{"version":"0.1","name":"Gexno Web3 Agent API","description":"Free Ethereum APIs for AI agents: wallet on-chain profile (balance, contract, risk heuristics) and NFT metadata resolver with IPFS HTTP links. No signup. USDC micropayments not required.","openapi":"https://api.gexno.com/api/web3/openapi.json","baseUrl":"https://api.gexno.com","apis":[{"id":"wallet","name":"Wallet on-chain profile and risk heuristics","description":"Look up ETH balance, isContract, txCount, risk for any address","path":"/api/web3/wallet","method":"GET","input":{"address":{"type":"string","description":"0x-prefixed Ethereum address","example":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"}},"output":{"balanceEth":"string","isContract":"boolean","txCount":"number","risk":"ok | new_wallet | contract | eip7702","eip7702":"boolean?","delegation":"string?"}},{"id":"nft","name":"NFT metadata and IPFS image resolver","description":"Normalize ERC-721/1155 metadata and rewrite ipfs:// to HTTP gateway URLs","path":"/api/web3/nft","method":"GET","input":{"contract":{"type":"string","description":"NFT contract 0x address"},"tokenId":{"type":"string","description":"Token ID decimal string"}},"output":{"name":"string|null","imageHttp":"string|null","tokenUriHttp":"string|null","metadata":"object|null"}}]}