Build a Personal Expense Tracker with Codex #4 | JWT Authentication, bcrypt & Protected Routes

In Episode 4, we add real authentication and protected API routes to the Expense Tracker project. This is a major step toward building production-style full-stack applications. GitHub: https://github.com/AppSoloTech/expens... In this video we: Install and configure bcrypt Hash and store passwords securely Create JWT authentication tokens Build Auth routes for: Register Login Create authentication middleware Protect private API routes Test everything in Postman Use Bearer Tokens for authenticated requests We also walk through how JWT authentication actually works and how middleware protects backend resources. Tech Stack Node.js Express.js PostgreSQL bcrypt jsonwebtoken Postman Codex What You'll Learn Password hashing JWT authentication flow Protected routes Auth middleware Bearer token testing Real-world backend security basics #LetsVibeCode #JWT #Authentication #ExpressJS #NodeJS #PostgreSQL #bcrypt #RESTAPI #FullStackDevelopment #Codex