Adding Authentication to Your Flask Backend with SuperTokens

User authentication is a critical component of most modern systems, and this text demonstrates how to implement it in a Flask application using SuperTokens, an open-source solution that facilitates the addition of login mechanisms and session management. SuperTokens supports various authentication methods including Email & Password, Passwordless, and Social login, and can be quickly set up using the SuperTokens CLI, which generates a project with authentication features already integrated. The setup involves configuring the core connection URI, defining the app's API and website domains, and selecting authentication recipes, such as session management and email-password. The CLI also creates a fully functioning web application with pre-built UI components for authentication, allowing developers to focus on application logic rather than building authentication from scratch. The document provides detailed instructions for initializing and configuring SuperTokens, including the use of middleware to handle authentication APIs and CORS headers, and emphasizes the importance of replacing the demo core with a production-ready version for deployment.