Unnamed resource.

GET https://api.x402node.dev/crypto/selector ↗

Compute the 4-byte function/error selector and full keccak topic from a solidity signature, e.g. transfer(address,uint256). For decoding tx input prefixes and matching event topics. function selector, 4byte, method id, event topic, keccak signature Accepts payment on Base or Solana — either network works.

Eligibility: probeable
Failures: 0
Last quote: —
Last probe: —

Payment requirements / accepts[] 2 options

State	Network	Scheme	Atomic amount	Asset	payTo / untrusted
active	eip155:8453	exact	10000	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	0x4466d4A84b7c49a6A094ec6eef4a0712D6dd125e
active	solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp	exact	10000	EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v	9urRvUx69HqAopg1JGV9P9wR7JdKoztzdkuNyJ8Eo1up

All advertised payment options are stored. Base (`eip155:8453`) is the operational network for ranking and canaries; non-Base options remain visible for transparency.

Probe evidence 0 recent

No probe attempts recorded yet. Coverage runs prioritize never-probed endpoints.

Machine contract

Schemas.

InputJSON

{
  "method": "GET",
  "queryParams": {
    "signature": "string"
  },
  "type": "http"
}

OutputJSON

{}