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Agent402 Contract Inspect
x402
Agent402 Contract Inspect is a paid API for AI agents from agent402.tools, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Inspects and returns metadata about a smart contract on a specified blockchain, including ABI entries, compiler version, and verification status.
Price / call$0.01
Success—
StatusUnknown
How this service works
Deep contract inspection on any Blockscout-hosted chain (dozens: Ethereum, Base, Polygon, Optimism, Arbitrum, Celo, Gnosis, …): verified source, full ABI, proxy type + implementations, compiler + license metadata - bought per call from Blockscout's Pro API over x402, no API key anywhere in the chain. Richer than contract-source (Sourcify): adds ABI + proxy resolution and far wider chain coverage.
Output
Returns a JSON object containing the contract's name, chain ID, address, compiler version, number of ABI entries, verification status, and a flag indicating whether the content is untrusted.
Example use cases
Verify a DeFi protocol contract
“I just found this contract address 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum — can you check if it's verified, what it's called, and what compiler version was used?”
Audit unfamiliar token contract on Base
“Someone sent me tokens from contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base — can you inspect it and tell me if it's a verified contract and how many ABI entries it exposes?”
Due diligence on a new NFT contract
“Before I interact with this Polygon contract at 0x2953399124F0cBB46d2CbACD364879F3588...can you look up whether it's verified on-chain and show me the compiler version and ABI entry count?”
Technical details
Endpoint
POSThttps://agent402.tools/api/contract-inspectWhen to prefer
Use this endpoint when you need quick, structured metadata about a deployed EVM smart contract — especially verification status, ABI size, and compiler version — without needing to set up a full node or block explorer integration. Ideal for due diligence workflows, agent-driven contract auditing, or enriching on-chain address data. Prefer this over manual block explorer lookups when operating programmatically with pay-per-call pricing and no API key setup.
Side effects
- Unverified or unknown contract address returns isVerified: false with minimal metadata
- Invalid or malformed 0x address returns an error response
- Unsupported chain name or chain ID results in an error
- Contract exists but source code is not publicly verified on the block explorer
- Network timeouts or upstream block explorer unavailability
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | chain name (base, ethereum, polygon, …) or numeric chain id (default base) |
| address | string | contract address (0x…) |
Output
Schema · Response
{
"type": "json",
"example": {
"name": "FiatTokenProxy",
"chain": "8453",
"address": "0x8335…2913",
"compiler": "v0.8.x",
"abiEntries": 12,
"isVerified": true,
"untrustedContent": true
}
}Tags
x402
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