openocto-dev 0.1.0

Open-source personal AI assistant constructor with voice control and persona system

OpenOcto 🐙

Open-source personal AI assistant constructor with voice control and persona system.

Hold [Space] → speak → get a voice response. Fully local audio processing. Your voice never leaves the device. Wake word detection ("Hey Hestia") coming in Phase 2.

Features

• Push-to-talk voice input (hold Space)
• Local STT via whisper.cpp — auto-detects language (30+ languages supported)
• Local TTS via piper-tts — natural voices in English, Spanish, French, and more
• Pluggable AI backends — Claude (native API), Claude Max Proxy (use your subscription), OpenAI, and any OpenAI-compatible provider
• Persona system — character, voice, and system prompt as a single package
• Cross-platform: macOS, Linux, Windows

Quick Start

One command to install, configure, and download models:

macOS / Linux:

curl -sSL https://raw.githubusercontent.com/openocto-dev/openocto/main/scripts/install.sh | bash

Windows (PowerShell):

irm https://raw.githubusercontent.com/openocto-dev/openocto/main/scripts/install.ps1 | iex

Already cloned the repo? Same script works locally:

./scripts/install.sh           # macOS / Linux
.\scripts\install.ps1          # Windows

The installer automatically detects whether you're inside the project or need to clone it, then:

1. Creates a virtual environment and installs dependencies
2. Launches the setup wizard — choose AI backend, enter API key, download models

After setup:

openocto start

macOS: If prompted, grant microphone access and Accessibility permissions to your terminal app (System Settings → Privacy & Security).

Usage

🐙 OpenOcto v0.1.0 | Persona: Octo | AI: claude
   Hold [Space] to speak, [Ctrl+C] to quit

You [en]: What's the capital of France?
Octo: The capital of France is Paris.

You [en]: What's the weather like in Tokyo?
Octo: I don't have access to real-time weather data, but you can check weather.com or ask me anything else.

CLI Commands

openocto start                        # start assistant (auto-selects user if only one)
openocto start --user Dmitry          # start as a specific user (skips prompt)
openocto start --persona octo         # specify persona
openocto start --ai claude-proxy      # use Claude subscription (via proxy)
openocto start --ai openai            # use OpenAI
openocto setup                        # re-run the setup wizard
openocto config show                  # show resolved configuration
openocto --version

Multi-user

If multiple users are set up, openocto start will prompt you to choose:

👤 Multiple users — who are you?
  1. Dmitry (last active)
  2. Anna

Enter number [1]:

To skip the prompt, pass --user:

openocto start --user Anna

Each user has their own conversation history per persona.

Requirements

• Python 3.10+
• macOS (Apple Silicon or Intel), Linux, or Windows
• Microphone and speakers

Configuration

OpenOcto looks for configuration in this order:

1. config/default.yaml (built-in defaults)
2. ~/.openocto/config.yaml (your overrides — created by openocto setup)
3. Environment variables (${ANTHROPIC_API_KEY}, etc.)
4. CLI flags

Example ~/.openocto/config.yaml:

persona: "octo"

ai:
  default_backend: "claude"
  claude:
    model: "claude-opus-4-6"

stt:
  model_size: "medium"    # better accuracy on Apple Silicon M4

tts:
  models:
    en: "en_US-amy-medium"

AI Backends

Backend	Config key	API Key	Notes
Claude (Anthropic API)	claude	ANTHROPIC_API_KEY	Native SDK, default
Claude Max Proxy	claude-proxy	Not needed	Uses Claude subscription
OpenAI	openai	OPENAI_API_KEY	OpenAI-compatible
Z.AI	zai	ZAI_API_KEY	OpenAI-compatible

Claude Max Proxy (use your Claude subscription)

If you have a Claude Pro/Max subscription, you can use it instead of an API key:

# Install and start the proxy (requires Claude Code CLI to be authenticated)
npx claude-max-proxy

# In another terminal
openocto start --ai claude-proxy

The proxy runs at http://localhost:3456/v1 and bridges OpenAI-format requests through your authenticated Claude session.

Adding custom providers

Any OpenAI-compatible provider can be added in ~/.openocto/config.yaml:

ai:
  default_backend: "gemini"
  providers:
    gemini:
      api_key: "${GEMINI_API_KEY}"
      model: "gemini-2.5-pro"
      base_url: "https://generativelanguage.googleapis.com/v1beta/openai"

    deepseek:
      api_key: "${DEEPSEEK_API_KEY}"
      model: "deepseek-chat"
      base_url: "https://api.deepseek.com/v1"

    ollama:
      model: "llama3:8b"
      base_url: "http://localhost:11434/v1"
      no_auth: true    # local services don't need an API key

Whisper Models

Model	Size	Speed (M2)	Accuracy
tiny	75MB	Very fast	Low
base	142MB	Fast	Medium
small	466MB	~2s/10s audio	Good (default)
medium	1.5GB	~3s/10s audio	High

Personas

Personas live in the personas/ directory. Each persona is a folder with:

personas/
└── octo/
    ├── persona.yaml       # name, voice config, personality
    └── system_prompt.md   # instructions for the AI

Creating a Custom Persona

# personas/mypersona/persona.yaml
name: "mypersona"
display_name: "My Persona"
description: "My custom assistant"

voice:
  engine: "piper"
  models:
    en: "en_US-amy-medium"
  length_scale: 1.0

personality:
  tone: "friendly"        # warm, professional, playful, serious
  verbosity: "balanced"   # brief, balanced, detailed
  formality: "informal"   # formal, informal, casual

<!-- personas/mypersona/system_prompt.md -->
You are [Name], a helpful assistant.
Always respond in the same language the user speaks.
Keep responses concise — they will be spoken aloud.

openocto start --persona mypersona

Testing the Microphone

openocto test mic

Development

pip install -e ".[dev]"
python -m pytest tests/ -v

Project Structure

openocto/
├── openocto/
│   ├── app.py              # Main orchestrator
│   ├── config.py           # Configuration loader (Pydantic)
│   ├── setup_wizard.py     # Interactive setup wizard
│   ├── event_bus.py        # Async pub/sub
│   ├── state_machine.py    # Pipeline state machine
│   ├── audio/              # Capture and playback
│   ├── stt/                # Speech-to-Text (whisper.cpp)
│   ├── tts/                # Text-to-Speech (piper-tts)
│   ├── vad/                # Voice Activity Detection (Silero)
│   ├── ai/                 # AI backends (Claude, OpenAI-compat)
│   ├── persona/            # Persona loader
│   └── utils/              # Model downloader, keyboard listener
├── personas/octo/          # Default persona
├── config/default.yaml     # Default configuration
├── scripts/
│   ├── install.sh          # macOS/Linux installer
│   └── install.ps1         # Windows installer
├── tests/                  # Unit tests
└── pyproject.toml

Brand

"OpenOcto" name, logo, mascot, and persona character designs are trademarks and copyrighted works of the OpenOcto project author. All character artwork © 2026 OpenOcto Contributors. All rights reserved. See BRAND.md for usage guidelines.

License

Business Source License 1.1 — free for personal and non-commercial use. Converts to Apache 2.0 on 2030-03-30.

Website: openocto.dev Author: Rocket Dev Maintainer: Dmitry Rman (@Dmitry-rman)