HAT is an API-only service, meaning it does not enforce a specific
JWT). Each HAT runs as a separate server and has a publicly-reachable address (such as
https://test.hubofallthings.net). All calls in this documentation are therefore executed against an individual HAT. You can learn more in the HAT documentation.
The steps in logging in with a HAT are:
/hatloginendpoint on their hat, such as