Eth message hash x402 REST usage
EIP-191 digest of a message (what personal_sign actually signs) — Genesis402 / UnyKorn Operator Network
194 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.
EIP-191 digest of a message (what personal_sign actually signs) — Genesis402 / UnyKorn Operator Network
Event topic0 from a Solidity event signature — Genesis402 / UnyKorn Operator Network
DNS lookup: A, AAAA, MX, TXT, NS, CNAME, CAA, SOA, SRV via public resolvers — Genesis402 / UnyKorn Operator Network
Pad hex to a fixed byte width — Genesis402 / UnyKorn Operator Network
Live status and details of a transaction by hash: success/failed/pending, from/to, value (wei + ether), nonce, block number, gas used, effective gas price and any created contract address. Returns `found:false` for unkno...
NFT owner and metadata link for an ERC721 token on Ethereum, Base, Arc or BNB Chain: the current owner, the collection name and symbol, and the tokenURI (with an IPFS gateway link when it is ipfs://). A token that does n...
Transaction receipt and status on Ethereum: success / failed / pending / not found, block, confirmations, from, to, value, gas used and fee, via eth_getTransactionReceipt.
Current EIP-1559 gas fees for Ethereum, Base, Arbitrum, Optimism or Polygon: next base fee, slow/standard/fast priority and max fee in gwei, block utilisation and the cost of a plain transfer (L2 L1-data fees excluded)....
Resolve an ENS name (e.g. vitalik.eth) to its Ethereum address - so an agent can turn a human-readable recipient into a payable address. Read-only on Ethereum mainnet.
List a wallet's native ETH and USDC balances with human-readable amounts. Canonical wallet-balance contract for autonomous agents: address plus optional CAIP-2 chain.
Ethereum mainnet JSON-RPC from an independently operated full node. One call per payment, no account or API key. Serves eth_, net_ and web3_ methods. Blocks, transactions, receipts and logs from the Merge (block 15537394...
Multi-chain EVM gas price oracle for AI agents — 17 chains (Ethereum, Base, Arbitrum, Optimism, Polygon, BNB, Avalanche…). One x402 call returns slow/standard/fast EIP-1559 tiers as DROP-IN maxFeePerGas + maxPriorityFeeP...
ABI-decode return data against declared types — Genesis402 / UnyKorn Operator Network
ABI-encode a list of typed parameters — Genesis402 / UnyKorn Operator Network
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