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@framers/agentos-ext-voice-synthesis

v2.0.1

Published

Voice synthesis and transcription tools for AgentOS via OpenAI, ElevenLabs, Deepgram, and local Ollama/Whisper-compatible runtimes

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Links

Git

Maintainers

manicteammanicteamjdunnfivejdunnfive

Keywords

agentosextensionttssttvoicetranscriptionopenaielevenlabsdeepgramollamawhisperspeechmedia

Readme

Voice Synthesis Extension for AgentOS

Voice input/output tools for AgentOS:

  • text_to_speech via OpenAI, ElevenLabs, or a local Ollama-compatible runtime
  • speech_to_text via OpenAI Whisper, Deepgram, or Whisper-local/OpenAI-compatible local STT runtimes

Installation

npm install @framers/agentos-ext-voice-synthesis

Configuration

Set one or more of the following environment variables, or pass them via extension options:

  • OPENAI_API_KEY
  • ELEVENLABS_API_KEY
  • DEEPGRAM_API_KEY
  • OLLAMA_BASE_URL for a local OpenAI-compatible TTS runtime
  • WHISPER_LOCAL_BASE_URL for a local OpenAI-compatible STT runtime
  • TTS_PROVIDER to prefer openai, elevenlabs, ollama, or auto
  • STT_PROVIDER to prefer openai, deepgram, whisper-local, or auto
  • OPENAI_BASE_URL for OpenAI-compatible speech endpoints

Tool: text_to_speech

Input:

  • text (string, required) — Text to convert, max 5000 chars
  • provider (string, optional) — openai, elevenlabs, ollama, or auto
  • voice (string, optional) — OpenAI: alloy, echo, fable, onyx, nova, shimmer; ElevenLabs: rachel, domi, bella, antoni, josh, arnold, adam, sam
  • model (string, optional) — OpenAI: tts-1, tts-1-hd; ElevenLabs: eleven_monolingual_v1, eleven_multilingual_v2
  • speed (number, OpenAI only) — 0.25 to 4.0
  • stability (number, ElevenLabs only) — 0 to 1
  • similarity_boost (number, ElevenLabs only) — 0 to 1
  • format (string) — mp3, opus, aac, flac, wav

Output: Base64-encoded audio, provider metadata, and a duration estimate.

Provider selection

The tool prefers providers in this order when provider is omitted:

  1. OpenAI, if OPENAI_API_KEY is set
  2. ElevenLabs, if ELEVENLABS_API_KEY is set
  3. Ollama-compatible local runtime as a best-effort fallback

Ollama support is experimental and assumes an OpenAI-compatible TTS endpoint at /v1/audio/speech.

Tool: speech_to_text

Providers:

  • openai — hosted Whisper via OPENAI_API_KEY
  • deepgram — hosted Deepgram STT via DEEPGRAM_API_KEY
  • whisper-local — local OpenAI-compatible transcription endpoint via WHISPER_LOCAL_BASE_URL
  • auto — prefers OpenAI, then Deepgram, then explicitly configured local STT

Input:

  • audioBase64 (string) — Base64 audio payload, optionally as a data: URL
  • audioUrl (string) — Fetchable audio URL
  • provider (string, optional) — auto, openai, deepgram, or whisper-local
  • mimeType (string, optional) — For example audio/wav
  • fileName (string, optional) — File name sent to the provider
  • format (string, optional) — Audio format hint such as wav, mp3, m4a, webm
  • language (string, optional) — ISO language hint
  • prompt (string, optional) — Context prompt to bias transcription
  • model (string, optional) — Provider model override such as whisper-1, nova-2, or base
  • temperature (number, optional) — Whisper temperature override
  • responseFormat (string, optional) — json, text, srt, verbose_json, or vtt
  • diarize (boolean, optional) — Enable speaker diarization where supported
  • utterances (boolean, optional) — Request utterance segmentation where supported
  • smartFormat (boolean, optional) — Enable provider-side formatting where supported
  • detectLanguage (boolean, optional) — Enable provider-side language detection where supported

Output: Transcribed text, provider/model metadata, language, optional confidence, duration, and optional segments.

whisper-local targets OpenAI-compatible local transcription servers. That keeps the tool contract stable even when you swap between hosted Whisper, Deepgram, and local runtimes behind the same API shape.

License

MIT - Frame.dev