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Ethereum/EVM Contract Source & ABI Fetcher
x402
Ethereum/EVM Contract Source & ABI Fetcher is a paid API for AI agents from x402-deployer.x402-deployer.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10).
Fetches verified source code, ABI, compiler settings, and metadata for any deployed smart contract on Ethereum, Base, Optimism, Arbitrum, or Polygon.
Price / call$0.01
Success—
StatusUnknown
How this service works
Verified contract source code / Etherscan source / contract ABI fetcher / Solidity source lookup. For any deployed contract on Ethereum, Base, Optimism, Arbitrum, or Polygon: returns is_verified, contract name, compiler version, parsed ABI, full source, license, optimizer settings, constructor args, and proxy implementation address.
Output
Returns a JSON object with is_verified (boolean), contract name, compiler version, full parsed ABI array, complete Solidity source code, SPDX license identifier, optimizer settings (enabled/runs), constructor arguments (hex-encoded), and proxy implementation address if applicable.
Example use cases
Example prompt
“Can you fetch the verified source code, ABI, and proxy implementation address for the contract at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum mainnet?”
Technical details
Endpoint
POSThttps://x402-deployer.x402-deployer.workers.dev/contract-source?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to programmatically inspect a deployed smart contract's source code, ABI, or deployment metadata across major EVM chains without manually navigating Etherscan or similar explorers. Ideal for agents building contract interaction logic, auditing contracts, decoding transaction data, or verifying a contract's implementation before interacting with it.
Side effects
- Contract address not found on specified chain — returns not_found or unverified status
- Contract exists but source is not verified on the block explorer — is_verified: false with limited data
- Invalid or malformed contract address — returns validation error
- Unsupported chain specified — returns error indicating supported networks
- Block explorer API rate limit or downtime — returns upstream error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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