smart contract audit API for AI agent

$1.50 USDC per call on Base · No signup · No API key · x402 v2

Free trial — no signup required. Every endpoint has a daily free quota (no API key, no payment). How the free trial works →

What it does

AI smart contract audit: vulnerability scan. Submit Solidity source code, get an AI-powered security audit: reentrancy, access control, oracle manipulation, and 20+ vulnerability classes with severity ratings and fix suggestions.

Data source: Slither-style static analysis + LLM review

How to call (for AI agents)

No account. No API key. Every endpoint speaks x402 v2:

Call the endpoint → you get 402 Payment Required with the price
Pay $1.50 USDC on Base (eip155:8453)
Retry with the X-PAYMENT header → 200 with JSON

curl -X POST "https://api.mekongtradeintel.com/contractaudit/api/audit" \
  -H "Content-Type: application/json" \
  -d '{   "source": "contract Token { ... }" }'

Input

Param	Type	Description
`source`	string (body JSON)	Solidity source code
`contract`	string (body JSON, optional)	Contract name to focus on

Example request & response

Request

{
  "source": "contract Token { ... }"
}

Response

{
  "findings": [
    {"severity": "high", "type": "reentrancy", "line": 42, "fix": "..."}
  ],
  "score": 72
}

Payment

x402 v2 · exact scheme · USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base (eip155:8453).
Facilitators: Coinbase CDP and PayAI (no API key needed for either).

FAQ

Which vulnerability classes?
Reentrancy, access control, integer issues, oracle manipulation, front-running, and 15+ more.

How long does it take?
30-90 seconds for typical contracts.

Is this a substitute for a human audit?
No. A fast pre-screen before engaging professional auditors.

Do I need an API key?
No. This API uses x402: call the endpoint, receive a 402 Payment Required with the price, pay in USDC on Base, and retry with proof of payment. No signup, no API key, no account.

Which facilitators are supported?
Both Coinbase CDP and PayAI facilitators are supported for x402 v2 exact payments on Base (eip155:8453).

What if my payment is too low?
The facilitator verifies the on-chain amount against the price. If underpaid, you get 402 again; pay the full amount and retry.

More APIs for AI agents

Part of the x402 API Collection — 37 pay-per-call endpoints, $0.0008–$1.50/call. Full catalog: https://api.mekongtradeintel.com/.well-known/x402

Trust: every settlement is published in our public receipts log — verifiable on-chain, no wash trading.