{"uid":"cap_LpZuoZfLtHov1aeirHcC_","slug":"nexusapi-crypto-contract-verifier-abe77e0f","name":"NexusAPI Crypto Contract Verifier","description":"Crypto, AI, Social Media, Finance, Weather, Tools & more. Pay per call in USDC on Base. No API keys.","url":"https://nexus-api-peach-nine.vercel.app/api/crypto/contract/verify","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"query":{"type":"string","description":"Search query or input parameter"}}},"responseSchema":{"type":"object","description":"API response data"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.109163","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":"$0.109163/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.109163","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.109163","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_d5c5Wr18aah3JdLWhDQGa","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.109163","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies and validates smart contract code or address authenticity on a blockchain network","exampleAgentPrompt":"Can you verify whether the smart contract at address 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 is legitimate and validated on-chain?","exampleUseCases":[{"title":"DeFi protocol integration safety check","prompt":"Before I connect our app to this new protocol, can you verify if the smart contract at 0x1111111254fb6c44bac0bed2854e76f90643097d is actually legitimate and has verified source code on-chain?"},{"title":"User protection against fake token contracts","prompt":"A user wants to trade this token but I'm not sure if it's real. Can you check if this contract address 0x6B175474E89094C44Da98b954EedeAC495271d0F is verified and authentic on Ethereum?"},{"title":"Bytecode audit before transaction execution","prompt":"I'm about to execute a transaction on this smart contract but want to make sure it's safe. Can you validate that the contract at 0xdAC17F958D2ee523a2206206994597C13D831ec7 matches its published source code and is verified?"}],"resultDescription":"Returns verification status of the smart contract, including whether the contract source code has been verified, contract metadata, and authenticity signals derived from on-chain data.","failureModes":["Invalid or malformed contract address returns error","Contract not found on specified network","Blockchain network unavailable or rate-limited","Query string missing or empty returns 400-level error","Unverified contract returns negative/null verification result"],"whenToPreferThis":"Use this endpoint when an AI agent needs to confirm whether a smart contract address is verified and legitimate before executing transactions, integrating a DeFi protocol, or advising a user on contract safety. Prefer this over general blockchain explorers when a pay-per-call, no-API-key approach is needed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:39:52.168Z","isFirstParty":false}