home-assistant

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---
name: home-assistant
description: Use this if the user wants to connect to Home Assistant or leverage Home Assistant in any shape or form inside their project. Guide users integrating Home Assistant into projects for home automation control or data ingestion. Collects and validates connection credentials (URL and Long-Lived Access Token), provides API reference documentation for Python and Node.js implementations, and helps integrate Home Assistant APIs into user projects.
---

# Home Assistant

## Overview

This skill helps users integrate Home Assistant into their projects, whether to control smart home devices or to ingest sensor data and state information. The skill guides users through connection setup, validates credentials, and provides comprehensive API reference documentation for both Python and Node.js.

## When to Use This Skill

Use this skill when users want to:
- Connect their application to Home Assistant
- Control smart home devices (lights, switches, thermostats, etc.)
- Read sensor data or entity states from Home Assistant
- Automate home control based on custom logic
- Build dashboards or monitoring tools using Home Assistant data
- Integrate Home Assistant into existing Python or Node.js projects

## Connection Setup Workflow

### Step 1: Collect Connection Information

Collect two pieces of information from the user:

1. **Home Assistant URL**: The web address where Home Assistant is accessible
2. **Long-Lived Access Token**: Authentication token for API access

### Step 2: Normalize the URL

If the user provides a URL with a path component (e.g., `http://homeassistant.local:8123/lovelace/dashboard`), normalize it by removing everything after the host and port. The base URL should only include the scheme, host, and port:

- ✓ Correct: `http://homeassistant.local:8123`
- ✗ Incorrect: `http://homeassistant.local:8123/lovelace/dashboard`

### Step 3: Help Users Find Their Token

If users don't know where to find their Long-Lived Access Token, provide these instructions:

1. Log into Home Assistant web interface
2. Click on the user profile (bottom left, user icon or name)
3. Click on the "Security" tab
4. Scroll down to the "Long-Lived Access Tokens" section
5. Click "Create Token"
6. Give the token a name (e.g., "My Project")
7. Copy the generated token (it will only be shown once)

### Step 4: Validate the Connection

Use curl to test the connection and retrieve Home Assistant configuration information.

```bash
curl -X GET \
  -H "Authorization: Bearer <TOKEN>" \
  -H "Content-Type: application/json" \
  <URL>/api/config
```

Example:
```bash
curl -X GET \
  -H "Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..." \
  -H "Content-Type: application/json" \
  http://homeassistant.local:8123/api/config
```

**Success output:**
```json
{
  "location_name": "Home",
  "latitude": 37.7749,
  "longitude": -122.4194,
  "elevation": 0,
  "unit_system": {
    "length": "km",
    "mass": "g",
    "temperature": "°C",
    "volume": "L"
  },
  "time_zone": "America/Los_Angeles",
  "version": "2024.1.0",
  "config_dir": "/config",
  "allowlist_external_dirs": [],
  "allowlist_external_urls": [],
  "components": ["automation", "light", "switch", ...],
  "config_source": "storage"
}
```

**Key information from the response:**
- `version`: Home Assistant version (e.g., "2024.1.0")
- `location_name`: Name of the Home Assistant instance
- `time_zone`: Configured time zone
- `components`: List of loaded components/integrations

**Failure scenarios:**

Authentication failure (401):
```json
{"message": "Invalid authentication"}
```

Connection failure:
```
curl: (7) Failed to connect to homeassistant.local port 8123: Connection refused
```

If authentication fails, verify:
1. The Long-Lived Access Token is correct
2. The token hasn't been deleted or expired
3. The URL is correct (including http/https and port)

### Step 5: Proceed with Implementation

Once the connection is validated, help the user implement their