NAIF FixGraph · RPC Doctor

RPC response is missing eth_chainId

The endpoint does not return the expected chain identifier in the diagnostic response.

Aggregate badge appears at 5+ consented samples

Problem signature

chainId missing

Likely causes

Method blocked by provider policy
Non-EVM endpoint or incompatible proxy
Malformed or partial JSON-RPC response

What to check first

Call eth_chainId as a single request
Verify the endpoint belongs to the intended EVM chain
Check provider allowlists and proxy transforms

Test yours freeGet the bounded fix · from 29 USDC

This page is curated technical guidance, not a claim about any specific user's system. Diagnosis-derived trend badges are shown only after at least 5 consented, sanitized samples.