Where do I find this trigger in node red?

[nappyjim (Jim)]

I want to make a flow to act upon this trigger, but cant figure out how to get it into node red.

[stroo333]

this might be the way to go

[Kermit]

another option https://zachowj.github.io/node-red-contrib-home-assistant-websocket/cookbook/starting-flow-after-home-assistant-restart.html