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Contract Creation Lookup – Ethereum Mainnet
x402
Contract Creation Lookup – Ethereum Mainnet is a paid API for AI agents from api.x402node.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Returns the deployer address and deployment transaction for any Ethereum mainnet smart contract, enabling provenance verification before trusting it.
Price / call$0.005
Success—
StatusUnknown
How this service works
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.
Output
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.
Example use cases
Example prompt
“Who deployed the contract at 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 on Ethereum mainnet, and what was the deployment transaction?”
Technical details
Endpoint
GEThttps://api.x402node.dev/chain/contract-creationWhen to prefer
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.
Side effects
- 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
Input
{
"address": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"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"
}Tags
x402
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