Is it possible to write a custom TouchBar app for an existing application?

Question

I have tried looking for an answer to this but can't seem to see anything about it.

I have a piece of software on my laptop (not written by me), that I want to customise. Some of the tasks I do are very repetitive, and could be simplified by just pressing a button on the Touch Bar that executes a number of commands.

Is it possible to write a Touch Bar app that either:

1) Customises the application's original TouchBar app (for which there is none)

2) Runs only when that application is running, and hides when the application is out of focus

Thanks

Answer 1

I believe BetterTouchTool can do that.

Also in the "App Specific" button you can customise when to hide system touch bar and when to show it again