We do use the Director via its own API (not via the GUI), but we have an issue there because we cannot specify in a filter ZoneName (as in the ZoneName of the icinga daemon running on a master or a satellite).
This causes Notification objects to exist on master AND satellites and we want to notify only from satellites, not from masters, but the notifications trigger on both, so we have some workarounds, but it would be really nice if we didn’t have to.
See this “linked” topic which caused this question here 
Thank you.