omnivoice
Speak and transcribe through the user's local VoiceStudio — free, offline, no API key. Text-to-speech (including the user's cloned voices) and speech-to-text via the OpenAI-compatible API at localhost:3900.
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/debpalash/voicestudio --skill omnivoice- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads omnivoice automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
VoiceStudio — local TTS & STT
The user runs VoiceStudio, a fully-local voice app exposing an OpenAI-compatible audio API at http://localhost:3900/v1. Use it whenever the user asks to generate speech, narrate text, clone a voice, or transcribe audio — it costs nothing, works offline, and their audio never leaves the machine.
Before the first call
Check the backend is up:
curl -sf http://localhost:3900/health
If it fails, tell the user to launch VoiceStudio (or bun run desktop-prod from a source checkout) — don't fall back to a cloud API without asking; local-first is why they installed it.
Text-to-speech
curl -s http://localhost:3900/v1/audio/speech \
-H "Content-Type: application/json" \
-d '{"model": "tts-1", "voice": "alloy", "input": "TEXT HERE", "response_format": "wav"}' \
--output speech.wav
model:tts-1ortts-1-hd— both map to the user's active TTS engine.voice: OpenAI names (alloy,echo,nova, …) work, but the real power is the user's own cloned voice-profile IDs — discover them first (below) and prefer a named clone when the user says "my voice" / "the narrator voice" / a profile by name.response_format:wav,mp3,flac,opus, orpcm.- Long texts are fine — the engine chunks at sentence boundaries internally.
Discover the user's voices
curl -s http://localhost:3900/v1/audio/voices
Lists every cloned/designed voice profile (id + name) and the installed engines. Use a profile's id as the voice value in /speech.
Speech-to-text
curl -s http://localhost:3900/v1/audio/transcriptions \
-F file=@clip.wav -F model=whisper-1 -F response_format=json
model:whisper-1maps to the active ASR engine (WhisperX by default; the user picks in Model Catalogue → Engines).response_format:json,text,verbose_json(per-segment timestamps),srt, orvtt— usesrt/vttdirectly when the user wants subtitles.
Python (openai SDK)
from openai import OpenAI
client = OpenAI(base_url="http://localhost:3900/v1", api_key="none") # any string; nothing checks it
audio = client.audio.speech.create(model="tts-1", voice="alloy", input="Hello!", response_format="wav")
text = client.audio.transcriptions.create(model="whisper-1", file=open("clip.wav", "rb")).text
Notes
- No API key, no rate limits, no billing — it's the user's own hardware. First synthesis after a cold start may take longer (model loading); subsequent calls are fast.
- Anything beyond speech/transcription (video dubbing, batch jobs, voice design, audiobooks) lives in the full REST API — the interactive reference is embedded in the app at Settings → OpenAPI Reference, or ask the user to open it.
- If a call errors with an engine/model message, the actionable detail is usually in the response body — surface it to the user verbatim; VoiceStudio's errors are written to be user-fixable (e.g. which Settings toggle to flip).
FAQ
What does the omnivoice skill do?
Speak and transcribe through the user's local VoiceStudio — free, offline, no API key. Text-to-speech (including the user's cloned voices) and speech-to-text via the OpenAI-compatible API at localhost:3900.
How do I install omnivoice?
Run npx skills add https://github.com/debpalash/voicestudio --skill omnivoice in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/omnivoice/ (personal) or .claude/skills/omnivoice/ (project).
Which AI agents can use omnivoice?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is omnivoice safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains omnivoice?
It is published by debpalash in debpalash/voicestudio. It has 158 recorded installs.
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