# M2MCent NLP Voice Synthesis Extractor MCP

> M2MCent NLP Voice Synthesis Extractor MCP is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.808672/call, status unknown (last checked 2026-10-12).

Executes an NLP voice synthesis extraction query against a monetized MCP node, returning a boolean result

## Facts

- Endpoint: POST https://api.m2mcent.com/nlp-voice-synthesis-extractor-mcp-138/api/execute?utm_source=zero.xyz
- Price: $0.808672/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/m2mcent-nlp-voice-synthesis-extractor-mcp-67665a1c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_y1yV544UpSB4u6crZn1e5

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-voice-synthesis-extractor-mcp-67665a1c -d '<json body>'
```

Example prompt: Run this text through the NLP voice synthesis extractor and tell me whether it passes: 'The quick brown fox jumps over the lazy dog.'

## When to prefer this

Use this endpoint when you need a simple pass/fail boolean extraction result from an NLP voice synthesis pipeline and are comfortable with the x402 micropayment model on Base L2. Prefer this over full TTS APIs when you only need a validation or eligibility signal rather than actual audio output.

## Known failure modes

- Missing 'query' field returns 400 validation error
- Empty string query may return false or an error
- Payment failure via x402 results in 402 response blocking execution
- Ambiguous or malformed text may return unexpected false negatives
- No detailed error messages returned due to minimal response schema

## 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 boolean 'result' field indicating whether the query passed the voice synthesis extraction check — true or false with no additional detail or explanation.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/m2mcent-nlp-voice-synthesis-extractor-mcp-67665a1c/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)