Abi function selector x402 REST usage
Function selector from a Solidity signature — Genesis402 / UnyKorn Operator Network
39 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Function selector from a Solidity signature — Genesis402 / UnyKorn Operator Network
ENS namehash and labelhash for a name — Genesis402 / UnyKorn Operator Network
Convert between wei, gwei, ether and token units — Genesis402 / UnyKorn Operator Network
Reference data for a supported EVM chain — Genesis402 / UnyKorn Operator Network
EIP-55 checksum an Ethereum address, and check one — Genesis402 / UnyKorn Operator Network
EIP-712 typed-data digest — Genesis402 / UnyKorn Operator Network
ABI-encode a function call (selector + args) or encode/decode arbitrary ABI types — build and parse EVM calldata correctly.
Runs any read-only contract call (eth_call) with your own calldata and returns the raw result, on five chains, with no API key and no rate limit. The escape hatch for anything the typed endpoints do not cover.
ABI and readable function/event signatures of a verified smart contract from Sourcify, with contract name, compiler, licence, proxy implementation and deployer. Use before calling or decoding a contract.
Fetch the verified ABI for a contract address from Sourcify, plus a ready-to-use list of human-readable function signatures with their 4-byte selectors. Covers 8 EVM mainnets. Unverified contracts return a structured {ve...
Fetch a verified smart-contract's full source, ABI, compiler settings and NatSpec docs for an EVM address, and automatically resolve a proxy to its implementation so the response also carries the implementation ABI. One...
ABI-encode a function call (selector + args) or encode/decode arbitrary ABI types — build and parse EVM calldata correctly.
Pre-sign safety verdict for a raw EVM transaction. Decodes the calldata against a known-signature registry, shows known-pattern effects (approval delta, transfer target), dry-runs eth_call for revert, checks scam-blockli...
Fetch just the ABI of a verified EVM contract, resolving a proxy to its implementation ABI as well. A cheap slice for when you only need the interface to encode calls or decode data, not the full source. Unverified contr...
Base or Ethereum contract address -> ABI and function list: Sourcify verification (exact/partial match), contract name, compiler, ABI, function selectors + signatures, event topics; proxies (EIP-1967, ZeppelinOS, others...