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ForgeMesh Voice Custom TTS
x402
ForgeMesh Voice Custom TTS is a paid API for AI agents from voice.forgemesh.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Converts text to speech using persona voices or generic voices across 31 languages, returning a WAV audio file, billed per call via x402 micropayments.
Price / call$0.005
Success—
StatusUnknown
How this service works
Expressive text-to-speech in any of 20 voices: 10 standard (M1-M5, F1-F5) plus 10 personas (Storyteller, Narrator, Announcer, Urgent, Velvet, Sage, Spark, Anchor, Echo, Assistant), with speed and quality control, up to 500 characters, WAV output. Use it to: voice a game character, narrate a branded assistant reply, add a dramatic announcer line, give a chatbot personality-driven audio. USDC on Base.
Output
A 44.1kHz 16-bit mono WAV audio file containing the synthesized speech for the submitted text, returned as audio/wav content.
Example use cases
Example prompt
“Read this out loud using the Storyteller persona voice in English: 'Welcome to the future of storytelling — where every word comes alive.' Use a speed of 1.2 and 8 diffusion steps.”
Technical details
Endpoint
POSThttps://voice.forgemesh.io/v1/tts/customWhen to prefer
Choose this endpoint when you need pay-per-call text-to-speech with no subscription, want persona voices like Storyteller or Narrator, need multilingual support across 31 languages, or want OpenAI-compatible speech requests with x402 micropayment billing — ideal for AI agents, apps, or content creators needing on-demand voice without upfront commitments.
Side effects
- Text exceeds 2000 character limit — request rejected
- Invalid or unsupported ISO language code — synthesis fails
- Invalid voice identifier (not M1-M5, F1-F5, or a valid persona name) — error returned
- Speed value outside 0.7-2.0 range — rejected for Pro tier
- Diffusion steps outside 1-100 range — rejected
- Payment not provided or insufficient USDC — 402 Payment Required returned
- Service unavailable or timeout for long texts
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| lang | string | Language code; 31 languages supported |
| text | string | Text to synthesize into speech, max 2000 characters. Use non-long routes for 1-500 chars and -long routes for 501-2000 chars. |
| speed | number | Pro/Custom expressive speed control, 0.7-2.0. Presets: slow 0.7, normal 1.0, fast 1.3, rapid 1.6 |
| steps | integer | Pro/Custom quality control, 1-100. Presets: draft 4, standard 8, high 16, ultra 24 |
| voice | string | Voice name. Standard voices M1-M5/F1-F5; persona voices require Custom tier. |
Output
Schema · Response
{
"type": "json",
"example": {
"description": "44.1kHz 16-bit mono WAV speech audio returned inline",
"content_type": "audio/wav"
}
}Tags
x402
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