Built a little Python agent that monitors my macOS process list to see if I'm actively in a Zoom call, and runs an "on air" script when I join one and an "off air" script when I end one. I use this to automatically turn on a smart light I've designated as an "on air light" so my family knows when I'm on a call.
Very much "works on my machine", but people might find this useful
And here's my little hacky script to talk to SmartThings to toggle lights: https://github.com/darrenpmeyer/smartthings-onair
It depends on a "just enough to work" implementation of the SmartThings API here: https://github.com/darrenpmeyer/python-smartthings