List an engine's speaker voices
The voices an engine can speak as. Use an id from here as voice.tts.voice (composed engines) or voice.realtime.voice (realtime engines). Sarvam and Gemini publish fixed rosters; the ElevenLabs-backed engines are fetched and cached for an hour, and if ElevenLabs cannot be reached the last good list is returned with stale: true rather than an error.
Authorizations
Your Wixzel Phone API key: Authorization: Bearer wv_live_.... Keys are scoped; grant only what the integration needs.
Path Parameters
"classic"
Response
Available voices
list "classic"
True when the provider could not be reached and this is the last list that was successfully fetched. The endpoint prefers a stale answer to an error, because a provider outage should not break a voice picker.
When the provider list was fetched. Null for engines whose roster is fixed and needs no fetching, such as Sarvam and Gemini.

