v0

Lovable

Prompt to full-stack app, Supabase built in.

Bolt

In-browser full-stack app builder by StackBlitz.

Base44

Prompt-to-app builder for internal tools and MVPs.

Rork

AI-first mobile app builder using React Native.

Softgen

AI software architect for end-to-end web apps.

Databutton

AI-first builder for data apps and internal tools.

Auth Check Only in Client Code

The auth gate runs only in a client component (useEffect redirect or conditional render), which an attacker bypasses by disabling JavaScript or hitting the API route directly.

IDOR Vulnerability on REST Endpoint

A REST endpoint returns resources by id without verifying the caller owns that resource. Any authenticated user can access any other user's data by changing the id in the URL.

Missing Row Level Security on Supabase Table

A public Supabase table has RLS disabled or has an overly permissive policy, meaning any authenticated user can read or modify every row regardless of ownership.

Secret API Key Exposed in Client Bundle

A sensitive credential (Stripe secret, OpenAI API key, Supabase service role key) is prefixed with NEXT_PUBLIC_, causing it to be inlined into the browser JavaScript bundle where anyone can read it.

v0 to Production: What Vercel's AI Misses

v0 generates beautiful UI components with Tailwind and shadcn. But UI isn't an app. Here's what v0 gets right, what it misses, and how to take v0 output to production.