API reference

Every endpoint, with links to the page that documents it.

Every endpoint, with links to the page that documents it in full. The live OpenAPI spec is at https://api.kenpathlabs.com/openapi.json.

Speech

POST/v1/audio/speech

Primary TTS: text in, audio out; set stream for a chunked response. See Text to speech.

POST/v1/text-to-speech/{voice_id}

POST/v1/text-to-speech/{voice_id}/stream

POST/v1/text-to-speech/{voice_id}/with-timestamps

ElevenLabs-compatible synthesis, incl. streaming and character timestamps. output_format like mp3_44100_128, pcm_24000. See SDKs.

WS/v1/audio/speech/stream-input

Native input streaming with mode=eager. Send text fragments, receive PCM. See Input streaming.

WS/v1/text-to-speech/{voice_id}/stream-input

ElevenLabs-compatible realtime WebSocket (BOS/text/flush/EOS protocol).

GET/v1/voices

GET/v2/voices

GET/v1/voices/{voice_id}

GET/v1/voices/{voice_id}/preview

Roster, search/paging, single voice, and bundled preview clip.

GET/v1/voices/{voice_id}/settings

Stub for ElevenLabs SDK compatibility: returns permissive defaults so client flows that read voice settings don’t break.

GET/health

Capability negotiation: engine, stream_formats, default_voice. No auth.

GET/v1/languages

GET/v1/models

Supported languages and models. No auth.

GET/v1/usage

GET/v1/user/subscription

Your plan, balance and month-to-date usage — the second is the ElevenLabs-shaped dialect. See Usage & subscription.