{"uid":"cap_8hFTMnfY0eexTxA0tX9SP","slug":"contract-owner-lookup-a513020e","name":"Contract Owner Lookup","description":"Reads who controls a contract straight from chain: owner/getOwner/admin, pending owner, EIP-1967 proxy implementation + admin, and paused state — and whether the owner is a single EOA key (one compromise = total control) or a contract (multisig/timelock). Crucially: ownership 'renounced' is NOT safe if it is still an upgradeable proxy whose admin can swap the logic. The control-surface read before you trust a contract. Not financial advice.","url":"https://402.com.tr/api/x402/contract-owner?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"},"pathParams":{"type":"object"},"queryParams":{"type":"object","required":["address"],"properties":{"address":{"type":"string","description":"Contract address"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.03","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":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_tRMn0IWOJZh13SOud60c1","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Reads a smart contract's ownership structure from chain, including owner/admin addresses, proxy implementation, upgrade admin, paused state, and whether the owner is an EOA or multisig/timelock.","exampleAgentPrompt":"Who actually controls the contract at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 — is the owner a single wallet or a multisig, is it upgradeable, and who controls the proxy admin?","exampleUseCases":[{"title":"Pre-investment contract safety check","prompt":"Before I ape into this protocol, check who owns the contract at 0x6B175474E89094C44Da98b954EedeAC495271d0F — is it a single EOA that could rug, or a multisig/timelock? And is it an upgradeable proxy?"},{"title":"DeFi protocol governance audit","prompt":"I need to audit the ownership of 0xc3d688B66703497DAA19211EEdff47f25384cdc3 — tell me who the owner is, who the proxy admin is, whether there's a pending owner transfer, and if the contract is currently paused."},{"title":"Renounced ownership risk verification","prompt":"The team says they renounced ownership on contract 0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984, but is it actually safe? Check if it's still an upgradeable proxy with an admin that could swap the logic."}],"resultDescription":"Returns the owner address, pending owner (if any), proxy implementation and admin addresses (EIP-1967), paused state, and a classification of whether the owner is an EOA (single key, high risk) or a contract (multisig/timelock). Includes flags for upgrade risk and whether a renounced-ownership claim is actually safe given proxy upgradeability.","failureModes":["Invalid or non-checksummed contract address returns an error","Address is an EOA (not a contract) — no ownership data available","Contract does not implement any standard ownership interface — partial or empty results","RPC/node timeout for high-traffic chains — retry recommended","Contract uses a non-standard or obfuscated ownership pattern that isn't detected"],"whenToPreferThis":"Use this endpoint when you need to quickly assess the real control surface of a smart contract before trusting it with funds or governance decisions. It is purpose-built for the specific combination of owner detection, proxy admin resolution, EOA-vs-contract classification, and paused-state checking that a manual review would require multiple separate calls to achieve. Prefer this over generic blockchain explorers when you need a structured, machine-readable risk summary rather than raw on-chain data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:44:40.383Z","isFirstParty":false,"canonicalSlug":"contract-owner-lookup-a513020e"}