Cursor
auth
Supabase Authentication Integration Broken
After Cursor refactored your Supabase authentication integration, login/signup stops working. Users cannot authenticate or their session isn't being maintained.
Supabase client initialization or auth flow was broken.
Error Messages You Might See
Invalid Supabase credentials
Auth session not found
Signup failed
Login returns error
Common Causes
- Supabase client not initialized with correct URL and key
- signUp/signIn methods removed or refactored incorrectly
- Session management broken, not persisting auth state
- Auth listener not set up, session changes not detected
- Environment variables for Supabase not set
How to Fix It
Initialize client: createClient(url, anonKey). Sign up: await supabase.auth.signUp({email, password}). Listen to session: supabase.auth.onAuthStateChange(). Store session in state/context. Verify env vars NEXT_PUBLIC_SUPABASE_URL and _KEY.
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Tech stack: PHP 8.x, Symfony, React, Next.js, PostgreSQL, MySQL, Docker, AWS (ECS, RDS, S3, SQS/SNS, CloudFront), Terraform, Supabase. I also use AI tools daily (Claude Code, Cursor) in my own workflow, so I understand both the strengths and the gaps in AI-generated code.
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Get HelpFrequently Asked Questions
How do I persist auth across page reloads?
Supabase handles this. Call getSession() on app load to restore session from storage.
What's the difference between anon and service keys?
Anon key: client-side (safe to expose). Service key: server-side only (secrets). Use appropriate key based on context.