Ajax systems integration to complement home security

Have been looking at this thread for quite some time. We installed Ajax alarm system at my mother-in-law and was thinking about the same in my app. The thing is for me its completely crazy to have one door sensor from ajax for alarm purpose then another for homey purposes. For that reason I was hoping to see some API from Ajax so some sensors and their status can be reused. Looks like not gonna happen.

Anyone knows similar alarm systems that are simple yet have API and Homey app for integrations?