The Authentication Rabbit Hole: What I Learned From Vibe-Coding Auth with AI

The allure of AI-assisted development in building a JavaScript application with on-premise, standards-based OIDC authentication reveals complexities and security challenges often overlooked without domain expertise. The AI efficiently generates code for basic authentication features like user registration and login, but it requires specific prompts to address critical security measures such as password validation, duplicate account prevention, and JWT secret management. As the project evolves, gaps in understanding necessary security practices and operational requirements become evident, including issues with frontend security, testing, and integration with broader systems. The experiment underscores the value of solutions like FusionAuth, which offer comprehensive security features, compliance, and maintenance, highlighting the classic "build vs. buy" dilemma. While AI can expedite development, it cannot replace the nuanced understanding required to ensure robust, secure, and compliant authentication systems, suggesting that in most cases, users are better served by purpose-built platforms.