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, not verified (last probed 2026-10-31); live alternatives: x402engine ElevenLabs Text-to-Speech ($0.02) and Google Gemini 3.1 Flash TTS ($0.0028).

Agents call it through Zero, which pays per call: no API key and no wallet of your own. New accounts start with $5. Live alternatives for the same use case: x402engine ElevenLabs Text-to-Speech ($0.02) · Google Gemini 3.1 Flash TTS ($0.0028).

Converts text to speech using ElevenLabs TTS models, returning a hosted audio URL or streamable raw audio bytes

Price / call$0.03

Seller volume →—

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/speak?utm_source=zero.xyz

When 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.

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