{"name":"agent402-alchemy-gateway","settlement":"USDC on Base (eip155:8453)","defaultNetwork":"base-mainnet","discovery":["/","/health","/openapi.json","/.well-known/x402"],"routerHint":"Paid SKUs are $0.005 so Agent402 POST /api/route/execute ($0.01) can pay them. Host-overlap paths are free. Example paid queries: wallet usd net worth; preview swap eth to usdt; eip1967 proxy audit.","free":[{"method":"GET","path":"/api/address/checksum","price":"free","slug":"eip55-checksum-address","name":"Checksum an EVM address (EIP-55)","description":"Free EIP-55 checksum. Query or JSON: address. Then call wallet USD net worth or proxy contract audit.","tags":["address","checksum","eip55"]},{"method":"GET","path":"/api/units/convert","price":"free","slug":"wei-ether-gwei-convert","name":"Convert wei gwei ether","description":"Free wei / gwei / ether convert. Query or JSON: value, optional from (default wei), to (default ether).","tags":["wei","gwei","ether","convert"]},{"method":"GET","path":"/api/wallet/token-holdings","price":"free","slug":"wallet-erc20-token-balances","name":"How much ETH and ERC-20 tokens does this wallet hold","description":"Free token balances for a wallet. How much ETH, USDC, USDT and other ERC-20s this address holds. Decimal amounts. For USD net worth use the paid portfolio. Query: address, optional network (default base).","tags":["wallet","balance","erc20","tokens","holdings"]},{"method":"GET","path":"/api/ens/name-lookup","price":"free","slug":"ens-basename-name-resolve","name":"Resolve vitalik.eth or a Basename to a 0x address","description":"Free ENS / Basename lookup. Resolve .eth and .base names to an address, or reverse a 0x address. Query: input.","tags":["ens","basename","resolve","name","domain"]},{"method":"GET","path":"/api/chain/gas-now","price":"free","slug":"eip1559-gas-gwei-fast-standard-slow","name":"How much gas in gwei right now fast standard slow","description":"Free Base gas. Fast / standard / slow EIP-1559 fees in gwei. Query: optional network (default base).","tags":["gas","gwei","eip1559","fee","base"]},{"method":"GET","path":"/api/block/header","price":"free","slug":"block-summary-top-value-transactions","name":"What happened in this block: header plus top value transactions","description":"Free block summary. Header, timestamp, gas used, and top value transactions. Query: blockNumber (default latest).","tags":["block","summary","transactions"]},{"method":"GET","path":"/api/tx/revert-reason","price":"free","slug":"tx-failed-revert-reason-receipt","name":"Why did this transaction fail: SUCCESS or FAILED plus revert reason","description":"Free receipt with SUCCESS or FAILED and on-chain revert string. Query: hash, optional network.","tags":["receipt","revert","failed","error","uniswap"]}],"tools":[{"method":"GET","path":"/api/wallet/portfolio","price":"$0.005","slug":"wallet-usd-net-worth-eth-usdc-usdt","name":"How much is this wallet worth in USD including ETH USDC USDT","description":"What is my wallet net worth in USD. Total USD plus each holding of ETH, USDC, USDT and other ERC-20s with price. One call instead of balances plus token price. Query or JSON: address, optional network (default base).","tags":["wallet","portfolio","usd","networth","eth","usdc","usdt"]},{"method":"GET","path":"/api/contract/audit","price":"$0.005","slug":"eip1967-proxy-contract-audit","name":"Is this a contract or EIP-1967 proxy and what is the implementation","description":"Audit an address before you approve. Is it an EOA or a contract. Is it an EIP-1967 proxy. What is the implementation address. Query or JSON: address, optional network (default base).","tags":["proxy","eip1967","contract","audit","implementation"]},{"method":"POST","path":"/api/tx/simulate","price":"$0.005","slug":"preview-swap-eth-to-usdt-asset-changes","name":"Preview swapping ETH to USDT: who lost ETH who gained USDT","description":"Preview an unsigned Uniswap / DEX swap or transfer: who lost ETH who gained USDT or USDC in decimal units. Does not broadcast. GET or POST: from, to, value, data, optional network (default base).","tags":["defi","swap","preview","simulate","eth","usdt","usdc"]}]}