# CIEL M2M API TTS (Text-to-Speech)

> CIEL M2M API TTS (Text-to-Speech) is a paid API for AI agents from 169.58.38.67.sslip.io, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-18).

Converts input text into synthesized speech audio via a pay-per-call micro-service endpoint on the CIEL M2M API Marketplace.

## Facts

- Endpoint: GET https://169.58.38.67.sslip.io/api/tts
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ciel-m2m-api-tts-text-to-speech-61d21693
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eBIFlOaFHmqrJf1iEORhx

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 ciel-m2m-api-tts-text-to-speech-61d21693
```

Example prompt: Can you convert the following text into spoken audio for me: 'Welcome to our platform, we are glad to have you here'?

## When to prefer this

Choose this endpoint when you need a lightweight, pay-per-call TTS service accessible without a long-term subscription, especially in agentic or M2M workflows where USDC micropayments via x402 are already integrated. Prefer this over heavyweight TTS SDKs when you want low-friction, per-call billing with no monthly commitment.

## Known failure modes

- Empty or missing text input returns an error or empty result
- Malformed input schema causes a 400-level error
- Payment failure via x402/USDC results in a 402 Payment Required response
- Rate limiting or quota exceeded returns a 429 error
- Server-side TTS engine unavailability returns a 500 error
- Very long text inputs may be truncated or rejected

## How this service works

50+ micro-services for AI agents: data parsing, crypto analytics, security scanning, code tools, and more. Pay per call via x402 (USDC on Base) or RapidAPI subscription.

## Output

Returns a JSON response containing the synthesized speech result — likely audio data, a URL to the generated audio file, or a base64-encoded audio payload representing the spoken version of the input text.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": "data"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ciel-m2m-api-tts-text-to-speech-61d21693/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 169.58.38.67.sslip.io](https://www.zero.xyz/host/169.58.38.67.sslip.io/llms.txt)