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ElevenLabs Text-to-Speech via tokens.fun
x402
ElevenLabs Text-to-Speech via tokens.fun is a paid API for AI agents from eleven.tokens.fun, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-15, last successful call 2026-08-05).
Converts text to speech using ElevenLabs TTS models, returning a hosted audio URL or streamable raw audio bytes
Price / call$0.03
Success—
StatusUnknown
How this service works
ElevenLabs text-to-speech: send text (up to 4000 chars) with optional voice_id, model, format, and speed; get back a hosted audio_url plus size and content type. Send 'Accept: audio/mpeg' to stream raw audio bytes directly instead. Voice catalog with free preview clips at GET /voices (no payment). Priced per character; the 402 amount is computed from your text length.
Output
Returns a JSON object containing a hosted audio_url where the synthesized speech can be accessed or downloaded, along with the file size in bytes and content type. Alternatively, when the Accept: audio/mpeg header is sent, streams raw MP3 audio bytes directly.
Example use cases
Audiobook narration from article
“Take this 800-word article and synthesize it into speech using ElevenLabs — use voice ID 21m00Tcm4TlvDq8ikWAM and the eleven_flash_v2_5 model, give me back a hosted audio URL I can share.”
Podcast intro voiceover
“Generate a voiced intro for my podcast episode using ElevenLabs: 'Today on TechTalks, we dive deep into the future of artificial intelligence.' Use a slightly slower speed of 0.9 and give me back an mp3 link.”
Accessibility audio for web content
“Convert this product description into spoken audio so I can embed it on my website for visually impaired users: 'Our premium noise-cancelling headphones deliver 30 hours of battery life and crystal-clear sound.' Use the default voice and format.”
Technical details
Endpoint
POSThttps://eleven.tokens.fun/speakWhen to prefer
Choose this endpoint when you need high-quality AI voice synthesis powered by ElevenLabs without managing your own ElevenLabs API key, and you want per-call micropayment billing via x402 rather than a subscription. Ideal for agents that occasionally need TTS and want a hosted audio URL returned directly. Use the streaming mode (Accept: audio/mpeg) when you need real-time audio delivery rather than a URL.
Side effects
- 402 Payment Required if x402 payment is not included — amount computed based on character count
- Text exceeds 4000 character limit — request rejected
- Invalid voice_id returns an error from ElevenLabs
- Invalid model ID causes synthesis failure
- Unsupported audio format string causes a bad request error
- Rate limiting or quota issues from underlying ElevenLabs API
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | Text to synthesize into speech. Max 4000 characters. |
| model | string | TTS model id from GET /voices. Optional, default eleven_flash_v2_5. |
| speed | number | Playback speed 0.7-1.2. Optional, default 1. |
| format | string | Output audio format. Optional, default mp3_44100_128. |
| voice_id | string | ElevenLabs voice id from GET /voices. Optional; a default voice is used if omitted. |
Tags
x402
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