// V0 SECURITY SCANNER
Is your v0 app safe to charge people money?
v0 turns a prompt into a polished Next.js app, and it is easy to wire in Supabase or Neon and push it live on Vercel the same day. The UI looks production-ready — but looking finished and being safe are not the same thing. Server actions, environment variables and database rules are where the real risk sits. Veilguard scans your live v0 app, grades it A to F, and hands you the exact fix for every issue.
Free — no signup · Your code stays yours · Results in ~60s
// WHAT WE CHECK
What Veilguard checks in a v0 app
Exposed environment variables
Keys marked NEXT_PUBLIC_ or otherwise shipped to the browser, where they are one right-click away from anyone.
Open database rules
Supabase RLS or your Postgres policies left permissive, so any visitor can read or change data that isn’t theirs.
Unprotected server actions & routes
Next.js server actions and API routes that skip authorization, letting the wrong user trigger privileged operations.
Payment webhook verification
Stripe webhooks that accept unsigned requests, so a forged event can mark orders as paid.
Overly open CORS
APIs that respond to any origin, exposing your users to cross-site requests.
Missing security headers
HSTS, framing and content-type protections absent on your deployment.
// THE GAP
Why v0 apps ship exposed
v0 is exceptional at generating interfaces, and that polish is exactly what hides the risk: an app that looks done reads as safe. But the security-critical parts — who is allowed to do what, and which secrets reach the browser — are decisions v0 makes for convenience, not safety. Veilguard reviews those decisions for you before your customers do.
// HOW IT WORKS
Scan. Understand. Fix.
Scan
Paste your app’s link. No install, no signup — just the URL you already share with customers.
Understand
A clear A–F grade and every issue in plain English: what it is, why it matters, and how bad it really is.
Fix
The exact fix for each issue — copy-paste code or a ready-made prompt for your AI. Then we keep watching.
// FAQ
v0 security, answered.
Can Veilguard scan a v0 (Vercel) app?
Yes. Paste your deployed URL and we scan it from the outside in about a minute. If it uses Supabase, we run a deeper row-level-security audit as well.
Does it check Next.js server actions and API routes?
With a read-only GitHub connection we check for authorization gaps in server actions and routes — a common way v0 apps let the wrong user do privileged things.
How are the fixes delivered?
As copy-paste code or a ready-made prompt you can hand back to v0. You don’t need to understand the code to apply them.
Scan another tool
Veilguard checks apps built with every major AI builder and backend.
Grade your v0 app in 60 seconds.
Free — no signup · Your code stays yours · Results in ~60s