# M2MCent AI Safety Metadata Simulator MCP Node

> M2MCent AI Safety Metadata Simulator MCP Node is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.290606/call, status unknown (last checked 2026-10-22).

Executes a payload against a monetized MCP node endpoint labeled as an AI safety metadata simulator, returning a boolean status response via x402 micropayment protocol.

## Facts

- Endpoint: POST https://api.m2mcent.com/ai-safety-metadata-simulator-mcp-502/api/execute?utm_source=zero.xyz
- Price: $0.290606/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/m2mcent-ai-safety-metadata-simulator-mcp-node-74953adf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_czKWD-BTn9eDkcsHpWfLq

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 m2mcent-ai-safety-metadata-simulator-mcp-node-74953adf -d '<json body>'
```

Example prompt: Run a simulation using the M2MCent AI safety metadata simulator MCP node with this payload: 'check_safety_constraints_v1' and tell me if it succeeds.

## When to prefer this

Choose this endpoint when you specifically need to interact with the M2MCent monetized MCP node network and can handle micropayment settlement via x402 on Base L2. It is appropriate when you need a simple pass/fail execution result from an AI safety metadata simulation context and are operating in an agent pipeline that already handles x402 USDC payments. Avoid if you need rich structured output, as the response schema is minimal (boolean only).

## Known failure modes

- Payload field missing or malformed — API returns error due to required field validation
- Insufficient USDC balance or x402 payment failure — request rejected before execution
- Endpoint unavailable or subdomain routing failure — connection timeout or 5xx error
- Boolean status returns false with no error detail — execution ran but failed silently
- Rate limiting or node capacity issues across the 205-subdomain network

## 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 containing a single boolean 'status' field indicating whether the execution succeeded (true) or failed (false). No additional output data or detail is provided beyond this pass/fail signal.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/m2mcent-ai-safety-metadata-simulator-mcp-node-74953adf/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)