Eth contract address x402 REST usage
Predict a contract address before it is deployed — Genesis402 / UnyKorn Operator Network
42 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.
Predict a contract address before it is deployed — Genesis402 / UnyKorn Operator Network
RLP-encode a value or nested list — Genesis402 / UnyKorn Operator Network
Split calldata into its selector and 32-byte words — Genesis402 / UnyKorn Operator Network
Compute the storage slot of a Solidity mapping entry — Genesis402 / UnyKorn Operator Network
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.
Parse and classify an IPv4/IPv6 address (private, loopback, CGNAT, documentation, ...). Canonical and expanded forms, integer and hex values, version, scope per the IANA special-purpose registries (private, loopback, lin...
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...