Admin and regional API differences

Admin API

Calling admin API

The URL, systemKey, and token this endpoint requires are obtained differently than others. To get those, do the following:

Click the Select project drop-down at the top of the IoT Core UI.
Click the Edit icon (pencil) next to the desired project.
Go to the SERVICE ACCOUNTS tab.
If a service account already exists, select it and choose DOWNLOAD CREDENTIALS. If a service account does not exist, create it and select DOWNLOAD CREDENTIALS.
A JSON file will be downloaded to your local machine. Open the file with an editor. Use the systemKey, token, and URL from the file as needed below.

Admin APIs

Regional API

Calling regional API

You can find the URL, SystemKey, and token required in the call by clicking API Keys (key icon) at the top-right of the Registry Details page. Use the Registry Keys section.