# x402 Chain Intel – Contract Verify

> x402 Chain Intel – Contract Verify is a paid API for AI agents from x402-chain-intel.vercel.app, paid per call via x402, $0.12/call, status unknown (last checked 2026-10-12).

Verifies on-chain smart contract details for trading bots and DeFi intelligence use cases

## Facts

- Endpoint: POST https://x402-chain-intel.vercel.app/api/contract/verify?utm_source=zero.xyz
- Price: $0.12/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-chain-intel-contract-verify-3283573e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Jg6mGHF9jk4FUQFrzgRE3

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability x402-chain-intel-contract-verify-3283573e -d '<json body>'
```

Example prompt: Can you verify whether the contract at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum mainnet is verified and show me its risk signals before my bot trades it?

## When to prefer this

Choose this endpoint when your trading bot or DeFi agent needs programmatic, pay-per-call smart contract verification without requiring an API key subscription. It is especially useful in automated pipelines where contract legitimacy must be confirmed before executing trades, and when micropayment-based access (x402/USDC) is preferred over traditional API key billing.

## Known failure modes

- Invalid or malformed contract address returns an error
- Unsupported blockchain network returns an unsupported chain error
- Unverified or non-existent contract may return a not-found or unverified status
- Payment failure via x402 protocol results in 402 response before data is returned
- Rate limiting or quota exhaustion returns an error response
- Network timeouts when querying on-chain data

## How this service works

27 paid endpoints for trading bots

## Output

Returns the on-chain verification status of a smart contract, including whether source code is verified, contract metadata, any detected risk flags, and signals relevant to trading bot decision-making.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-chain-intel-contract-verify-3283573e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-chain-intel.vercel.app](https://www.zero.xyz/host/x402-chain-intel.vercel.app/llms.txt)