{"uid":"cap_jNpHw348mENyGarSoN5gJ","slug":"canaryguard-contract-info-inspector-9bff3025","name":"CanaryGuard Contract Info Inspector","description":"Inspects Base EVM smart contract bytecode size, EIP-1967/UUPS proxy implementation slots, EIP-7702 delegation designators, and verified function selectors.","url":"https://canaryguard-402.onrender.com/v1/contract-info?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["contract_address"],"properties":{"chain_id":{"type":"integer","default":8453},"contract_address":{"type":"string","description":"Smart contract address on Base (0x...)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_IUtMNvqGgtqLeYBzlYkxX","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Inspects Base EVM smart contract bytecode size, EIP-1967/UUPS proxy implementation slots, EIP-7702 delegation designators, and verified function selectors for a given contract address.","exampleAgentPrompt":"Can you inspect the Base smart contract at 0x4200000000000000000000000000000000000010 and tell me if it's a proxy, what the implementation address is, its bytecode size, and what function selectors are verified?","exampleUseCases":[{"title":"Proxy implementation discovery","prompt":"I need to find out what implementation contract is behind the proxy at 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913 on Base — check its EIP-1967 and UUPS proxy slots for me."},{"title":"EIP-7702 delegation check","prompt":"Can you check whether the contract at 0x000000000022D473030F116dDEE9F6B43aC78BA3 on Base has an EIP-7702 delegation designator set?"},{"title":"Smart contract function selector audit","prompt":"Pull up the verified function selectors for the contract at 0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD on Base so I can see what methods it exposes."}],"resultDescription":"Returns structured data about the target Base smart contract including: raw bytecode size in bytes, EIP-1967 and UUPS proxy implementation slot values (resolved implementation addresses if present), EIP-7702 delegation designator information, and a list of verified function selectors with their human-readable signatures where available.","failureModes":["Invalid or malformed contract address returns a validation error","Address is an EOA (non-contract) with no bytecode — returns empty or zero bytecode size","Contract not deployed on Base (chain_id 8453) returns not-found or empty response","Rate limit or payment failure returns 402 Payment Required","RPC timeout or Base network congestion may cause slow or failed responses"],"whenToPreferThis":"Use this endpoint when you need to programmatically determine whether a Base contract is a proxy (EIP-1967 transparent, UUPS, or EIP-7702 delegation), resolve its underlying implementation address, audit its bytecode footprint, or retrieve verified function selectors — especially in DeFi security workflows, contract auditing pipelines, or agent workflows that interact with unknown contracts on Base.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T12:39:02.666Z","isFirstParty":false,"canonicalSlug":"canaryguard-contract-info-inspector-9bff3025"}