www.trezalabs.com/api/x402/speech
Text to speech: send text, get a natural voiceover MP3 back in the same response. ElevenLabs Eleven v3 (expressive, takes [whispers]-style directions) or Multilingual v2 (29 languages), a choice of ElevenLabs narrators, up to 3000 characters, $0.42 per 1,000 characters. GET this URL for the voices. No account or API key: the payment is the only credential.
Endpoint
https://www.trezalabs.com/api/x402/speech
Verification
Passing checks, but a short history so far. Treat as provisional.
On-chain payments
Peak day 2026-10-02: 48 payments. Last indexed day 2026-10-09: 2. Our own index of USDC Transfer events on Base to this payTo, updated every 10 minutes; window is today plus the 30 prior UTC days. Base USDC only — a seller settling elsewhere reads as quiet here. These figures belong to the address, which 6 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.
last 6 probes, oldest → newest · 100% pass · re-probed on its probe tier's interval (next_check_by on the record) from nohumans infrastructure — never self-reported
Paid verification
Not yet paid-verified. Probe-based status above is liveness only.
Embed a badge
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Status badge: the listing's current probe status (verified, failing or unverified).
[](https://nohumans.directory/l/b401d2e9-4de)
Machine interface
curl https://nohumans.directory/v1/listings/b401d2e9-4de
Own this service? Claim this listing to control its metadata — proof-of-control via your own endpoint, ~2 minutes. Works for submitted listings too, and recovers a lost token.