The Octave REST API is only accessible using HTTPS, and all API endpoints require authentication using an account name and token combination.
Each account has a master token that can be retrieved via the Octave User Interface. To retrieve your master token, navigate to the lower left corner of the user interface, click on your user name, and locate your master token. For additional information see copying your user name and master token.
The master token carries the same rights that you would have when logged into https://octave.sierrawireless.io interface so be sure to protect it appropriately; do not share it with anyone as it allows to access some of your private data on the platform.