Pending review — not for sale

Speech

AI text-to-speech — turn text into natural studio-grade audio, pay per clip in USDC or EURC.

Pending review as of 2026-10-30: retired from the fleet on 2026-10-28 and its vhost removed, so GET /health cannot complete a TLS handshake (tls_no_certificate, probed 2026-10-30T23:10Z). Nothing is for sale until a review brings it back.

What it is planned to do

Nothing here is callable today. This is the operation the review would put back on sale; the price would be measured from its handshake on the day it returns.

Operation

POST /speech/synthesize — inference, async latency
Synthesize speech from text on the qwen-audio-3.0-tts-plus model. Billed on the Exclusive tier, per clip. Returns an audio_id immediately; poll /speech/status/{audio_id} then download /speech/audio/{audio_id} (both free).

Endpoint

https://speech.x402.press/speech/synthesize

Workflows

speech_synthesize — Turn text into audio: POST /speech/synthesize (paid) → poll GET /speech/status/{audio_id} (free) until status is completed → GET /speech/audio/{audio_id} (free) for the clip

Free endpoints

No payment, no key — the parts a client needs before it decides to pay.

GET /speech/voices — List available voices with characteristics and accepted formats/ranges
GET /speech/status/{audio_id} — Poll a synthesis: synthesizing | completed | failed (with error) | not_found
GET /speech/audio/{audio_id} — Download a completed clip — free, retained 2 hours
GET /speech/feedback — Return the 50 most recent feedback entries
POST /speech/feedback — Submit feedback (response_id, rating 1-5, optional comment)
GET /.well-known/x402.json — machine manifest
GET /llms.txt — the same offer, written for a model
GET /health — liveness

For an agent

/services/speech/llms.txt — this page as text: price, operation, free endpoints
/services/speech.json — the same data, structured, derived from catalog.json
/catalog.json — every service, every paid operation, every chain price
/.well-known/x402.json (service) — the service's own manifest, the authority on its endpoints