I believe this will be the recommended approach for updating device details (attributes) and/or simple commands for a single device. I have only discovered recently that if you want more complex responses to a single HTTP call, you can setup a HTTP endpoint as a trigger for an RM rule, allowing you to initiate any number of responses to a HTTP call from outside the HE hub. Others may be able to explain this in more detail if this is what you are after.... Or I could find the post where I read it....
about sharptools: that was what I use on ST hub, but then it was just an android app with widgets.
Now Sharptools is a service with subscription. Am I wrong ?
I wouldn't pay for a service 30$/y , especially when there are other methods that do the same for me.
about Hubitat Dashboard app: I installed it and it found my hub, but reports "no devices"
do you have any idea why ?