Bring Smart Home
to Cursor
Create your Vinkius account to connect Home Assistant to Cursor and start using all 15 AI tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code. No hosting, no server setup — just connect and start using.
GDPR Free for SubscribersCompatible with every major AI agent and IDE
Gemini
What is the Home Assistant MCP Server?
Connect to your Home Assistant instance (local or Nabu Casa cloud) and control your entire smart home from any AI agent. Manage lights, climate, media players, covers, switches, and trigger automations via the Home Assistant REST API.
What you can do
- Entity Discovery — List all entities and their current states across all integrations
- Device Control — Turn lights on/off, adjust brightness, set thermostat temperatures, open/close covers
- Service Calls — Call any Home Assistant service (light, switch, climate, cover, media_player, automation, script)
- State Monitoring — Get real-time state of any entity including sensors, binary sensors, and device trackers
- History & Logbook — Query historical state changes and logbook entries for analysis
- Calendar Management — List and query calendar events from Home Assistant calendars
- Event Automation — Fire custom events to trigger Home Assistant automations
- Template Rendering — Render Jinja2 templates for advanced state access
- Configuration — View system configuration, loaded components, and validate configuration
- Local or Cloud — Works with local instances (http://IP:8123) or Nabu Casa cloud (https://INSTANCE.ui.nabu.casa)
How it works
- Subscribe to this server
- Enter your Home Assistant URL and Long-Lived Access Token
- Start controlling your smart home from Claude, Cursor, or any MCP-compatible client
Your AI becomes a smart home assistant, helping you manage lighting, climate, media, and automations across your entire home.
Who is this for?
- Smart Home Enthusiasts — control all Home Assistant-connected devices from AI assistants
- Home Automation Builders — integrate HA into broader automation workflows and scripts
- Property Managers — monitor and control devices across multiple properties
- Energy-Conscious Users — optimize device states for energy savings via automations
- Security-Conscious Users — monitor sensors, cameras, and alarm states remotely
Built-in capabilities (15)
This is the primary way to control devices in Home Assistant. COMMON SERVICE CALLS: - light.turn_on: entity_id, brightness (0-255), color_temp, rgb_color - light.turn_off: entity_id - switch.turn_on: entity_id - switch.turn_off: entity_id - climate.set_temperature: entity_id, temperature - climate.set_hvac_mode: entity_id, hvac_mode (heat, cool, auto, off) - cover.open_cover: entity_id - cover.close_cover: entity_id - media_player.turn_on: entity_id - media_player.turn_off: entity_id - media_player.media_play: entity_id - automation.trigger: entity_id - script.turn_on: entity_id DOMAINS: light, switch, climate, cover, fan, lock, media_player, automation, script, scene, input_boolean, input_number, notify PARAMETERS: - domain (REQUIRED): Domain name (e.g. light, switch, climate) - service (REQUIRED): Service name (e.g. turn_on, turn_off, set_temperature) - service_data (OPTIONAL): JSON object with service parameters including entity_id EXAMPLES: - "Turn on living room light" → domain="light", service="turn_on", service_data={"entity_id":"light.living_room"} - "Set bedroom temperature to 20" → domain="climate", service="set_temperature", service_data={"entity_id":"climate.bedroom","temperature":20} Call a Home Assistant service on a domain
Check Home Assistant configuration validity
The event type must match automation triggers configured in Home Assistant. Fire a custom event in Home Assistant
Use this as a connectivity test before making other API calls. Check if the Home Assistant API is running
Get events from a Home Assistant calendar
Useful for analyzing trends and past behavior. Get historical state data for an entity
Use entity IDs from list_entity_states (e.g., light.living_room, climate.bedroom, sensor.temperature). Get the current state of a specific entity
Get the Home Assistant configuration details
Can be filtered by entity and time range. Get Home Assistant logbook entries
g., light: turn_on, turn_off, toggle; climate: set_temperature, set_hvac_mode). Essential for discovering what actions can be performed. List all available services across all domains
Each entity includes entity_id, state, last_changed timestamp, and attributes. Essential for discovering available devices. List all entity states in Home Assistant
List all calendars configured in Home Assistant
List all loaded components/integrations in Home Assistant
Useful for understanding what events Home Assistant is tracking. List all event types currently registered in Home Assistant
Useful for accessing HA template functions and state from the API. Render a Jinja2 template in Home Assistant
Why Cursor?
Cursor's Agent mode turns Home Assistant into an in-editor superpower. Ask Cursor to generate code using live data from Home Assistant and it fetches, processes, and writes. all in a single agentic loop. 15 tools appear alongside file editing and terminal access, creating a unified development environment grounded in real-time information.
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Agent mode turns Cursor into an autonomous coding assistant that can read files, run commands, and call MCP tools without switching context
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Cursor's Composer feature can generate entire files using real-time data fetched through MCP. no copy-pasting from external dashboards
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MCP tools appear alongside built-in tools like file reading and terminal access, creating a unified agentic environment
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VS Code extension compatibility means your existing workflow, keybindings, and extensions all work alongside MCP tools
Home Assistant in Cursor
Why run Home Assistant with Vinkius?
The Home Assistant connection runs on our fully managed, secure cloud infrastructure. We handle the hosting, maintenance, and security so you don't have to deal with servers or code. All 15 tools are ready to work instantly without any complex setup.
You stay in complete control of your data. Your AI only accesses the information you approve, keeping your sensitive passwords and private details completely safe. Plus, with automatic optimizations, your AI works faster and more efficiently.
* Every connection is hosted and maintained by Vinkius. We handle the security, updates, and infrastructure so you don't have to write code or manage servers. See our infrastructure
Over 4,000 integrations ready for AI agents
Explore a vast library of pre-built integrations, optimized and ready to deploy.
Connect securely in under 30 seconds
Generate tokens to authenticate and link external services in a single step.
Complete visibility into every agent action
Audit live requests, latency, success rates, and active security compliance policies.
Optimize spending and track token ROI
Analyze real-time token consumption and cost metrics detailed by connection.
Explore our live AI Agents Analytics dashboard to see it all working
This dashboard is included when you connect Home Assistant using Vinkius. You will never be left in the dark about what your AI agents are doing with your tools.
Home Assistant and 4,000+ other AI tools. No hosting, no code, ready to use.
Professionals who connect Home Assistant to Cursor through Vinkius don't need to write code, manage servers, or worry about security. Everything is pre-configured, secure, and runs automatically in the background.
Raw MCP | Vinkius | |
|---|---|---|
| Ready-to-use MCPs | Find and configure each manually | 4,000+ MCPs ready to use |
| Connection Setup | Manual coding & server setup | 1-click instant connection |
| Server Hosting | You host it yourself (needs 24/7 uptime) | 100% hosted & managed by Vinkius |
| Security & Privacy | Stored in plaintext config files | Bank-grade encrypted vault |
| Activity Visibility | Blind execution (no logs or tracking) | Live dashboard with real-time logs |
| Cost Control | Runaway AI token spend risk | Automatic budget limits |
| Revoking Access | Must delete files or code to stop | 1-click disconnect button |
How Vinkius secures
Home Assistant for Cursor
Every request between Cursor and Home Assistant is protected by our secure gateway. We automatically keep your sensitive data private, prevent unauthorized access, and let you disconnect instantly at any time.
Frequently asked questions
What Home Assistant URL should I use?
For local instances, use your Home Assistant's local network URL: http://YOUR_IP:8123 (or http://homeassistant.local:8123). For cloud access via Nabu Casa, use your remote URL: https://YOUR_INSTANCE.ui.nabu.casa. The API is accessible at the same base URL as your Home Assistant frontend.
How do I get a Long-Lived Access Token?
Log in to your Home Assistant web interface, go to your user profile (click your name in the sidebar, then Profile), scroll down to Long-Lived Access Tokens, click Create Token, give it a name (e.g., 'MCP Server'), and copy the generated token. This token never expires unless manually revoked.
What devices and integrations are supported?
All Home Assistant integrations are supported since the API works at the service/state level. This includes lights (Philips Hue, LIFX, etc.), thermostats (Nest, Ecobee, etc.), covers/blinds, switches, media players (Sonos, Chromecast, etc.), sensors, cameras, locks, vacuums, and 1000+ other integrations. Use list_entity_states to discover all available entities.
Can I trigger Home Assistant automations from the API?
Yes! You can trigger automations in multiple ways: 1) Call the automation.trigger service directly, 2) Fire a custom event using fire_ha_event that matches an event trigger in your automation, 3) Call the script.turn_on service to run scripts. You can also control devices directly which will trigger related automations.
What is Agent mode and why does it matter for MCP?
Agent mode is Cursor's autonomous execution mode where the AI can perform multi-step tasks: reading files, editing code, running terminal commands, and calling MCP tools. Without Agent mode, Cursor operates in a simpler ask-and-answer mode that doesn't support tool calling. Always ensure you're in Agent mode when working with MCP servers.
Where does Cursor store MCP configuration?
Cursor looks for MCP server configurations in a mcp.json file. You can configure servers at the project level (.cursor/mcp.json in your project root) or globally (~/.cursor/mcp.json). Project-level configs take precedence.
Can Cursor use MCP tools in inline edits?
No. MCP tools are only available in Agent mode through the chat panel. Inline completions and Tab suggestions do not trigger MCP tool calls. This is by design. tool calls require user visibility and approval.
How do I verify MCP tools are loaded?
Open Settings → Features → MCP and look for your server name. A green indicator means the server is connected. You can also check Agent mode's available tools by clicking the tools dropdown in the chat panel.
Tools not appearing in Cursor
Ensure you are in Agent mode (not Ask mode). MCP tools only work in Agent mode.
Server shows as disconnected
Check Settings → Features → MCP and verify the server status. Try clicking the refresh button.
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