How to globally toggle app function on/off?

[JMichaelTX]

@sonicly

I have an application that runs only as a menubar app. It has a simple command that is essentially "Turn App On"/"Turn App Off". Is there a way to make Keyboard Maestro set up a global hotkey to initiate the command in this app?

I just ran across this topic which addresses your issue:
osx - How to send a menubar app (with no menubar menu items) a command in AppleScript? - Stack Overflow

I don't know if you are the OP or not, and I have NOT tested the suggested solution. But maybe it will at least get you started.

@sonicly

So I can enable it to show up on the Dock and with that I was able to set keyboard shortcuts that work... But I have to get focus on the app first (i.e., cmd-tab). That's a hassle and I'd rather just issue something like command-option-shift-space to turn it on and then to toggle it back off again. That seems doable with KM, but I'm not sure how to make the Maestro do that per se

This is very easy in KM, just use the

• Activate a Specific Application action (KM Wiki)
• Type a Keystroke action (KM Wiki) to issue the shortcut key.

Another option is to use the Select or Show a Menu Item action (KM Wiki), but I'm not sure if it will work in this situation.