Lovable, Bolt.new, v0, and similar AI builders are genuinely impressive at getting a working prototype from a prompt. The gap between that prototype and a production app is specific, measurable, and closeable. Here is what changes in the migration.
Data model: from implicit to explicit
AI-generated apps often have implicit data models — fields stored as stringified JSON, relations implied by naming conventions rather than enforced by foreign keys. The migration starts by writing an explicit, typed Prisma schema from what the app does, not from what the AI generated.
If the AI app uses Supabase, check the existing schema before assuming it's clean. AI tools often create tables without foreign keys or with nullable fields that should be required.
Auth: real providers replace hand-rolled sessions
AI builders often generate their own session handling. The migration replaces this with Clerk, Auth.js, or Auth0. The user table migrates to the provider, and existing sessions are invalidated. Plan for a re-login event in your user communication.
Backend: actions become typed and tested
AI-generated API routes are untyped, often untested, and sometimes duplicated. The migration rewrites every API route as a typed Server Action or tRPC procedure with Zod input validation. At the same time, every route gets a test asserting its authorization logic.
What you do NOT need to rebuild
- The UI — Lovable's React output is usually clean enough to keep. Tailwind classes migrate without change.
- Third-party integrations that are already wrapped in an SDK — Stripe, Resend, etc.
- The routing structure — Next.js App Router matches Lovable's file-based approach.
The result
After migration: typed codebase, tested API layer, real auth, CI pipeline, error tracking, structured logs. The same product, owned. Most teams keep the FullCode-migrated codebase for 3+ years without touching the architecture.
Migration from Lovable, Bolt, v0, or Cursor starts at $1,975. Free architecture audit and fixed-price quote in 48 hours.