# CIEL M2M Contract Audit API

> CIEL M2M Contract Audit API is a paid API for AI agents from 169.58.38.67.sslip.io, paid per call via x402, $0.15/call, status unknown (last checked 2026-09-18).

Performs automated smart contract security auditing, scanning submitted contract code or address for vulnerabilities and risks

## Facts

- Endpoint: POST https://169.58.38.67.sslip.io/api/contract-audit
- Price: $0.15/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ciel-m2m-contract-audit-api-313afe20
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9BI0DdwPBa7fqPyLNGjyB

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 ciel-m2m-contract-audit-api-313afe20 -d '<json body>'
```

Example prompt: Can you audit this Solidity smart contract code for security vulnerabilities before I deploy it? I want to know about any reentrancy attacks, integer overflows, or other critical exploits.

## When to prefer this

Choose this endpoint when you need a fast, pay-per-call smart contract security audit without committing to a full subscription service. It is well-suited for AI agents that need to programmatically check contracts before executing transactions, deployments, or integrations, especially in automated DeFi or Web3 workflows where per-call USDC micropayments via x402 are preferred over monthly billing.

## Known failure modes

- Invalid or malformed contract code returns an error result
- Missing required properties field causes a 400-level error
- Contract too large or complex may timeout or return partial results
- Network or payment authorization failure returns 402 Payment Required
- Non-Solidity or unsupported contract language may return incomplete analysis

## How this service works

50+ micro-services for AI agents: data parsing, crypto analytics, security scanning, code tools, and more. Pay per call via x402 (USDC on Base) or RapidAPI subscription.

## Output

Returns a JSON object containing the audit result, including identified vulnerabilities, severity classifications, affected code sections, and an overall security assessment of the submitted smart contract.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": "data"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ciel-m2m-contract-audit-api-313afe20/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 169.58.38.67.sslip.io](https://www.zero.xyz/host/169.58.38.67.sslip.io/llms.txt)