Vibe Coded App Handoff: How to Prepare for Developers

A vibe coded app handoff is the moment your AI-built prototype stops being a solo project and becomes a team asset. You built something real on Lovable, Replit, Bolt, or Cursor, it has users or revenue, and now you want professional developers to harden it, scale it, or just understand it. What happens next depends almost entirely on how you prepare. Developers do not fear AI-generated code; they fear missing context, leaked secrets, and accounts they cannot access.

This guide is the preparation checklist, in order, grounded in the official platform and GitHub documentation. Do these six things and your first week with developers goes to real work instead of archaeology.

Step 1: Get the code into a real repository

If your app lives inside a hosted builder, the first job is getting a clean copy into a Git repository you own.

Lovable has a native GitHub integration: you can export and two-way sync your project to GitHub for backup, collaboration, and deployment, which lets developers review changes in pull requests, work locally in their IDE, and deploy outside Lovable. If you only need a snapshot, paid plans can also download the codebase directly from Project settings or the code editor. Lovable GitHub integration docs

Replit supports both a plain export (three-dot menu in the file tree, Download as zip) and a GitHub connection with optional two-way auto-sync from the Git pane. One warning from Replit's own docs: when you copy or move a project, the deployment configuration does not come with it, so note your deployment settings before you move anything. Replit projects and files docs

Whichever platform you used, the handoff unit is a GitHub (or GitLab) repository under an account you control, with the current production code as the main branch. A zip in a Drive folder is not a handoff.

Step 2: Scrub secrets before anyone clones it

AI builders happily paste API keys into code, and prompts like "add my Stripe key" end with the key committed to history. Before a developer clones the repo, assume every credential that ever touched the project is in it.

GitHub's own guidance is clear on the order of operations: rotate the credential first (treat any committed secret as compromised), then clean the history with tools like git filter-repo or BFG, because deleting a file in a new commit does not remove it from history. GitHub: removing sensitive data from a repository

The minimum pass: search the repo and its history for key patterns (sk_, pk_, AIza, eyJ, private key blocks), rotate everything you find, and move secrets into environment variables with a .env.example file documenting names without values. Our vibe coding security checklist covers the rest of the secrets-and-config surface.

Step 3: Export the data and the schema

Code without data is a demo. If your app runs on Supabase (the default for many vibe-coded apps), the database needs two things: its schema as migrations and its data as a backup.

Supabase documents both: database migrations capture schema changes as versioned SQL you can replay elsewhere, and the platform's backup and restore guides cover getting data out cleanly. Hand over a fresh dump plus the migration history so the developer can rebuild the environment locally. Supabase database migrations Supabase backup and restore

While you are in there, check your row level security posture; AI-generated Supabase schemas routinely ship with RLS disabled or policies too loose. Our Supabase RLS checklist is the fast pass. Do the same inventory for any other data stores: Stripe test vs live data, uploaded files in storage buckets, and anything in a platform-hosted database that does not export with the code.

Step 4: Write the one-page map

This step costs an hour and saves a week. Create a README (or a single doc linked from it) that answers, in plain words:

• What the app does, who uses it, and the main user flows.

• How to run it locally: install command, dev command, required environment variables, and which third-party accounts are needed.

• The architecture in a paragraph: frontend, backend or serverless functions, database, auth provider, payments, email, storage, hosting.

• Known quirks and bugs you already know about. Developers find them anyway; knowing you know builds trust instantly.

• What "done" looks like for the engagement: fix and stabilize, add features, rebuild, or production-harden.

This section is our own playbook rather than any vendor's documentation, and it is the step founders skip most. The AI wrote your code, so there is no original developer memory to interrogate. The map replaces it.

Step 5: Transfer access, not screenshots

A developer blocked on access is a developer billing you for waiting. Before day one, sort every account the app touches.

For the repository itself, GitHub supports transferring ownership of a repo to another user or organization, which preserves issues, pull requests, stars, and watchers. The cleaner path for most handoffs: transfer or share the repo into a GitHub organization you own, then add the developers as collaborators. GitHub: transferring a repository

Then the rest of the access list, each as an invitation or role grant rather than a password over chat: the hosting platform (Vercel, Netlify, or the builder itself), the database platform, the domain registrar and DNS, Stripe, the email provider, analytics, and error tracking. Where a platform supports teams or roles, use them; where it does not, transfer ownership formally rather than sharing your login.

Step 6: Save the prompt history and product decisions

The conversation that built your app is the closest thing to design documentation that exists. Export or save the chat and prompt history from your builder, and write a short decision log: why you picked this stack, which features users actually touch, what you tried and abandoned, and what you promised customers is coming.

This is again our own recommendation, not platform documentation, and it matters more for vibe-coded apps than for conventional ones. In a normal codebase, intent leaks through commit messages and code review threads built up over months. Your app was written in days by a model. The prompt history is the only record of why it looks the way it does.

What your developers will check first

Knowing the audit lens helps you prepare for it. In the first days, a competent developer will check: can they build and run the app from the README; are dependencies pinned and current enough to be safe; where the secrets live; how deployments happen; what the database schema really looks like versus what the UI assumes; and whether there are any tests at all. We wrote the full version of that lens in how to audit vibe-coded apps before launch. Preparing with the audit in mind means the answers are already in the handoff package.

If the audit surfaces deeper structural problems, the honest options are stabilize, harden, or rebuild the weak core, and our guide on going from vibe coding to production walks through that decision.

The fast path

If you would rather hand the whole package to a team that does this routinely, that is literally our service: we take founder-built, vibe-coded apps through audit, security hardening, and production launch. See vibe coding for founders for how the engagement works. Either way, do the six steps above first; they make every later option cheaper.