Polygon PoS ยท chain ID 137
Polygon acceleration with network isolation
Polygon uses its own HTTP and WebSocket routes, persisted cache file, cache-key namespace, upstream pool, and chain-identity checks.
Direct edge routes
POST https://rpc-cache-worker.rpc-relay-cache.workers.dev/api/v1/polygon/rpc WSS wss://rpc-cache-worker.rpc-relay-cache.workers.dev/ws/polygon
Identity guarded
eth_chainId must return 0x89 and net_version must return 137. A mismatched upstream response is rejected.
Cache isolated
Every key includes the chain slug and ID. Polygon persists separately from the backward-compatible Ethereum cache.
Freshness visible
Inspect cache status, local proxy time, data age, observed-head age, and canonical-validation age independently.
Install the local accelerator
curl -fsSL https://rpc-relay.pages.dev/install.sh | sh rpc-relay-pro setup --chain polygon rpc-relay-pro doctor # Local endpoint: http://127.0.0.1:8545
What this does not solve
Fast state access is an infrastructure primitive, not a trading signal. Execution needs simulation, signing, slippage and gas limits, inclusion handling, and risk controls outside the read-only MCP surface.
For live decisions, enforce a maximum accepted data age and head lag. A fast stale response should fail the strategy's freshness gate.