{"uid":"cap_BvGyMgpHqR_ofsIpez3s1","slug":"speraxos-contract-abi-fetcher-625eb148","name":"SperaxOS Contract ABI Fetcher","description":"AI-powered DeFi intelligence APIs payable via the x402 HTTP payment protocol. No API key required — pay per request with USDC on Base. Identity-only (SIWX) endpoints are free for wallets with an agentcash identity.","url":"https://chat.sperax.io/api/x402/tools/contract-explorer/getContractABI?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"chain":{"type":"string","description":"Chain name: ethereum, arbitrum, polygon, base, optimism, avalanche, bsc. Defaults to ethereum."},"address":{"type":"string","description":"EVM contract address (0x…)"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_DM11Z30BLwwzd2lmCM2zG","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0xD74f5255D557944cf7Dd0E45FF521520002D5748","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Retrieves the ABI (Application Binary Interface) for any EVM smart contract on supported chains, payable via x402 micropayment","exampleAgentPrompt":"Can you fetch the ABI for the smart contract at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum so I can see what functions and events it exposes?","exampleUseCases":[{"title":"Inspect DeFi protocol contract interface","prompt":"I need the ABI for the Uniswap V3 pool contract at 0x8ad599c3A0ff1De082011EFDDc58f1908eb6e6D8 on Ethereum — I want to know what functions I can call on it."},{"title":"Build integration with Arbitrum contract","prompt":"Can you pull the ABI for the contract at 0x912CE59144191C1204E64559FE8253a0e49E6548 on Arbitrum? I'm trying to integrate with it and need to know its interface."},{"title":"Debug event logs from Base contract","prompt":"What events does the contract at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base emit? Please fetch its ABI so I can decode the logs I'm seeing."}],"resultDescription":"Returns the full ABI JSON array for the specified smart contract, including all function signatures (name, inputs, outputs, state mutability), event definitions, and error types — enabling programmatic interaction with the contract.","failureModes":["Unverified or unverifiable contract — ABI not available if contract source was not published/verified on the block explorer","Invalid address format — returns error if address is not a valid 0x EVM address","Unsupported chain — returns error if chain name is outside the supported set (ethereum, arbitrum, polygon, base, optimism, avalanche, bsc)","Payment failure — x402 payment rejected or insufficient USDC balance","Proxy contract — may return proxy ABI rather than implementation ABI","Contract not found — address has no deployed contract on specified chain"],"whenToPreferThis":"Use this endpoint when you need to programmatically interact with a smart contract and require its ABI without manually searching block explorers like Etherscan. Ideal for AI agents building DeFi integrations, decoding transaction data, or inspecting contract interfaces on the fly — especially when no API key is available and pay-per-use micropayments via x402 are preferred.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-03T00:48:23.710Z","isFirstParty":false,"canonicalSlug":"speraxos-contract-abi-fetcher-625eb148"}