Fix My Cursor-Built App for Production

Cursor wrote the code. You still own the security.

Cursor is a good editor. It turns out working software fast, and "it works" is a real milestone. But working and production-grade are two different bars. Cursor optimizes for code that runs and matches your prompt, not code that holds up to a real user, a real attacker, or real traffic. That gap is yours to close before you ship.

The good news: the holes cluster in the same predictable places every time. That's exactly what makes them fast to find and fix. We do this for a living, on a fixed price, with a working demo every week.

What Cursor-built apps usually get wrong

Across the Cursor-built apps we audit, the same failure modes show up over and over. None of them are exotic. All of them get an app rejected from production.

• No real auth. Login looks done, but the checks live in the UI, not the server. Hit the API directly and you walk straight past them.
• Broken access control. Tables and routes scaffolded with permissive defaults. On Supabase or Postgres, row-level security is often just off, so editing an ID in a URL reads someone else's data.
• API keys in the client bundle. Keys prefixed with NEXT_PUBLIC_ or VITE_ ship to the browser, where anyone can read them in seconds. Sometimes the secrets are committed straight into git history too.
• No tests. Nothing catches a regression. Every change is a coin flip, and you find out in production.
• No rate limiting. One scraper or one bad actor runs up your bill or takes the app down.
• No monitoring. When it breaks, you hear about it from a user, not an alert.

If you want to gut-check your own build first, run our free production readiness check, or read is my AI app production-ready.

Two Cursor-specific things to know

Beyond the code it writes, Cursor the app has its own trust settings worth checking. Rules files travel with your repo and steer how the agent behaves, and hidden characters in one can quietly push the AI to write weaker code. Cursor can also run MCP servers, which means it executes commands you've approved. Keep Cursor updated, review any rules file or shared template like you'd review executable code, and only enable MCP servers you trust. We cover the detail in is Cursor safe.

How we harden it

We don't rewrite your app from scratch to look busy. We keep what works, fix what's dangerous, and make it shippable.

1. Lock down auth and access control. Move every check server-side. Turn on row-level security for every table holding user data and prove it with tests.
2. Pull secrets out of the client. Move keys server-side, scrub them from git history, and rotate anything that already leaked.
3. Add the missing safety layer. Rate limiting, input validation, real error handling, and monitoring so failures page you, not your customers.
4. Write the tests. Cover the auth paths and the business logic so the next change doesn't break something quiet.
5. Set up deploys. A real pipeline so shipping is boring and reversible.

For the deeper security background, see the OWASP Top 10 for vibe-coded apps, exposed API keys in AI-built apps, and Supabase RLS hardening.

What it costs

Fixed price, agreed up front. No hourly meter running in the background.

Step	Price	What you get
Week-1 build audit	$4,000 fixed	We map every blocker between your Cursor build and production, with a fix plan and a cost to finish.
Full hardening / rescue	From $14,000 fixed	We do the work above and hand you a production-ready app. A US or UK agency quotes $60k+ on an open hourly meter.
Due-diligence rescue audit	$2,500	Credited in full toward the rescue if you proceed.
AI code security audit	First 15 min free	Show us the app, we tell you the specific gaps.

See full pricing or the prototype-to-production service. Not sure whether to fix or start over? Read fix or rebuild a vibe-coded app.

The guarantee

We find every blocker or the audit is free. On top of that, every client gets the same terms: senior engineers only, no juniors. A fixed price agreed before we start. A working demo every week before each payment. 100% of the code and IP transferred to you from day one. A 30-day warranty after launch. We've shipped production systems for ShapeShift, CoinDesk, Komodo, SALT, and WallStreetBets, so this isn't our first rescue. See our work.

Show us your Cursor build

Book a free 15-minute audit. You show us the app, we tell you the exact security and production gaps and what it takes to fix them. No obligation. Book your free 15-minute audit.