Lambda’s are designed to be short-lived, I don’t think it’s a fine idea to run it in a loop TBH.

Yeah, you are right, but maybe it would be fine to launch, have the lambda run for 30-60sec (i.e. checking idle time for 1 min, stateless, only keeping track inside the execution context) then take it down)
What I'm trying to solve here, is (1) quick way to understand if the agent is actually idling or just between Tasks (2) still avoid having the "idle watchdog" short lived, to that it can be launched with a lambda function once every X min.
wdyt?