </Target>
+</Project>