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Contract Creator Lookup
x402
Contract Creator Lookup is a paid API for AI agents from www.x402financialdata.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).
Returns the deployer address and creation transaction hash for a given Ethereum contract address using Etherscan's V2 API
Price / call$0.01
Success—
StatusUnknown
How this service works
Deployer address and creation transaction for a contract address, from Etherscan's V2 API -- who deployed it and when, pairs naturally with /contract-source. A non-contract or unrecorded address returns found=false rather than an error. $0.01/call.
Output
Returns a JSON object containing a 'found' boolean, the deployer wallet address, and the creation transaction hash. If the address is not a contract or the creation record is not available in Etherscan's database, 'found' is false rather than returning an error.
Example use cases
Audit DeFi protocol origin
“Can you tell me who originally deployed the Uniswap V2 router contract at 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D on Ethereum? I need the deployer wallet and the creation transaction hash.”
Verify NFT contract ownership
“I'm looking at this NFT collection contract 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D — can you find out which wallet deployed it and what transaction created it?”
Due diligence on unknown token
“Before I interact with this token contract at 0x6B175474E89094C44Da98b954EedeAC495271d0F, can you look up who deployed it on Ethereum and when the creation transaction happened?”
Technical details
Endpoint
GEThttps://www.x402financialdata.com/contract-creator/:addressWhen to prefer
Use this endpoint when you need to identify who deployed a specific Ethereum smart contract and obtain the exact creation transaction, especially as a complement to /contract-source for full contract provenance. Prefer this over general blockchain explorers when you need a programmatic, pay-per-call solution without managing API keys. Best suited for due diligence, audit workflows, or enriching contract metadata pipelines.
Side effects
- Address is not a contract (EOA wallet) — returns found=false
- Contract exists but creation record not indexed by Etherscan — returns found=false
- Invalid Ethereum address format — likely 400 error
- Chain parameter set to unsupported network (only 'eth' supported) — error response
- Network timeout or Etherscan API unavailability — upstream error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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