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https://github.com/voska/hass-mcp


https://github.com/voska/hass-mcp

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# Hass-MCP

A Model Context Protocol (MCP) server for Home Assistant integration with Claude and other LLMs.

## Overview

Hass-MCP enables AI assistants like Claude to interact directly with your Home Assistant instance, allowing them to:

- Query the state of devices and sensors
- Control lights, switches, and other entities
- Get summaries of your smart home
- Troubleshoot automations and entities
- Search for specific entities
- Create guided conversations for common tasks

## Screenshots

Screenshot 2025-03-16 at 15 48 01
Screenshot 2025-03-16 at 15 50 59
Screenshot 2025-03-16 at 15 49 26

## Features

- **Entity Management**: Get states, control devices, and search for entities
- **Domain Summaries**: Get high-level information about entity types
- **Automation Support**: List and control automations
- **Guided Conversations**: Use prompts for common tasks like creating automations
- **Smart Search**: Find entities by name, type, or state
- **Token Efficiency**: Lean JSON responses to minimize token usage

## Installation

### Prerequisites

- Home Assistant instance with Long-Lived Access Token
- One of the following:
- Docker (recommended)
- Python 3.13+ and [uv](https://github.com/astral-sh/uv)

## Setting Up With Claude Desktop

### Docker Installation (Recommended)

1. Pull the Docker image:

```bash
docker pull voska/hass-mcp:latest
```

2. Add the MCP server to Claude Desktop:

a. Open Claude Desktop and go to Settings
b. Navigate to Developer > Edit Config
c. Add the following configuration to your `claude_desktop_config.json` file:

```json
{
"mcpServers": {
"hass-mcp": {
"command": "docker",
"args": [
"run",
"-i",
"--rm",
"-e",
"HA_URL",
"-e",
"HA_TOKEN",
"voska/hass-mcp"
],
"env": {
"HA_URL": "http://homeassistant.local:8123",
"HA_TOKEN": "YOUR_LONG_LIVED_TOKEN"
}
}
}
}
```

d. Replace `YOUR_LONG_LIVED_TOKEN` with your actual Home Assistant long-lived access token
e. Update the `HA_URL`:

- If running Home Assistant on the same machine: use `http://host.docker.internal:8123` (Docker Desktop on Mac/Windows)
- If running Home Assistant on another machine: use the actual IP or hostname

f. Save the file and restart Claude Desktop

3. The "Hass-MCP" tool should now appear in your Claude Desktop tools menu

> **Note**: If you're running Home Assistant in Docker on the same machine, you may need to add `--network host` to the Docker args for the container to access Home Assistant. Alternatively, use the IP address of your machine instead of `host.docker.internal`.

## Other MCP Clients

### Cursor

1. Go to Cursor Settings > MCP > Add New MCP Server
2. Fill in the form:
- Name: `Hass-MCP`
- Type: `command`
- Command:
```
docker run -i --rm -e HA_URL=http://homeassistant.local:8123 -e HA_TOKEN=YOUR_LONG_LIVED_TOKEN voska/hass-mcp
```
- Replace `YOUR_LONG_LIVED_TOKEN` with your actual Home Assistant token
- Update the HA_URL to match your Home Assistant instance address
3. Click "Add" to save

### Claude Code (CLI)

To use with Claude Code CLI, you can add the MCP server directly using the `mcp add` command:

**Using Docker (recommended):**

```bash
claude mcp add hass-mcp -e HA_URL=http://homeassistant.local:8123 -e HA_TOKEN=YOUR_LONG_LIVED_TOKEN -- docker run -i --rm -e HA_URL -e HA_TOKEN voska/hass-mcp
```

Replace `YOUR_LONG_LIVED_TOKEN` with your actual Home Assistant token and update the HA_URL to match your Home Assistant instance address.

## Usage Examples

Here are some examples of prompts you can use with Claude once Hass-MCP is set up:

- "What's the current state of my living room lights?"
- "Turn off all the lights in the kitchen"
- "List all my sensors that contain temperature data"
- "Give me a summary of my climate entities"
- "Create an automation that turns on the lights at sunset"
- "Help me troubleshoot why my bedroom motion sensor automation isn't working"
- "Search for entities related to my living room"

## Available Tools

Hass-MCP provides several tools for interacting with Home Assistant:

- `get_version`: Get the Home Assistant version
- `get_entity`: Get the state of a specific entity with optional field filtering
- `entity_action`: Perform actions on entities (turn on, off, toggle)
- `list_entities`: Get a list of entities with optional domain filtering and search
- `search_entities_tool`: Search for entities matching a query
- `domain_summary_tool`: Get a summary of a domain's entities
- `list_automations`: Get a list of all automations
- `call_service_tool`: Call any Home Assistant service
- `restart_ha`: Restart Home Assistant
- `get_history`: Get the state history of an entity
- `get_error_log`: Get the Home Assistant error log

## Prompts for Guided Conversations

Hass-MCP includes several prompts for guided conversations:

- `create_automation`: Guide for creating Home Assistant automations based on trigger type
- `debug_automation`: Troubleshooting help for automations that aren't working
- `troubleshoot_entity`: Diagnose issues with entities
- `routine_optimizer`: Analyze usage patterns and suggest optimized routines based on actual behavior
- `automation_health_check`: Review all automations, find conflicts, redundancies, or improvement opportunities
- `entity_naming_consistency`: Audit entity names and suggest standardization improvements
- `dashboard_layout_generator`: Create optimized dashboards based on user preferences and usage patterns

## Available Resources

Hass-MCP provides the following resource endpoints:

- `hass://entities/{entity_id}`: Get the state of a specific entity
- `hass://entities/{entity_id}/detailed`: Get detailed information about an entity with all attributes
- `hass://entities`: List all Home Assistant entities grouped by domain
- `hass://entities/domain/{domain}`: Get a list of entities for a specific domain
- `hass://search/{query}/{limit}`: Search for entities matching a query with custom result limit

## Development

### Running Tests

```bash
uv run pytest tests/
```

## License

[MIT License](LICENSE)