Concept
Authentication in the Handbooks API follows a standardized approach. We have implemented The Client Credentials Flow as defined in OAuth 2.0 RFC 6749, section 4.4.
Refer to the diagram below, where the order of operations is represented by blue dots.

In essence, to access Handbooks data, you simply need to set the correct and valid JWT token in the HTTP headers for
each request you make. Proceed to the next articles to learn how to generate the necessary ClientId and ClientSecret
for authentication and obtaining the Access Token.