# M2MCent NLP Biometric Optimizer MCP

> M2MCent NLP Biometric Optimizer MCP is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.504444/call, status unknown (last checked 2026-10-10).

Accepts a hash input and returns a boolean prediction, marketed as an NLP biometric optimization node within the M2MCent monetized MCP network.

## Facts

- Endpoint: POST https://api.m2mcent.com/nlp-biometric-optimizer-mcp-438/api/execute?utm_source=zero.xyz
- Price: $0.504444/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/m2mcent-nlp-biometric-optimizer-mcp-e8f8079e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9Kly13W1EOorIcYBAhx5Y

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-nlp-biometric-optimizer-mcp-e8f8079e -d '<json body>'
```

Example prompt: Run this hash '3f4a9b2c1e7d0f8a6b5c4d3e2f1a0b9c' through the NLP biometric optimizer and tell me whether the prediction comes back true or false.

## When to prefer this

Choose this endpoint when you need a simple binary prediction from a hash value in the context of biometric or NLP optimization workflows that support the x402 micropayment protocol on Base L2.

## Known failure modes

- Missing required 'hash' field returns validation error
- Invalid or malformed hash string may return unexpected prediction results
- Payment failure via x402 protocol prevents execution
- Service unavailability across the MCP node returns a 5xx error
- Empty string hash may be rejected or produce unreliable predictions

## 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 indicating whether the input hash passes or fails the biometric optimization model's evaluation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "hash"
 ],
 "properties": {
  "hash": {
   "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/m2mcent-nlp-biometric-optimizer-mcp-e8f8079e/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)