Ankr

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by Ankr

Monad mainnet JSON-RPC paid per call, with no signup or API key.

InfrastructureData

Endpoints · 1

Base URLhttps://x402.rpc.ankr.com
POST/monad_mainnet$0.001Monad mainnet JSON-RPC: send any read method in the request body.

Call the provider directly and settle x402 per request.

Quickstart · x402 flow

1 · Call without payment. The service replies 402

bash
curl -i https://x402.rpc.ankr.com/monad_mainnet \  -H "Content-Type: application/json" \  -d '{"jsonrpc": "2.0", "id": 1, "method": "eth_blockNumber", "params": []}'
Response
HTTP/1.1 402 Payment Required{ "x402Version": 2,  "accepts": [{ "scheme": "exact", "network": "eip155:143",  "asset": "USDC", "maxAmountRequired": "0.001" }] }

2 · Sign the payment with your agent wallet and retry

bash
curl https://x402.rpc.ankr.com/monad_mainnet \  -H "X-PAYMENT: <base64 payment payload signed by your EOA>" \  -H "Content-Type: application/json" \  -d '{"jsonrpc": "2.0", "id": 1, "method": "eth_blockNumber", "params": []}'
Response
HTTP/1.1 200 OK

Any EOA on Monad can pay.

Any APIs or tools listed are provided for discovery purposes only and do not constitute an endorsement or recommendation by the Monad Foundation.