Yes it is. Make your AppIntent conform to the LiveActivityStartingIntent and call your start live activity logic in the perform method.

I think I found a solution but it's not working. Text(.now, format:.timer(countingDownIn: Date.now..<Date.now.addingTimeInterval(120), showsHours: true, maxFieldCount: 2, maxPrecision: .seconds(60)) ) This will display "2 minutes" but after waiting over a minute it never updates to "1 minute" This is new to iOS18. I will submit a bug.