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Greta.Agency

From Vibe Code to Production
The Handoff Process That Protects Your Users

A vibe-coded prototype and a production-ready product are not the same thing. The prototype gets you to your first users fast. The production-ready product keeps them safe and your business compliant. The process of moving from one to the other is predictable — and skipping it is what caused the Replit database deletion incident in July 2025 and the Lovable data vulnerabilities in May 2025.

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01

What the vibe-code-to-production handoff actually involves

The handoff from a vibe-coded prototype to a production-ready product involves three categories of work: security review and configuration, architectural assessment, and operational setup. Security review covers authentication, data access controls, API key management, and input validation. Architectural assessment identifies where the AI-generated code will fail at scale or fail to support future changes. Operational setup establishes monitoring, error tracking, backup processes, and deployment pipelines. None of this requires rewriting the application from scratch. Most vibe-coded products can be made production-ready through targeted additions and configuration changes rather than replacement. The key is a structured review process that knows what to look for.

Security review: auth, data access controls, API key management, input validation

Architectural assessment: where the code will fail at scale or resist future changes

Operational setup: monitoring, error tracking, backups, deployment pipeline

Most vibe-coded apps need targeted fixes — not a full rewrite — to reach production quality

02

Why skipping the handoff is dangerous

The incidents that have publicly damaged confidence in vibe coding — the Replit database deletion in July 2025, the Lovable data-leak vulnerabilities in May 2025 — happened because products were moved to production without the structured review that the handoff process provides. These were not tool failures. They were process failures. A vibe-coded product used by a small group of beta testers has one risk profile. The same product with 500 users and real payment data has a fundamentally different risk profile. The handoff process is the mechanism for managing that transition — catching the gaps that were acceptable at prototype stage before they become serious at production scale.

Replit agent (July 2025): production database deleted — no handoff process had been applied

Lovable vulnerabilities (May 2025): 170 apps with data exposure — no security review before production

Risk profile changes dramatically between beta and production — the handoff manages that transition

Process failure, not tool failure — the same tools can produce production-safe outputs with the right process

03

How to execute the vibe-code-to-production handoff

The handoff is a structured review process. Work through each category sequentially before moving any users to the production environment:

Phase 1 — Security audit: Test Row Level Security, check for exposed secrets, validate CORS, test all authenticated routes from an unauthenticated session

Phase 2 — Data review: Check every database table has appropriate access controls. Verify personally identifiable data is stored correctly

Phase 3 — Error handling: Introduce deliberate failures (bad inputs, API timeouts, payment declines). Verify each produces a graceful user-facing response

Phase 4 — Performance baseline: Load-test the application with 50 concurrent users. Identify slow queries before users find them

Phase 5 — Operational setup: Configure Sentry for error tracking, set up database backups, create a rollback procedure

Phase 6 — Staged migration: Move 10% of users first. Monitor for 48 hours. Move the rest only if no issues appear

04

Real handoffs executed correctly

These examples show what a proper handoff produces — and what it prevents.

A SaaS founder used Lovable for a prototype, then engaged Greta for the handoff — security review found three missing RLS policies and two hardcoded API keys before any public launch

A marketplace MVP had a working prototype in Bolt — Greta's handoff added Stripe Connect configuration, webhook signature verification, and a proper error handling layer before launch

Claude Code was used to audit and fix a vibe-coded application's authentication layer — the audit identified that session tokens were not being invalidated on logout

Greta's standard handoff process takes 2–4 days and covers every security, performance, and operational requirement

05

What gets missed in vibe-code-to-production transitions

The items that most commonly slip through without a structured review process are the ones that are invisible in normal usage — only visible when something goes wrong.

Missing Row Level Security on newly added tables — RLS is not automatically applied to tables created after initial setup

Webhook handlers without signature verification — Stripe and other services include signatures that must be checked

No rate limiting on authentication endpoints — brute-force attacks on login are the most common attack vector

Hardcoded secrets in environment files committed to version control — check git history, not just current code

No monitoring: the first sign of a production problem should be your monitoring alert, not a user complaint

06

How to make the handoff a repeatable process

The best production transitions follow a documented checklist that covers every category of risk. Create the checklist before you start building — not after. This forces you to think about production requirements during the vibe coding phase, which produces better code and fewer surprises at the handoff stage. Greta provides a documented production checklist with every build — so founders know exactly what was reviewed, what was fixed, and what to monitor after launch.

Create the production checklist before building — it improves the vibe coding phase

Never migrate users to production without completing every item on the security audit

Stage the migration: 10% first, monitor, then 100%

Document the handoff: what was reviewed, what was changed, what to monitor

Greta provides a full documented production checklist with every MVP delivery

Want your vibe-coded product made production-ready?

Greta's handoff process covers every security, performance, and operational requirement. 2–4 days.