# ForgeMesh TTS (x402)

> ForgeMesh TTS (x402) is a paid API for AI agents from x402.forgemesh.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Converts up to 2000 characters of text to natural speech WAV audio using a locally-hosted neural speech engine, billed per call via x402 micropayment.

## Facts

- Endpoint: POST https://x402.forgemesh.io/tts
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/forgemesh-tts-x402-5dbfbe05
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_27Yl8Ocp482a6MiakkTQJ

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 forgemesh-tts-x402-5dbfbe05 -d '<json body>'
```

Example prompt: Read this announcement aloud in a female voice: 'Your appointment has been confirmed for tomorrow at 3pm. Please arrive 10 minutes early.' — give me back the WAV audio.

## When to prefer this

Prefer this endpoint when you need pay-per-call TTS with no API key or subscription setup, especially for voice agents, IVR systems, or low-volume audio content generation where per-call micropayment (x402/USDC) is acceptable. Choose the premium tier at voice.forgemesh.io if you need more than the basic voice set or multilingual support (20 voices, 31 languages).

## Known failure modes

- Text exceeds 2000 character limit — request rejected
- Invalid or unsupported voice ID specified — falls back to default or errors
- x402 payment not provided or insufficient USDC — 402 Payment Required response
- Neural engine unavailable — 5xx service error
- Empty text field — returns error or silence

## How this service works

TTS API paid per call over x402: up to 2000 characters to natural speech (WAV) on our locally-hosted neural speech engine, multiple voices. No keys, no subscription. For voice agents, IVR, audio content. Premium tiers with 20 voices and 31 languages at voice.forgemesh.io.

## Output

A WAV audio file containing natural-sounding speech of the submitted text, rendered by ForgeMesh's locally-hosted neural speech engine using the selected voice (e.g. F1 for female, M1 for male). No API key or subscription required; the call is billed at $0.01 USDC via x402.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "description": "Text to speak, max 2000 chars"
  },
  "voice": {
   "type": "string",
   "description": "Voice id, e.g. F1, M1 (default F1)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "voice": "F1",
  "characters": 38,
  "audio_base64": "UklGRiQAAABXQVZF...",
  "content_type": "audio/wav"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/forgemesh-tts-x402-5dbfbe05/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.forgemesh.io](https://www.zero.xyz/host/x402.forgemesh.io/llms.txt)