Launch Checklist · v0 (Vercel)

Launching a v0-generated app? Here is what v0 does not generate for you.

v0 is excellent at UI. Production readiness lives in the layers v0 was never asked to think about.

v0 generates genuinely clean Next.js and React code, closer to what a human engineer would write than most AI builders. That quality can create false confidence: because the code looks production-grade, teams sometimes skip the review pass they would give code from a less polished generator.

The gap on v0 apps is rarely code quality, it is the operational layer v0 was never asked to think about: what happens when the database is down, what happens when a webhook fires twice, what happens when someone hits an API route 1,000 times a second.

v0 (Vercel)-specific

What gets missed on v0 (Vercel) apps.

No backend by default

v0 focuses on the frontend and component layer. The API routes, database schema, and auth logic are usually still yours to build and harden.

Clean code masking missing error handling

v0's output looks production-ready, which makes it easy to skip a deliberate pass for error boundaries, loading states, and failure-mode UI.

Vercel deployment settings

Preview vs. production environment variables on Vercel are a common source of "works on preview, broken on prod" bugs.

FAQ

Common questions.

Does v0 generate a backend?

v0 is primarily a frontend/component generator. You are typically still responsible for API routes, database design, and auth, which is exactly where most of the production-readiness checklist lives.

Why does my v0 app work in preview but break in production?

The most common cause is environment variables set for the Preview environment on Vercel but not for Production, they are separate scopes and do not inherit from each other automatically.

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