Is there an event to catch issues added or removed after sprint start?

[Emre Y_ Okur]

I want to write a custom listener for issues which are added/removed to the current sprint after sprint has started. I have done some research and there are events only for Sprint Started, Sprint Created or Sprint Closed. One possibility is to use the Issue Updated event but that would be very inefficient since, all issue updates out of my scope will trigger my listener. 

Have any idea?

[Ken McClean]

You'd have to create a listener that look at issue add or delete in a specific project, and compare the date against the start date of the project's current sprint.   Limiting the listener to just the project in which the Sprint exists should mitigate most of the inefficiencies.