{"sample":true,"free":true,"note":"Static example of the paid response shape (not live data). Drop sample=1 and pay via x402 for live data. Failed calls (4xx/5xx) are never charged.","path":"/crypto/eth-rpc","price_usdc":"0.002000","pay_url":"https://kr-x402-mvp.kgy5612.workers.dev/crypto/eth-rpc?method=eth_blockNumber&params=%5B%5D","input_schema":{"type":"object","properties":{"method":{"type":"string","description":"JSON-RPC method (default eth_blockNumber)","examples":["eth_blockNumber","eth_getBalance","eth_call"]},"params":{"type":"string","description":"URL-encoded JSON array of params (default [])","examples":["[]","[\"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045\",\"latest\"]"]}},"additionalProperties":false},"example":{"jsonrpc":"2.0","id":1,"result":"0x16a3f2b","chain":"ethereum","chain_id":1,"upstream":"https://ethereum-rpc.publicnode.com","latency_ms":92},"start_here":"https://kr-x402-mvp.kgy5612.workers.dev/crypto/ping"}