402 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.
NFT metadata for ERC-721 and ERC-1155 tokens on Base, Polygon, Arbitrum, Optimism and Ethereum. Resolves tokenURI through IPFS, Arweave, data: URIs and public HTTPS, and returns the parsed metadata JSON.
Heuristic risk flags for a Base contract from free public data: Sourcify verification, upgradeable proxy + admin, owner type, mint/pause/blacklist/fee selectors, bytecode size. Not an audit or financial advice.
Explain a Base transaction: status, fee, decoded method + args (openchain signature DB), and ERC-20 transfers with symbols and human amounts.
Fetch the verified ABI for a contract address from an open verified-contract repository, plus a ready-to-use list of human-readable function signatures with their 4-byte selectors. Covers 8 EVM mainnets. Unverified contr...
EVM address checksum and validation — check an Ethereum/Base address format before sending funds.
Live feed of freshly-detected malicious addresses on Base — address-poisoning seeders caught via zero-value transfer sprays, updated continuously by our on-chain collector. Poll ?since=<unix> to ingest only new threats i...
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)....
Use when an agent has to decide whether a wallet can pay before building a transaction: the native coin balance (ETH, MATIC...) of any address on Base, Ethereum, Polygon, Arbitrum or Optimism, returned both as wei (exact...
Anchor a 32-byte hash to Base + Solana mainnet — $0.005 USDC
Tokens seen most recently. PulseChain (chain id 369). $0.003 USDC per call.
Native coin and ERC-20 token balance for any wallet address on Base, Polygon, Arbitrum, Optimism or Ethereum. Returns raw and human-decimal amounts in one call.
Payment flow verification for agents integrating x402: confirms your wallet and payment channel work before you spend on a real endpoint. Category: infra.
How many of one ERC-1155 token id an account holds, read straight from the contract. ERC-1155 is the multi-token standard behind most game items, editions and passes, where a single contract holds many ids and a balance...
Escape hatch for power users: forward an arbitrary read-only JSON-RPC method to the chain. Method must be in our read-only whitelist (eth_call, eth_getLogs, eth_getBlockByNumber, eth_getTransactionReceipt, eth_chainId, e...
Contract ABI, verified contract. The verified ABI of a smart contract on Ethereum, Base, Arbitrum, Optimism or Polygon from Sourcify's open verification repository: contract name, compiler, match quality, every function...
Preliminary, limited EVM mechanism evidence from a block-pinned snapshot: matched source syntax, proxy and token state, and optional V2 pool observations. Unknowns remain unknown; not a security audit or sellability verd...
Gas price on Base and Ethereum in ONE call (legacy gas price + EIP-1559 priority fee, wei and gwei) — Genesis402 / UnyKorn Operator Network
Heuristic risk flags for a Ethereum contract from free public data: Sourcify verification, upgradeable proxy + admin, owner type, mint/pause/blacklist/fee selectors, bytecode size. Not an audit or financial advice.
Inspect any BNB Smart Chain address: EOA vs contract vs EIP-7702 delegated, BNB balance, nonce, proxy implementation (EIP-1967/1167/zos), and ERC-20 name/symbol/decimals/supply.
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...
Explain a Ethereum transaction: status, fee, decoded method + args (openchain signature DB), and ERC-20 transfers with symbols and human amounts.
Explain a BNB Smart Chain transaction: status, fee, decoded method + args (openchain signature DB), and ERC-20 transfers with symbols and human amounts.
Wallet snapshot across Base, Ethereum and BNB Smart Chain: native balance plus balances of 8 major tokens per chain (USDC, USDT, WETH, DAI, WBTC/cbBTC...). No USD pricing.
EVM address checksum and validation — check an Ethereum/Base address format before sending funds.