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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Richard McSorley
Full-Stack Software Engineer with 8+ years building high-performance applications for enterprise clients. Shipped production systems at Walmart (4,000+ stores), Cigna (20M+ users), and Arkansas Blue Cross. 5 patents in retail/supply chain tech. Currently focused on AI integrations, automation tools, and TypeScript-first architectures.
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Simon A.
I'm a backend developer building APIs, emulators, and interactive game systems. Professionally, I've developed Java/Spring reporting solutions, managed relational and NoSQL databases, and implemented CI/CD workflows.
legrab
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Mehdi Ben Haddou
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Vlad Temian
15+ years shipping production infrastructure for startups. Former CTO at qed.builders (acquired by The Sandbox).
Cursor ambassador and agentic tooling builder.
I've scaled systems, automated deployments, and built observability tools for AI coding workflows. I specialize in taking vibe-coded apps from broken prototype to production-ready: fixing Supabase auth/RLS, Stripe integrations, deployment pipelines, and cleaning up AI-generated spaghetti.
I build tools in this space (agentprobe, claudebin, micode) and understand both sides: how AI generates code and why it breaks.
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Sage Fulcher
Hey I'm Sage! Im a Boston area software engineer who grew up in South Florida. Ive worked at a ton of cool places like a telehealth kidney care startup that took part in a billion dollar merger (Cricket health/Interwell health), a boutique design agency where I got to work on a ton of exciting startups including a photography education app, a collegiate Esports league and more (Philosophie), a data analytics as a service startup in Cambridge (MA) as well as at Phillips and MIT Lincoln Lab where I designed and developed novel network security visualizations and analytics. I've been writing code and furiously devoted to using computers to make people’s lives easier for about 17 years. My degree is in making computers make pretty lights and sounds. Outside of work I love hip hop, the Celtics, professional wrestling, magic the gathering, photography, drumming, and guitars (both making and playing them)
Nam Tran
10 years as fullstack developer
Yovel Cohen
I got a lot of experience in building Long-horizon AI Agents in production, Backend apps that scale to millions of users and frontend knowledge as well.
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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.