Calling any of the Nuport APIs will require an API key to authenticate each call. API keys can be retrieved from your company settings page when logged into the Nuport web application.
The API key must be attached to the header of each REST API call made to Nuport. Only one key can exist at a time for each company, and can be revoked by regenerating an API key via the web application. Note that different API keys will exist for different base URLs and are not shared.