01 v0 rescue
Fix the v0 app that works on your screen but breaks for users.
v0 produces beautiful Next.js frontends. The risk hides behind them. Server actions and API routes generated to 'just work' often skip session checks, and the polished UI makes an unlaunchable backend look launch-ready.
Fixed price, fee credited toward any fix. Stack: Next.js + Vercel, typically with Supabase/Neon + Stripe. NDA on request, read-only access is enough.
What actually breaks in v0 apps.
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Server actions without auth
Next.js server actions and API routes that never verify the session. The UI hides them, attackers don’t need the UI.
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Polish masking payment theatre
A pixel-perfect checkout that shows “Thanks!” without server-verified charges.
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Client/server data leaks
Sensitive fields fetched server-side then passed wholesale into client components, visible in the page source.
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No error or rate limiting story
Zero handling for provider failures and no rate limits on expensive routes: one loop away from a surprise bill.
The full five-point check (auth & access control, payments, secrets, error handling, monitoring) is described on the rescue overview. Most apps fit the €990 critical fix sprint after the audit. See pricing here.
v0 questions, straight answers.
How do I take a v0 app to production?
Audit the server boundary first: session checks on every action/route, server-verified payments, secrets in env vars, error handling, monitoring. Our 48-hour €299 audit gives you the exact list for your app.
The design is done, so why would anything be broken?
Because v0’s strength is the visible layer. The five things that break (auth, payments, secrets, error handling, monitoring) are all invisible in a demo. That’s precisely what we check.
Do you keep the v0 design?
Yes. The UI is usually the best part. We harden what’s behind it.
Entry: closing
Know where your v0 app stands 48 hours from now.
Balance due one conversation
Now booking€299, fixed, 48 hours, yours to keep either way, and credited in full if we do the fix.