This tutorial demonstrates how to build browser-based OAuth into a command-line interface (CLI) using WorkOS AuthKit. The process involves authenticating users, obtaining access tokens, securely storing them in the system keychain, and retrieving them when making requests to secured endpoints. The implementation includes launching the browser for authentication, handling redirects from identity providers, and securely storing access tokens. By using WorkOS AuthKit, developers can focus on building an excellent user experience while handling OAuth and user management tasks.