{"uid":"cap_pnkkb4q-IgraeF8s_GCcl","slug":"evm-contract-owner-lookup-35b2fe43","name":"EVM Contract Owner Lookup","description":"Who owns an Ownable contract — Genesis402 / UnyKorn Operator Network","url":"https://twin.unykorn.org/contract-owner?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"params":{"type":"object","properties":{"chain":{"enum":["ethereum","base","polygon","arbitrum","optimism","bsc","avalanche","gnosis","linea","scroll"],"type":"string"},"contract":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$"}}}}},"responseSchema":{"type":"json","example":{"ok":true,"type":"contract-owner","receipt":{"tx_hash":"0x<64hex>","amount_usd":0.002,"receipt_id":"g402-<16hex>"},"generated_at":"<iso8601>"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_wC0LzSa8H9OvvisvRB8mj","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the owner address of an Ownable smart contract on a specified EVM-compatible chain","exampleAgentPrompt":"Who is the owner of the contract at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum? Use the UnyKorn contract-owner lookup.","exampleUseCases":[{"title":"Verify NFT collection contract ownership","prompt":"Can you check who owns the contract at 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13d on Ethereum? I want to confirm the current owner before interacting with it."},{"title":"Audit DeFi protocol admin key","prompt":"Look up the owner of 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D on Ethereum — I need to know which address controls this Uniswap router contract for a security audit."},{"title":"Cross-chain ownership check on Base","prompt":"Who owns the contract at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base? I'm trying to figure out if the team still controls it or if ownership was renounced."}],"resultDescription":"Returns a JSON object with ok status, the owner address of the specified Ownable contract, and a payment receipt including transaction hash, USD amount charged, and a unique receipt ID.","failureModes":["Contract address is not a valid 0x-prefixed 40-hex address — input validation error","Contract does not implement the Ownable interface — call may revert or return empty","Unsupported chain specified — only the ten enumerated chains are accepted","Network RPC timeout or node unavailability — transient failure","Payment failure via x402 protocol — call not executed"],"whenToPreferThis":"Use this endpoint when you need a quick, pay-per-call lookup of the owner() function on any Ownable smart contract across ten major EVM chains without running your own node. Prefer this over rolling your own RPC call when operating in an agentic pipeline that already uses x402 micropayments, or when you need multi-chain coverage (Ethereum, Base, Polygon, Arbitrum, Optimism, BSC, Avalanche, Gnosis, Linea, Scroll) without managing separate RPC endpoints.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T18:55:39.321Z","isFirstParty":false,"canonicalSlug":"evm-contract-owner-lookup-35b2fe43"}