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DexL Agents Text-to-Speech
x402
DexL Agents Text-to-Speech is a paid API for AI agents from agents.dexl.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Converts text (up to 5000 characters) into a WAV audio file using a selectable AI voice, billed per call via x402 with no API key required.
Price / call$0.001
Success—
StatusUnknown
How this service works
Turn text into speech and get a WAV back: eight voices, 24 kHz mono, up to 5000 characters per call. Priced per call with x402, and the quote is a ceiling - pay with the upto scheme and only the audio you actually generated settles.
Output
Returns a binary WAV audio file in a RIFF/WAVE container, encoded as 24 kHz mono PCM, containing the synthesized speech of the provided text in the selected voice.
Example use cases
Podcast intro narration
“Generate a spoken intro for my podcast using the Puck voice — the text is: 'Hello and welcome to The Build Log, the show where we talk to founders about what actually happens behind the scenes. I'm your host, and today's guest built a company from zero to a million users in eighteen months.'”
Accessibility voiceover for article
“Turn this article summary into audio using the Zephyr voice so I can attach it to my newsletter: 'Researchers at MIT have developed a new battery design that charges in under two minutes and retains 90% capacity after 1000 cycles.'”
Alert message audio for monitoring bot
“Synthesize a short warning message using the Fenrir voice that my monitoring bot can play: 'Critical alert — database CPU usage has exceeded 95% for the past five minutes. Immediate action required.'”
Technical details
Endpoint
POSThttps://agents.dexl.io/v1/audio/speechWhen to prefer
Choose this endpoint when you need programmatic text-to-speech with no account registration or API key setup, and you want pay-per-call billing via x402 crypto micropayments. It is ideal for AI agents that need to generate audio on demand without managing subscription credentials, and when a choice of named AI voices and WAV output format is sufficient.
Side effects
- Text exceeds 5000 character limit — request rejected or truncated
- Invalid voice name not in the allowed enum (Kore, Puck, Charon, Fenrir, Aoede, Leda, Orus, Zephyr) — error response
- x402 payment failure or insufficient USDC balance — 402 Payment Required response
- Empty or missing input text field — malformed request error
- Upstream TTS model unavailability — 503 or gateway error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | string | Text to speak, up to 5000 characters. |
| voice | string | One of: Kore, Puck, Charon, Fenrir, Aoede, Leda, Orus, Zephyr. |
Tags
x402
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