The intrest of MQTT is really picking up. For those who wants to get events over MQTT I recommend using “Publisher” and “Subscriber” that can be found a t https://github.com/aintegration. Axis is working on adding a MQTT in the firmware as a limited client is announced in the latest firmware. No user interface exists yet.
I decided to deprecate MQTT Me and Scene Me. These are now replaced with “Tracker” that can be found at https://github.com/pandosme/acaps/tree/master/tracker. Tracker is optimized for publishing video analytics trackers. If you only have the need to publish ONVIF events over MQTT or have an ACAP that subscribes for actions, I recommend using the Publisher or Subscriber found at https://github.com/aintegration.