Does any service turn on when "Home Assistant Started" comes up?

You know when you restart home assistant, once everything is started up you get a little pop up that says “Home Assistant started”. Is there anyway i can monitor this so I can trigger a routine off of it? Any sort of service that turns on? etc

I don’t know how closely it coincides with the pop-up, but there is a Home Assistant trigger that can be set to fire on start.

There are “start” and “started” events that can be detected by an Event Trigger.

The difference between the two is explained here: Common Events


If you are interested in seeing an example, I created a ‘Graceful Shutdown Sensor’ that listens for the home_assistant_started event.