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ForgeMesh Pro Text-to-Speech
x402
ForgeMesh Pro Text-to-Speech is a paid API for AI agents from tts.forgemesh.io, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Converts text to high-quality WAV audio speech supporting 31 languages, 10 voice options, and adjustable speed and quality settings, billed per call via x402 micropayments.
Price / call$0.003
Success—
StatusUnknown
How this service works
Paid text-to-speech via x402. WAV audio in 31 languages, OpenAI-compatible, no API keys.
Output
Returns a raw WAV audio file (audio/wav) encoded at 44.1kHz 16-bit mono containing the synthesized speech. The audio length depends on the text length and speed parameter.
Example use cases
Multilingual product announcement voiceover
“Generate a spoken WAV audio clip of this product announcement in Spanish using male voice M3 at fast speed and high quality steps of 16: 'Presentamos nuestro nuevo producto revolucionario, disponible ahora en toda Latinoamérica.'”
Podcast intro narration in English
“Turn this intro script into speech with a female voice F1, normal speed 1.0, and ultra quality at 24 steps in English: 'Welcome back to The Future Forward podcast, where we explore ideas that shape tomorrow.'”
Language learning audio flashcard
“Synthesize this Japanese phrase into WAV audio using voice M2, slow speed 0.7, and draft quality at 4 steps so I can hear the pronunciation clearly: '今日はいい天気ですね。'”
Technical details
Endpoint
POSThttps://tts.forgemesh.io/v1/tts/proWhen to prefer
Choose this endpoint when you need multilingual TTS (31 languages) with fine-grained control over voice gender, speech speed, and audio quality without managing API keys — particularly suited for agents using x402 crypto micropayment billing. Prefer it over OpenAI TTS or ElevenLabs when you want OpenAI-compatible semantics with per-call USDC payments and no subscription overhead.
Side effects
- Text exceeds 2000 characters — use the -long route variant instead
- Unsupported language code — only the 31 listed ISO language codes are accepted
- Speed out of range (must be 0.7–2.0) — returns validation error
- Steps out of range (must be 1–100) — returns validation error
- Invalid voice ID — only M1-M5 and F1-F5 are valid
- Payment failure via x402 — call rejected if USDC micropayment is not processed
- Empty or missing text field — synthesis cannot proceed
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 | Standard voice: M1-M5 or F1-F5 |
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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