Model Context Protocol Server for Home Assistant

Forked from tevonsb/homeassistant-mcp

A powerful bridge between your Home Assistant instance and Language Learning Models (LLMs), enabling natural language control and monitoring of your smart home devices through the Model Context Protocol (MCP). This server provides a comprehensive API for managing your entire Home Assistant ecosystem, from device control to system administration.

Table of Contents

• Key Features
• Prerequisites
• Installation
  • Basic Setup
  • Docker Setup (Recommended)
• Configuration
• Development
• API Reference
  • Device Control
  • Add-on Management
  • Package Management
  • Automation Management
• Natural Language Integration
• Troubleshooting
• Project Status
• Contributing
• Resources
• License

Key Features

Core Functionality 🎮

• Smart Device Control
  • 💡 Lights: Brightness, color temperature, RGB color
  • 🌡️ Climate: Temperature, HVAC modes, fan modes, humidity
  • 🚪 Covers: Position and tilt control
  • 🔌 Switches: On/off control
  • 🚨 Sensors & Contacts: State monitoring
  • 🎵 Media Players: Playback control, volume, source selection
  • 🌪️ Fans: Speed, oscillation, direction
  • 🔒 Locks: Lock/unlock control
  • 🧹 Vacuums: Start, stop, return to base
  • 📹 Cameras: Motion detection, snapshots

System Management 🛠️

• Add-on Management

  • Browse available add-ons
  • Install/uninstall add-ons
  • Start/stop/restart add-ons
  • Version management
  • Configuration access

• Package Management (HACS)

  • Integration with Home Assistant Community Store
  • Multiple package types support:
    • Custom integrations
    • Frontend themes
    • Python scripts
    • AppDaemon apps
    • NetDaemon apps
  • Version control and updates
  • Repository management

• Automation Management

  • Create and edit automations
  • Advanced configuration options:
    • Multiple trigger types
    • Complex conditions
    • Action sequences
    • Execution modes
  • Duplicate and modify existing automations
  • Enable/disable automation rules
  • Trigger automation manually

Architecture Features 🏗️

• Intelligent Organization

  • Area and floor-based device grouping
  • State monitoring and querying
  • Smart context awareness
  • Historical data access

• Robust Architecture

  • Comprehensive error handling
  • State validation
  • Secure API integration
  • TypeScript type safety
  • Extensive test coverage

Prerequisites

• Node.js 20.10.0 or higher
• NPM package manager
• Docker Compose for containerization
• Running Home Assistant instance
• Home Assistant long-lived access token (How to get token)
• HACS installed for package management features
• Supervisor access for add-on management

Installation

Basic Setup

# Clone the repository
git clone https://github.com/jango-blockchained/homeassistant-mcp.git
cd homeassistant-mcp

# Install dependencies
npm install

# Build the project
npm run build

Docker Setup (Recommended)

1. Clone and prepare:

   git clone -b docker https://github.com/jango-blockchained/homeassistant-mcp.git
   cd homeassistant-mcp
   cp .env.example .env
   

2. Configure environment .env file:

   # Home Assistant Configuration
   HASS_HOST=http://homeassistant.local:8123
   HASS_TOKEN=your_home_assistant_token
   HASS_SOCKET_URL=ws://homeassistant.local:8123/api/websocket
   
   # Server Configuration
   PORT=3000
   NODE_ENV=production
   

3. Launch with Docker Compose:

   docker-compose up -d
   

API Reference

Device Control

Common Entity Controls

{
  "tool": "control",
  "command": "turn_on",  // or "turn_off", "toggle"
  "entity_id": "light.living_room"
}

Light Control

{
  "tool": "control",
  "command": "turn_on",
  "entity_id": "light.living_room",
  "brightness": 128,
  "color_temp": 4000,
  "rgb_color": [255, 0, 0]
}

Add-on Management

List Available Add-ons

{
  "tool": "addon",
  "action": "list"
}

Install Add-on

{
  "tool": "addon",
  "action": "install",
  "slug": "core_configurator",
  "version": "5.6.0"
}

Manage Add-on State

{
  "tool": "addon",
  "action": "start",  // or "stop", "restart"
  "slug": "core_configurator"
}

Package Management

List HACS Packages

{
  "tool": "package",
  "action": "list",
  "category": "integration"  // or "plugin", "theme", "python_script", "appdaemon", "netdaemon"
}

Install Package

{
  "tool": "package",
  "action": "install",
  "category": "integration",
  "repository": "hacs/integration",
  "version": "1.32.0"
}

Automation Management

Create Automation

{
  "tool": "automation_config",
  "action": "create",
  "config": {
    "alias": "Motion Light",
    "description": "Turn on light when motion detected",
    "mode": "single",
    "trigger": [
      {
        "platform": "state",
        "entity_id": "binary_sensor.motion",
        "to": "on"
      }
    ],
    "action": [
      {
        "service": "light.turn_on",
        "target": {
          "entity_id": "light.living_room"
        }
      }
    ]
  }
}

Duplicate Automation

{
  "tool": "automation_config",
  "action": "duplicate",
  "automation_id": "automation.motion_light"
}

Development

# Development mode with hot reload
npm run dev

# Build project
npm run build

# Production mode
npm run start

# Run tests
npx jest --config=jest.config.cjs

# Run tests with coverage
npx jest --coverage

# Lint code
npm run lint

# Format code
npm run format

Troubleshooting

Common Issues

1. Node.js Version (toSorted is not a function)

   • Solution: Update to Node.js 20.10.0+

   nvm install 20.10.0
   nvm use 20.10.0
   

2. Connection Issues

   • Verify Home Assistant is running
   • Check HASS_HOST accessibility
   • Validate token permissions
   • Ensure WebSocket connection for real-time updates

3. Add-on Management Issues

   • Verify Supervisor access
   • Check add-on compatibility
   • Validate system resources

4. HACS Integration Issues

   • Verify HACS installation
   • Check HACS integration status
   • Validate repository access

5. Automation Issues

   • Verify entity availability
   • Check trigger conditions
   • Validate service calls
   • Monitor execution logs

Project Status

✅ Complete

• Entity, Floor, and Area access
• Device control (Lights, Climate, Covers, Switches, Contacts)
• Add-on management system
• Package management through HACS
• Advanced automation configuration
• Basic state management
• Error handling and validation
• Docker containerization
• Jest testing setup
• TypeScript integration
• Environment variable management
• Home Assistant API integration
• Project documentation

🚧 In Progress

• WebSocket implementation for real-time updates
• Enhanced security features
• Tool organization optimization
• Performance optimization
• Resource context integration
• API documentation generation
• Multi-platform desktop integration
• Advanced error recovery
• Custom prompt testing
• Enhanced macOS integration
• Type safety improvements
• Testing coverage expansion

Contributing

1. Fork the repository
2. Create a feature branch
3. Implement your changes
4. Add tests for new functionality
5. Ensure all tests pass
6. Submit a pull request

Resources

• MCP Documentation
• Home Assistant Docs
• HA REST API
• HACS Documentation
• TypeScript Documentation

License

MIT License - See LICENSE file