Hi Grant,
Since EyeX Engine 1.4.0 there is a state called “GazeTracking” that indicates if the user’s eye-gaze is currently tracked or not. All the EyeX SDK’s (for C/C++, .Net, and Unity) includes code samples that shows how you could set up a state change listener for that state. With a small console app you should then be able to use the state change to programmatically trigger running a script/shortcut.