Home Assistant event triggering with AppDaemon Webhooks

Summary This is a minimal template that focuses on how to integrate n8n and Home Assistant for event-based triggering from Home Assistant using the AppDaemon addon to call a webhook node.

Problem Solved: There is no Home Assistant trigger node in n8n. You can poll the Home Assistant API on a schedule. A more efficient work around is to use the AppDaemon addon to create a listener app within Home Assistant. When the listener detects the event, it is subscribed to. An AppDaemon app is initiated that calls a N8N webhook passing the the event data to the workflow.

AppDaemon runs python code. The template contains a sticky note. Within the sticky note there is a code example (repeated below) for a AppDeamon app, the code contains annotated instructions on configuration.

Steps:

Install the AppDaemon Add-on A. Open Home Assistant. In your Home Assistant UI, go to Settings - Add-ons (or Supervisor - Add-on Store, depending on your version).

B. Search and Install. In the Add-on Store, search for "AppDaemon 4". Click on the result and then the Install button to start the installation.

C. Start the Add-on. Once installed, open the AppDaemon 4 add-on page. Click Start to launch AppDaemon. (Optional but recommended) Enable Start on boot and Watchdog options to make sure AppDaemon starts automatically and restarts if it crashes.

D. Verify Installation. Check the logs in the AppDaemon add-on page to ensure it’s running without issues. No need to set access tokens or Home Assistant URL manually; the add-on is pre-configured to connect with your Home Assistant.