Python and Snapping

I am working on a python Add-in and in order to have the proper output I need to be able to snap to the corner point of a land grid. I have not been able to find any functions within arcpy that allows for this to happen.

I need the same functionality found on the snapping toolbar in order to get the precise X,Y Coordinates as input into my python script.

Has anyone tried this before or is anyone aware of this functionality within arcpy?

Thanks,