In a call status notification

It has been asked for a number of times, and I have read through a few posts.

This is what I need.
I desperately need API that will tell if a user (myself) is on a call, regardless if the call is a scheduled meeting or not.

I have a notification light at my door ready to receive this data. On a call? Big red light to signal my noisy office mates to not knock, not enter, and to not stand at my door waiting for a call to end. If this can be done without Zoom API then that is fine. Just trying to find a way to make this work without having to check something like Camera on status from my computer. Any ideas?