Udemy – Flask API Authentication with JWT: Beginner to Advanced

This course takes you from the absolute basics to advanced JWT concepts, guiding you step-by-step through real API security workflows used by professional backend developers. You will build a complete authentication system using Flask, SQLAlchemy, and JWTs, including user registration, login, access control, refresh tokens, token revocation, and claims-based authorization.

This course focuses on practical, real-world skills — so by the end, you’ll be able to secure any Flask API confidently and professionally.

What’s Inside This Course? (Content Overview):

• 1. Project Setup: You’ll start by creating a clean project structure and setting up a Flask application ready for API development.
• 2. Database Setup With Flask SQLAlchemy: Learn how to configure SQLAlchemy, create database models, and prepare your backend for storing user data securely.
• 3. Create User Accounts, Password Hashing, and Blueprints: Build a complete user registration system with secure password hashing and organize your project using Flask Blueprints.
• 4. Login and Create Access & Refresh Tokens: Implement login functionality and generate JWT access and refresh tokens that will power your secure authentication flow.
• 5. Protect Endpoints With JWTs: Learn how to secure routes so only authenticated users can access them, preventing unauthorized access to your API.
• 6. Error Handling: Handle common JWT-related errors such as missing tokens, invalid tokens, and expired tokens. This ensures your API returns clean, consistent, user-friendly error responses.
• 7. JWT Claims for Authorization: Learn how to add custom claims inside tokens and use them for permission-based access control.
• 8. Automatic User Loading (Current User From Token):
  Retrieve the current user directly from the JWT, making it easy to access user data in your protected routes.
• 9. Create New Access Tokens Using Refresh Tokens: Allow users to regain access by generating new access tokens without logging in again.
• 10. Revoke Access and Refresh Tokens (Logout System): Build a complete logout system where access and refresh tokens can be revoked so they cannot be reused.

Why Take This Course?

This course provides the exact practical knowledge required to build secure authentication for any Flask-based API.
Whether you’re building a small personal project or preparing a production-level API, this step-by-step course will give you a strong foundation in JWT-based authentication.

DOWNLOAD LINK: Flask API Authentication with JWT: Beginner to Advanced

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