How do I add user authentication?
Quick Answer
Use a service like Supabase Auth, Clerk, or Auth0. Never build authentication from scratch. AI tools integrate these services well and they handle security complexities you don't want to manage.
Full Explanation
User authentication (login/signup systems) is one area where using existing solutions isn't just convenient-it's essential for security.
Why you shouldn't build it yourself:
- Password hashing, session management, and token security are complex
- Security vulnerabilities in auth code can be catastrophic
- Account recovery, email verification, and rate limiting add complexity
- You'd be reinventing what teams of security experts have already built
Recommended services:
Supabase Auth (best for vibe coding):
- Integrates with Supabase database seamlessly
- AI tools like Lovable support it natively
- Handles email/password, social logins (Google, GitHub)
- Free tier is generous
Clerk (best developer experience):
- Beautiful pre-built UI components
- Great documentation
- Slightly more expensive but very polished
Auth0 (enterprise-grade):
- More features, more complexity
- Better for apps with complex auth requirements
- Free tier is limited
Implementation with AI tools: Most AI builders can add authentication with prompts like 'add user login and signup with email and password'. They'll generate the forms, connect to the auth service, and handle session management.
Just make sure to configure your auth service properly-AI can generate the code, but you need to set up the service accounts and security settings.
Related Questions
What are the security risks of AI-generated code?
AI code can have security vulnerabilities like any code. Common issues include improper input validation, weak authentication, and exposed API keys. Professional review is recommended for sensitive applications.
What's Supabase and why is it popular?
Supabase is an open-source backend platform that gives you a database, authentication, and APIs in one place. It's popular because it's powerful, beginner-friendly, and free to start.
What's the best database for beginners?
Supabase is the current favourite for beginners-it's free to start, has a visual interface, and handles authentication too. Firebase is another solid option.
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