v0 rescue

v0 built the UI. We build what it was never meant to.

v0 is honestly one of the better tools at what it actually claims to do: clean, standard-pattern React and Tailwind UI, fast. The confusion, and the reason we get emails about it, is that it's a frontend generator, not a full-stack one, and that distinction isn't always obvious until you've exported the code and tried to run it somewhere that isn't v0's own preview. Data that looked real in the demo turns out to be hardcoded. A screen that worked in preview is blank in production. We wire up the backend v0 was never trying to build, and fix what's actually broken in the part it did build.

Send us the repo Read the FAQ

Founder

“Refresh the page and the data you entered is gone.”

Auditor

“It runs fine in v0's preview. Locally, it's a blank screen.”

Engineer

“A secret key ended up visible in the browser.”

Investor

“Your app was vulnerable to a critical, actively-exploited bug and you never knew.”

Co-founder

“The GitHub sync silently inherited a broken branch.”

Hire

“Components look almost right, but slightly off from your design system.”

If you see this, this is you

The signals.
What they actually mean.

“Refresh the page and the data you entered is gone.”

By default, v0-generated apps store data hardcoded or in component state. There's no database until you connect one yourself — this is the single most common reason a v0 export 'doesn't work.'

“It runs fine in v0's preview. Locally, it's a blank screen.”

Recurring pattern on Vercel's own community forum: missing dependencies that never got carried over on export, mismatched environment variables, and code that quietly relies on v0's internal runtime instead of a real one.

“A secret key ended up visible in the browser.”

Vercel's own blog said it plainly in August 2025: v0 blocked over 17,000 deployments in a single 30-day window for exposed secrets, and over 100,000 insecure deployments total since launch, because LLMs, v0 included, routinely misuse the NEXT_PUBLIC_ prefix and put server secrets where the client can read them.

“Your app was vulnerable to a critical, actively-exploited bug and you never knew.”

CVE-2025-55182, unauthenticated remote code execution in the React framework v0 apps run on, CVSS 10.0, actively exploited in the wild. Vercel auto-patched it across more than 800,000 v0 deployments in December 2025 — which is the reason most people never heard about it.

“The GitHub sync silently inherited a broken branch.”

Documented on Vercel's community forum: new branches created through v0's GitHub integration sometimes inherited a prior branch's broken state instead of starting clean.

“Components look almost right, but slightly off from your design system.”

v0's own docs are upfront about this one: it's trained on default, unmodified shadcn/ui and Tailwind. Customize your registry and 'you may see unexpected generations' — an acknowledged constraint, not a bug.

Our process

Five steps. 14 days.

012 days

Audit

We check what's actually wired to a database versus hardcoded, confirm which React and Next.js versions you're on against the known CVE list, and audit the client bundle for any secret that shouldn't be there.

021 day

Triage

Keep, rewrite, delete. v0 apps tend to be UI-heavy and backend-light, so it's usually 70/25/5 — most of the frontend survives untouched.

035–8 days

Foundation

Real database and auth get wired in, Neon, Supabase, whatever fits your stack. Hardcoded and component-state data becomes actually persistent. Secrets move server-side.

042–3 days

Migration

We stand up the wired version in a real environment, confirm it behaves the same outside v0's preview as inside it, then cut over.

051 day

Handoff

Documented, deployed, CI green. v0 stays useful for generating new UI afterward — it's just no longer the thing holding your data.

What we do with the code

Three piles. Honest splits.

Keep

70%

UI components, layout, styling — this is what v0 is actually good at, and it usually shows.

Rewrite

25%

Data layer, auth, anything that was hardcoded or assumed a backend that doesn't exist.

Delete

Dead code from a broken GitHub branch sync, leftover secrets in client bundles.

Verdict

Who this is for.

v0 crossed 4 million users, and teams and enterprise accounts now generate over half of its revenue, this isn't a toy. Vercel's own case study describes a Stripe internal tool built in v0 that saw 288 percent adoption growth. The tool does what it says. What it says, though, is "frontend scaffolding accelerator," not "full-stack app builder," and that's a distinction founders skip past when a demo looks finished. A finished-looking UI with no database behind it isn't a finished app. It's a finished first third of one. If your v0 app is still a prototype you're validating, you probably don't need us yet, see if the idea holds up before wiring a real backend under it. If people are actually using it and hitting the "data disappeared" problem, that's the exact gap we close.

FAQ

Questions founders ask.

Why does my app work in v0 but not when I export it?

Almost always a missing database connection or an environment variable that didn't carry over. We check both first.

Do I need a whole new backend, or can you patch what's there?

Usually a real backend needs wiring in, since v0 apps often don't have one by default. We scope this against what your app actually needs, not a generic template.

How do I know if I'm affected by the React CVE?

If your app was deployed through v0 before December 2025 and hasn't been redeployed since, it's worth checking your React version directly. We confirm this as part of the audit.