RPC
Check target: `POST web3_clientVersion` (fallback `GET /status`)
Live server-side endpoint checks for RPC, JSON-RPC, EVM-RPC, and P2P connectivity.
Last checked: not yet
Check target: `POST web3_clientVersion` (fallback `GET /status`)
Check target: `POST web3_clientVersion`
Check target: `POST web3_clientVersion`
Server verifies direct node-level TCP connectivity on the P2P endpoint.