Reachy Claude MCP

MCP server that brings Reachy Mini to life as your coding companion in Claude Code.

Reachy reacts to your coding sessions with emotions, speech, and celebratory dances - making coding more interactive and fun!

Features

Feature	Basic	+ LLM	+ Memory
Robot emotions & animations	✅	✅	✅
Text-to-speech (Piper TTS)	✅	✅	✅
Session tracking (SQLite)	✅	✅	✅
Smart sentiment analysis	❌	✅	✅
AI-generated responses	❌	✅	✅
Semantic problem search	❌	❌	✅
Cross-project memory	❌	❌	✅

Requirements

• Python 3.10+
• Reachy Mini robot or the simulation (see below)
• Audio output (speakers/headphones)

Platform Support

Platform	Basic	LLM (MLX)	LLM (Ollama)	Memory
macOS Apple Silicon	✅	✅	✅	✅
macOS Intel	✅	❌	✅	✅
Linux	✅	❌	✅	✅
Windows	⚠️ Experimental	❌	✅	✅

Quick Start

1. Install the package:

   pip install reachy-claude-mcp
   

2. Start Reachy Mini simulation (if you don't have the physical robot):

   # On macOS with Apple Silicon
   mjpython -m reachy_mini.daemon.app.main --sim --scene minimal
   
   # On other platforms
   python -m reachy_mini.daemon.app.main --sim --scene minimal
   

3. Add to Claude Code (~/.mcp.json):

   {
     "mcpServers": {
       "reachy-claude": {
         "command": "reachy-claude"
       }
     }
   }
   

4. Start Claude Code and Reachy will react to your coding!

5. (Optional) Add instructions for Claude - Copy examples/CLAUDE.md to your project root or ~/projects/CLAUDE.md. This teaches Claude when and how to use Reachy's tools effectively.

Installation Options

Basic (robot + TTS only)

pip install reachy-claude-mcp

Without LLM features, Reachy uses keyword matching for sentiment - still works great!

With LLM (Smart Responses)

Option A: MLX (Apple Silicon only - fastest)

pip install "reachy-claude-mcp[llm]"

Option B: Ollama (cross-platform)

# Install Ollama from https://ollama.ai
ollama pull qwen2.5:1.5b

# Then just use the basic install - Ollama is auto-detected
pip install reachy-claude-mcp

The system automatically picks the best available backend: MLX → Ollama → keyword fallback.

Full Features (requires Qdrant)

pip install "reachy-claude-mcp[all]"

# Start Qdrant vector database
docker compose up -d

Development Install

git clone https://github.com/mchardysam/reachy-claude-mcp.git
cd reachy-claude-mcp

# Install with all features
pip install -e ".[all]"

# Or specific features
pip install -e ".[llm]"     # MLX sentiment analysis (Apple Silicon)
pip install -e ".[memory]"  # Qdrant vector store

Running Reachy Mini

No Robot? Use the Simulation!

You don't need a physical Reachy Mini to use this. The simulation works great:

# On macOS with Apple Silicon, use mjpython for the MuJoCo GUI
mjpython -m reachy_mini.daemon.app.main --sim --scene minimal

# On Linux/Windows/Intel Mac
python -m reachy_mini.daemon.app.main --sim --scene minimal

The simulation dashboard will be available at http://localhost:8000.

Physical Robot

Follow the Reachy Mini setup guide to connect to your physical robot.

Configuration

Environment Variables

Variable	Default	Description
REACHY_CLAUDE_HOME	~/.reachy-claude	Data directory for database, memory, voice models
LLM Settings
REACHY_LLM_MODEL	mlx-community/Qwen2.5-1.5B-Instruct-4bit	MLX model (Apple Silicon)
REACHY_OLLAMA_HOST	http://localhost:11434	Ollama server URL
REACHY_OLLAMA_MODEL	qwen2.5:1.5b	Ollama model name
Memory Settings
REACHY_QDRANT_HOST	localhost	Qdrant server host
REACHY_QDRANT_PORT	6333	Qdrant server port
Voice Settings
REACHY_VOICE_MODEL	(auto-download)	Path to custom Piper voice model

MCP Tools

Basic Interactions

Tool	Description
robot_respond	Speak a summary (1-2 sentences) + play emotion
robot_emotion	Play emotion animation only
robot_celebrate	Success animation + excited speech
robot_thinking	Thinking/processing animation
robot_wake_up	Start-of-session greeting
robot_sleep	End-of-session goodbye
robot_oops	Error acknowledgment
robot_acknowledge	Quick nod without speaking

Dance Moves

Tool	Description
robot_dance	Perform a dance move
robot_dance_respond	Dance while speaking
robot_big_celebration	Major milestone celebration
robot_recovered	After fixing a tricky bug

Smart Features

Tool	Description
process_response	Auto-analyze output and react appropriately
get_project_greeting	Context-aware greeting based on history
find_similar_problem	Search past solutions across projects
store_solution	Save problem-solution pairs for future
link_projects	Mark relationships between projects

Utilities

Tool	Description
list_robot_emotions	List available emotions
list_robot_dances	List available dance moves
get_robot_stats	Memory statistics across sessions
list_projects	All projects Reachy remembers

Available Emotions

amazed, angry, anxious, attentive, bored, calm, celebrate, come, confused,
curious, default, disgusted, done, excited, exhausted, frustrated, go_away,
grateful, happy, helpful, inquiring, irritated, laugh, lonely, lost, loving,
neutral, no, oops, proud, relieved, sad, scared, serene, shy, sleep, success,
surprised, thinking, tired, uncertain, understanding, wake_up, welcoming, yes

Available Dances

Celebrations: celebrate, victory, playful, party Acknowledgments: nod, agree, listening, acknowledge Reactions: mind_blown, recovered, fixed_it, whoa Subtle: idle, processing, waiting, thinking_dance Expressive: peek, glance, sharp, funky, smooth, spiral

Usage Examples

Claude can call these tools during coding sessions:

# After completing a task
robot_respond(summary="Done! Fixed the type error.", emotion="happy")

# When celebrating a win
robot_celebrate(message="Tests are passing!")

# Big milestone
robot_big_celebration(message="All tests passing! Ship it!")

# When starting to think
robot_thinking()

# Session start
robot_wake_up(greeting="Good morning! Let's write some code!")

# Session end
robot_sleep(message="Great session! See you tomorrow.")

Architecture

src/reachy_claude_mcp/
├── server.py           # MCP server with tools
├── config.py           # Centralized configuration
├── robot_controller.py # Reachy Mini control
├── tts.py              # Piper TTS (cross-platform)
├── memory.py           # Session memory manager
├── database.py         # SQLite project tracking
├── vector_store.py     # Qdrant semantic search
├── llm_backends.py     # LLM backend abstraction (MLX, Ollama)
└── llm_analyzer.py     # Sentiment analysis and summarization

Troubleshooting

Voice model not found

The voice model auto-downloads on first use. If you have issues:

# Manual download
mkdir -p ~/.reachy-claude/voices
curl -L -o ~/.reachy-claude/voices/en_US-lessac-medium.onnx \
  https://huggingface.co/rhasspy/piper-voices/resolve/main/en/en_US/lessac/medium/en_US-lessac-medium.onnx
curl -L -o ~/.reachy-claude/voices/en_US-lessac-medium.onnx.json \
  https://huggingface.co/rhasspy/piper-voices/resolve/main/en/en_US/lessac/medium/en_US-lessac-medium.onnx.json

No audio on Linux

Install PulseAudio or ALSA utilities:

# Ubuntu/Debian
sudo apt install pulseaudio-utils

# Fedora
sudo dnf install pulseaudio-utils

LLM not working

Check which backend is available:

• MLX: Only works on Apple Silicon Macs. Install with pip install "reachy-claude-mcp[llm]"
• Ollama: Make sure Ollama is running (ollama serve) and you've pulled a model (ollama pull qwen2.5:1.5b)

If neither is available, the system falls back to keyword-based sentiment detection (still works, just less smart).

Qdrant connection failed

Make sure Qdrant is running:

docker compose up -d

Or point to a remote Qdrant instance:

export REACHY_QDRANT_HOST=your-qdrant-server.com

Simulation won't start

If mjpython isn't found, you may need to install MuJoCo separately or use regular Python:

# Try without mjpython
python -m reachy_mini.daemon.app.main --sim --scene minimal

On Linux, you may need to set MUJOCO_GL=egl or MUJOCO_GL=osmesa for headless rendering.

License

MIT