I just enrolled as a nest developer and have been reading through the API and Documentation. I have seen the endpoint's and process required to sign in, however I've been unable to find what end points are required to access data on the various devices? Most of the API and Documentation seems to focus on Firebase.
Searching for the answer shows a lot of older (2 years) projects that are probably out of date
The endpoint begins at https://developer-api.nest.com/
Data is accessed at a path after that url. So, if you just want devices, your endpoint is https://developer-api.nest.com/devices
Just thermostats? https://developer-api.nest.com/devices/thermostats
And so on. If you look at the reference api, you can see the paths