Build Fast. Ship Secure. Vibe coding with Cursor, Supabase, and AI...
Prajwal Tomar@PrajwalTomar_
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Mar 29, 2025
~3 min read
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Build Fast. Ship Secure.
Vibe coding with Cursor, Supabase, and AI tools is game-changing.
But speed without security is a trap.
We’ve shipped 17+ AI-powered MVPs. Here’s a checklist we follow to keep things fast and safe:
Bookmark this before your next launch.
Vibe coding with Cursor, Supabase, and AI tools is game-changing.
But speed without security is a trap.
We’ve shipped 17+ AI-powered MVPs. Here’s a checklist we follow to keep things fast and safe:
Bookmark this before your next launch.
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1/ Start with context, not code
AI tools are fast. But without direction, they hallucinate.
Before coding:
• Draft a simple PRD
• Outline core features and flows
• Save docs in /instructions folder
Ask Cursor to read everything before writing a single line.
AI tools are fast. But without direction, they hallucinate.
Before coding:
• Draft a simple PRD
• Outline core features and flows
• Save docs in /instructions folder
Ask Cursor to read everything before writing a single line.
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2/ Enable RLS from day one
Supabase is powerful, but insecure if left unconfigured.
- Turn on Row-Level Security
- Write role-based access policies
- Test each route for data leaks
No RLS = every row is public with the right query.
Supabase is powerful, but insecure if left unconfigured.
- Turn on Row-Level Security
- Write role-based access policies
- Test each route for data leaks
No RLS = every row is public with the right query.
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3/ Rate limit sensitive endpoints
APIs without limits are open doors for:
- Spam
- Abuse
- Accidental DB crashes
Use:
- Supabase Edge Functions with a rate limiter
- Vercel Middleware to throttle frontend-heavy routes
APIs without limits are open doors for:
- Spam
- Abuse
- Accidental DB crashes
Use:
- Supabase Edge Functions with a rate limiter
- Vercel Middleware to throttle frontend-heavy routes
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4/ Validate everything on the server
Lovable and V0 build UI fast, but don’t rely on frontend validation.
Always validate on the backend:
- Email and password formats
- File uploads
- API payloads
- Form inputs
Trust nothing that comes from the client.
Lovable and V0 build UI fast, but don’t rely on frontend validation.
Always validate on the backend:
- Email and password formats
- File uploads
- API payloads
- Form inputs
Trust nothing that comes from the client.
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5/ Clean your dependencies
AI tools often bloat your project with:
- Unused packages
- Duplicate libraries
- Unnecessary scripts
After building:
- Run npm audit
- Remove what you don’t use
- Update what’s outdated
Fewer packages = fewer vulnerabilities.
AI tools often bloat your project with:
- Unused packages
- Duplicate libraries
- Unnecessary scripts
After building:
- Run npm audit
- Remove what you don’t use
- Update what’s outdated
Fewer packages = fewer vulnerabilities.
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6/ Don’t leak secrets
AI sometimes exposes tokens in frontend code.
Keep your secrets safe:
- Use .env for all keys
- Never expose secrets in client-side code
- Double-check anything AI generates
One exposed key = full system access.
AI sometimes exposes tokens in frontend code.
Keep your secrets safe:
- Use .env for all keys
- Never expose secrets in client-side code
- Double-check anything AI generates
One exposed key = full system access.
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7/ Don’t skip logs
Use:
- Supabase logs
- Console logs for edge cases
- Slack alerts for errors or failed actions
What you don’t monitor, you can’t fix.
Use:
- Supabase logs
- Console logs for edge cases
- Slack alerts for errors or failed actions
What you don’t monitor, you can’t fix.
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8/ Secure your auth flows
MVPs often ignore secure auth. Don’t.
Use:
- Supabase email login or OAuth
- Role-based routing
- Auth guards on sensitive pages
- Invite-only systems for early access apps
Protect the entry points.
MVPs often ignore secure auth. Don’t.
Use:
- Supabase email login or OAuth
- Role-based routing
- Auth guards on sensitive pages
- Invite-only systems for early access apps
Protect the entry points.
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9/ Mobile responsiveness ≠ optional
Most AI-generated UIs break on small screens.
Before shipping:
- Test on mobile and tablet
- Use Tailwind’s responsive utilities
- Fix padding, button sizing, and overflow
Ship clean across all screen sizes.
Most AI-generated UIs break on small screens.
Before shipping:
- Test on mobile and tablet
- Use Tailwind’s responsive utilities
- Fix padding, button sizing, and overflow
Ship clean across all screen sizes.
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10/ Build fast, but don’t build everything
Your MVP is not your startup.
Keep it simple:
- 3 to 5 features max
- Manual ops > automation (early on)
- Launch → feedback → iterate
Speed matters. But focus matters more.
Your MVP is not your startup.
Keep it simple:
- 3 to 5 features max
- Manual ops > automation (early on)
- Launch → feedback → iterate
Speed matters. But focus matters more.
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11/ Here’s the full AI prompt I use to run security audits on MVPs before going live.
Copy-paste ready: rb.gy/tanzmm
Save it. Reuse it. Ship safer MVPs.
Copy-paste ready: rb.gy/tanzmm
Save it. Reuse it. Ship safer MVPs.
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Wrap-Up
If you’re building with AI:
- Use context-rich prompting
- Lock down Supabase early
- Validate everything
- Audit your code
- Protect your users
Vibe coding is the future.
But secure coding is the foundation.
Bookmark this. Revisit before every launch.
If you’re building with AI:
- Use context-rich prompting
- Lock down Supabase early
- Validate everything
- Audit your code
- Protect your users
Vibe coding is the future.
But secure coding is the foundation.
Bookmark this. Revisit before every launch.
