How do I debug my Siri (Intents) extension?
Run your app in device first.
Select SIRIKIT extension scheme run in your device, select your app from the list prompted.
Wait for SIRI to be active, send your running SIRIKIT extension into background.(Some times you need not to do this step also).
Activate SIRI by pressing home button again, give a command and you will see your breakpoints working inside Intent Handler.
just select your siri extension scheme and hit run button, then xcode will prompt a list of applications for you to choose, just choose your app, for more details, please checkout the article:http://jamesonquave.com/blog/adding-siri-to-ios-10-apps-in-swift-tutorial/