# Web3 Smart Contract Auditor (M2MCent MCP Node #119)

> Web3 Smart Contract Auditor (M2MCent MCP Node #119) is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.372091/call, status unknown (last checked 2026-10-12).

Analyzes audio input and returns a boolean prediction, likely indicating whether audio content relates to or passes a smart contract audit classification.

## Facts

- Endpoint: POST https://api.m2mcent.com/web3-smart-contract-auditor-mcp-119/api/execute?utm_source=zero.xyz
- Price: $0.372091/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/web3-smart-contract-auditor-m2mcent-mcp-node-119-0025a28b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3cfGC80FV_hxvJZleGL44

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 web3-smart-contract-auditor-m2mcent-mcp-node-119-0025a28b -d '<json body>'
```

Example prompt: Can you run this audio recording through the web3 smart contract auditor and tell me whether it passes — just give me a true or false result?

## When to prefer this

Use this endpoint when you need a fast, binary (true/false) classification of audio content in a web3 or smart contract audit context, and you want to pay per-call via gasless USDC on Base L2 without managing subscriptions.

## Known failure modes

- Missing or malformed 'audio' field returns a validation error
- Audio string that cannot be decoded or fetched may cause a processing failure
- Payment failure via x402 protocol results in 402 response before execution
- Large or unsupported audio formats may time out or return unexpected results

## How this service works

The premier global index of 1,069 monetized MCP nodes across 205 specialized subdomains. Gasless USDC runtime settlements via x402 V2 Spec on Base L2. Save 95% token context.

## Output

Returns a JSON object with a single 'prediction' boolean field — true or false — indicating whether the audio input passes or triggers the smart contract audit classification.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "audio"
 ],
 "properties": {
  "audio": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "prediction"
 ],
 "properties": {
  "prediction": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/web3-smart-contract-auditor-m2mcent-mcp-node-119-0025a28b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.m2mcent.com](https://www.zero.xyz/host/api.m2mcent.com/llms.txt)