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ForgeMesh Voice Long-Form Text-to-Speech
x402
ForgeMesh Voice Long-Form Text-to-Speech is a paid API for AI agents from voice.forgemesh.io, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Converts long-form text into spoken audio using persona voices across 31 languages, with pay-per-call x402 micropayment billing and an OpenAI-compatible API shape.
Price / call$0.003
Success—
StatusUnknown
How this service works
OpenAI-compatible text-to-speech endpoint (input, voice, response_format) for drop-in use with existing OpenAI TTS clients, 1 of 10 standard voices, for 501-2000 characters, WAV/FLAC/OGG output. Use it to: voice a longer OpenAI-formatted request without an API key, migrate an existing TTS integration to pay-per-call pricing, synthesize extended text through a familiar request shape. USDC on Base via x402.
Output
An audio file (WAV, FLAC, or OGG) containing the synthesized speech of the provided text, returned as an OpenAI-compatible audio response with the appropriate content-type header.
Example use cases
Example prompt
“Read the following blog post out loud in English using a warm narrator voice and give me the audio as a WAV file: 'Welcome to ForgeMesh. Today we explore how AI agents can speak to the world in 31 languages with just a single API call.'”
Technical details
Endpoint
POSThttps://voice.forgemesh.io/v1/audio/speech-longWhen to prefer
Choose this endpoint when you need long-form text-to-speech synthesis with persona voices, multilingual support (31 languages), and an OpenAI-compatible request shape — especially in agentic workflows where pay-per-call x402 micropayments are preferred over subscription billing.
Side effects
- Payment not included or insufficient USDC — returns 402 Payment Required
- Unsupported response_format value — returns 400 Bad Request
- Text input missing or empty — returns 400 Bad Request
- Requested voice name not found — may return 400 or fall back to default
- Service temporarily unavailable — returns 503
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | string | OpenAI-compatible text input to synthesize, max 2000 characters |
| model | string | Ignored — always uses ForgeMesh Voice |
| voice | string | Standard voice: M1-M5 or F1-F5 |
| response_format | string | Requested audio format |
Output
Schema · Response
{
"type": "json",
"example": {
"description": "OpenAI-compatible inline speech audio response",
"content_type": "audio/wav"
}
}Tags
x402
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