Idea to prototype with vibe coding—without fooling yourself
“Vibe coding” caught on because it names something real: you describe intent in natural language, an assistant proposes structure, and you iterate quickly enough that the product starts to feel discovered rather than constructed. Used well, it compresses time-to-learning. Used badly, it creates demos that lie about security, ownership, and operational reality.
What vibe coding is great at
Exploration. Unknown unknowns surface when you can spin five UI variants before lunch. Boilerplate. Auth scaffolding, CRUD, form validation—the tedious spine of honest apps. Translation. Turning a founder’s messy brief into a backlog with acceptance-shaped sentences.
Where it stops being enough
Production is not a longer vibe session. It’s threat modelling, observability, migrations, and the discipline to delete clever code that passed the demo but fails compliance review. The prototype phase should explicitly answer: what belief about users are we testing? Anything else is decoration.
Guardrails we use internally
- One hypothesis per slice. If the slice tries to prove pricing, onboarding, and retention at once, you learned nothing.
- Human review of generated security paths. Especially secrets, auth callbacks, and anything that touches PII.
- A kill date. Prototype code in main beyond N weeks needs a ticket: promote, refactor, or delete.
Handing off to “real” engineering
The best vibe-coded prototypes come with receipts: user quotes, failure logs, and a ranked list of assumptions. That makes the next phase—hardening, Bedrock agents, or a proper CI pipeline—a migration plan, not a rewrite triggered by panic.