# WalletGuard AI Smart Contract Security Audit

> WalletGuard AI Smart Contract Security Audit is a paid API for AI agents from walletguard.ai, paid per call via x402, $29/call, status unknown (last checked 2026-10-16).

Submits an EVM smart contract address for an AI-powered comprehensive security audit and returns an audit job ID with access token

## Facts

- Endpoint: POST https://walletguard.ai/api/x402/audit/standard?utm_source=zero.xyz
- Price: $29/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/walletguard-ai-smart-contract-security-audit-24d8562b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rh1Sjb8INTfOGnSAfDjBi

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 walletguard-ai-smart-contract-security-audit-24d8562b -d '<json body>'
```

Example prompt: Can you run a full AI security audit on the smart contract at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum (chain ID 1)? I want to know if it has any vulnerabilities before I interact with it.

## When to prefer this

Use this endpoint when you need a comprehensive AI-powered security audit of an EVM-compatible smart contract and are willing to pay $29 USDC per audit. Prefer this over free tools when you need a detailed, structured audit report with a verifiable badge, or when auditing unverified contracts by supplying raw Solidity source code. Best for pre-investment due diligence, developer security reviews, or when integrating audit verification into automated workflows.

## Known failure modes

- Invalid or malformed contract address returns a 400 error
- Unsupported chain ID returns a validation error
- Payment failure due to insufficient USDC balance prevents job creation
- Contract not found on-chain and no sourceCode provided causes audit failure
- Rate limiting or service unavailability returns 429 or 503

## How this service works

Paste any smart contract address and get a comprehensive AI-powered security audit. Free wallet health checks, developer APIs, and verification badges.

## Output

Returns a JSON object with a processing status of 'processing', a unique auditId to poll for results, an accessToken to retrieve the completed audit report, and the paymentTxHash confirming the $29 USDC payment was processed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "chainId",
  "contractAddress"
 ],
 "properties": {
  "force": {
   "type": "boolean",
   "description": "Force fresh scan, bypass cache"
  },
  "chainId": {
   "type": "number",
   "description": "EVM chain ID (1=Ethereum, 8453=Base, 42161=Arbitrum, 137=Polygon, 10=Optimism)"
  },
  "sourceCode": {
   "type": "string",
   "description": "Raw Solidity source (for unverified contracts)"
  },
  "contractAddress": {
   "type": "string",
   "description": "Contract address (0x...)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "status": {
   "enum": [
    "processing"
   ],
   "type": "string"
  },
  "auditId": {
   "type": "string"
  },
  "accessToken": {
   "type": "string"
  },
  "paymentTxHash": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/walletguard-ai-smart-contract-security-audit-24d8562b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from walletguard.ai](https://www.zero.xyz/host/walletguard.ai/llms.txt)