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RPC operator referenceHTTPS · JSON-RPC 2.0

opBNB RPC endpoint

opBNB (chain ID 204) is served over HTTPS POST JSON-RPC 2.0. Full nodes back the endpoint, supporting standard EVM methods. Every plan includes opBNB, including Free.

Network information

NetworkopBNB
Chain ID204
Endpointhttps://rpc.solidrpc.io/YOUR_API_KEY/evm/204
TypeMainnet · L2
Native currencyBNB
Node typesFull
Methodsstandard
ProtocolHTTPS JSON-RPC 2.0 (no WebSocket)

Testing first? opBNB has a testnet on SolidRPC: opBNB Testnet.

Quickstart

Fetch the latest opBNB block number. Replace YOUR_API_KEY with a key from the dashboard, new accounts start on the Free plan, no card required (see getting started):

Request example
curl https://rpc.solidrpc.io/YOUR_API_KEY/evm/204 \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

Standard methods only

opBNB is served by full nodes only, there is no archive state, and trace_* and debug_* methods are not available on this chain. The standard EVM method set works as usual. See the networks page for per-chain coverage.

Limits and errors

Quotas and rate limits are account-wide, not per-chain. Method calls to opBNB draw from the same response-unit quota and rate limit as every other network. Error bodies are identical everywhere; see the error reference.

All networks