Continuity for Development Use

Continuity is a very useful feature across Apple devices. Recently, I’d like to integrate continuity into my app by invoking sketch from the app. I couldn’t find an API for this, nor can I can find the program invoked when I right click on finder and try to add a drawing from my iPad. My two questions are:

  1. Is the feature officially supported for development use?
  2. In general, is it possible to trace what programs are called when I invoke a feature through the MacOS GUI?
Continuity for Development Use
 
 
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