There is a old app, that does not use the cloud, With a proxy app on a windows/linux/mac you can use it as a man in the middle. It spits out everything 
That is how I made this MQTT aproach: GitHub - william-sy/Daikin-BRP069A62: Creating a daikin interface other than the apps
Here are I believe all the endpoints: Daikin-BRP069A62/docs/files/notes/notes6.txt at c65577626039547e85a00b70a2b551a1dbded2b2 路 william-sy/Daikin-BRP069A62 路 GitHub