I’ve got my next events in a scroller on the TouchBar. I can see options to view the event in a calendar app, however what I’d love to be able to do is launch the Mac Drafts app with details of the event (e.g. the subject of the invite as the first line of the draft).
You can try one of these 2 options. It is my understanding that the Mac app fully supports x-callback-urls the same as the iOS app and has minimal support for AppleScript
Edit: it looks like better touch tool has provided no way of overriding what happens when you click on an event using the calendar widget