Trigger automation when another automation is triggered

Configuration
1

I am interested in how I can trigger an automation based on whether another automation has been triggered.

BUT:

  1. The first automation can’t know about the subsequent automation(s). I don’t want to change the first automation at all. So I can’t just call automation.trigger from the first automation.

  2. I don’t just want to copy all of the same triggers from the first automation. The second one must run as a result of the first one getting triggered.

Is there an event that is raised when an automation is triggered that I can use to trigger my second one?

2

There is the last triggered attribute of an automation.
If this updates then the automation has triggered.

3

Yeah, I think this’ll work. I forgot about that attribute in automations!

4

There will also be an event that you could use as a trigger.

5

This is what I was thinking of when I wrote the original post. I think both methods will work as expected.