I've been using the textbar app to display time machine information as referenced here, it's helpful:

Time Machine monitoring app using data from the "tmutil status" command

I want to use textbar to display a quick notification in menu bar when an action (specific actions preferred, or any action if it has to be that way) has been triggered in shortcut apps, bettertouchtool and keyboard maestro.

I don't know shell script so I'll have to ask/pay, but could it be done without the devs involvement? Because that might be tough, especially btt that forum is very inactive and dev doesn't reply to pms much.

There was some discussion on keyboard maestro forum about it working with bitbar, but bitbar seems to be have been abandoned and succeeded by textbar and the post is from 2016 mostly and the language they're using is Klingon to me unfortunately.

https://forum.keyboardmaestro.com/t/create-menu-bar-status-icons-using-bitbar/3658/11

appreciate any info.