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refactor: emit compact JSON for outgoing JSON-RPC payloads #3842

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refactor: emit compact JSON for outgoing JSON-RPC payloads #3842

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38e5e09
Emit compact JSON for outgoing JSON-RPC payloads
genisis0x May 14, 2026
c40f5d3
chore: remove unnecessary newsfragment
fubuloubu Aug 31, 2026
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8 changes: 7 additions & 1 deletion web3/_utils/encoding.py
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Original file line number Diff line number Diff line change
Expand Up @@ -206,7 +206,13 @@ def _friendly_json_encode(
self, obj: dict[Any, Any], cls: type[json.JSONEncoder] | None = None
) -> str:
try:
encoded = json.dumps(obj, cls=cls)
# Use the most compact separators. The JSON-RPC spec is
# whitespace-agnostic, every RPC request/response we serialize is
# consumed by another machine, and the default ", "/": " padding
# adds ~2 bytes per dict/list entry across very large payloads
# (e.g. eth_getLogs, batched calls). Saves bandwidth and log
# volume without changing semantics.
encoded = json.dumps(obj, cls=cls, separators=(",", ":"))
return encoded
except TypeError as full_exception:
if hasattr(obj, "items"):
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