{"uid":"cap_uwKS8xQF6voX1Mq8SFNBL","slug":"contract-creation-lookup-ethereum-mainnet-465ba8d2","name":"Contract Creation Lookup – Ethereum Mainnet","description":"Find who deployed a contract and in which transaction on Ethereum mainnet - lets agents verify a contract's deployer and origin before trusting it, provenance data LLMs cannot look up. contract creator, who deployed, contract deployer, deployment tx, contract origin, contract provenance Accepts payment on Base or Solana — either network works.","url":"https://api.x402node.dev/chain/contract-creation","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":["address"],"properties":{"chain":{"type":"string","description":"ethereum (default; only chain supported on free tier)"},"address":{"type":"string","description":"Contract address (required)"}}}},"additionalProperties":false}}},"responseSchema":null,"example":{"request":{"address":"0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2"},"response":{"note":"Contract deployer and creation tx. Agents can verify if deployer is a known/trusted entity before interacting.","_hint":"x402 paid endpoints for AI agents — x402node.dev (utilities) · cn402.com (Chinese culture)","chain":"ethereum","source":"etherscan","address":"0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2","creator":"0x4f26ffbe5f04ed43630fdc30a87638d53d0b0876","creationTxHash":"0xb95343413e459a0f97461812111254163ae53467855c0d73e0f1e7c5b8442fa3"}},"exampleRequest":{"address":"0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2"},"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_m18kqf55EInrTL4Tc8YJM","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the deployer address and deployment transaction for any Ethereum mainnet smart contract, enabling provenance verification before trusting it.","exampleAgentPrompt":"Who deployed the contract at 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 on Ethereum mainnet, and what was the deployment transaction?","exampleUseCases":null,"resultDescription":"Returns the deployer wallet address and the deployment transaction hash for the specified Ethereum contract, allowing agents to verify who created the contract and in which transaction it was originally deployed.","failureModes":["Invalid or non-existent contract address returns an error or empty result","Address is an EOA (not a contract), returning no creation data","Network issues or node unavailability causing timeout","Payment failure (insufficient USDC balance) blocking the request"],"whenToPreferThis":"Use this endpoint when an agent needs to verify the provenance or trustworthiness of an Ethereum mainnet smart contract by identifying its deployer and deployment transaction — especially useful for DeFi due diligence, security checks, or any workflow where knowing who deployed a contract is critical before interacting with it.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:49:44.279Z","isFirstParty":false}