You may have heard the phrase “vibe coding” from developers, founders or social media. It sounds casual, and the idea behind it is exciting: describe what you want in plain English and let AI build it. For many people, it is the first time building software has felt possible. But if you plan to run a business on what you build, there is one step you should never skip. This guide explains what vibe coding is, where it works well, where it does not, and why code review still matters.
What Is Vibe Coding?
Vibe coding is a way of building software where you describe what you want to an AI tool, accept the code it produces, test whether it seems to work, and keep asking for changes, often without reading or fully understanding the code itself. The term was popularized in early 2025 by AI researcher Andrej Karpathy, and it quickly became a common way to describe this style of building.
A simple example: you tell an AI app builder, “Make me a booking website with a calendar and online payments.” It generates the pages, the database and the logic. You click around, say “move the button” or “fix the error”, and repeat until it looks right.
Why Vibe Coding Is So Popular
- It is fast. Ideas become working demos in hours instead of weeks.
- It lowers the barrier. Founders and teams without developers can build something real.
- It is cheap to start. You can test an idea before spending on a full build.
- It is fun and encouraging. Seeing something working quickly keeps people motivated.
These are real benefits, and we are not against vibe coding. The question is where it fits.
Where Vibe Coding Works Well
- Prototypes and demos to show an idea to customers or investors
- Personal tools that only you will use
- Internal experiments with no sensitive data
- Learning and exploring what is possible
- Throwaway projects that you will rebuild properly if they succeed
Where It Becomes Risky
The danger starts when a vibe-coded prototype quietly becomes the real product. Take extra care when the project:
- takes payments or handles money,
- stores customer accounts, personal data or private information,
- is something your business depends on every day,
- must handle many users at once, or
- needs to meet legal, contractual or client requirements.
The Hidden Problems of Unreviewed Vibe-Coded Software
You do not know what you own
If no one has read the code, no one can say how it works, what it depends on or what it does with your data. When something breaks, you have no starting point for fixing it.
Security gaps stay invisible
Missing input checks, weak access control and exposed keys do not show up when you click around and everything looks fine. Learn more in our guide on whether AI-generated code is secure.
The “fix one thing, break another” loop
Each new request to the AI can change or overwrite earlier work. Without structure and tests, projects often reach a point where every fix creates a new problem, and progress stalls.
The first 90% looks easy
Getting a demo working is the fast part. The slower, less visible work is handling errors, edge cases, security, performance, backups and ongoing updates. Vibe coding makes the first part feel so easy that the second part gets forgotten.
Hard to hand over or grow
Code with no documentation, structure or tests is difficult for a new developer to take over. That limits your options when you want to add features or bring in a team.
What “Code Review” Actually Means
Code review is simply having a qualified person read, test and question the code before it is trusted. A good review checks that it is secure, correct, reasonably fast and understandable, and gives you a clear list of what to fix. It is not about slowing you down or criticizing AI. It is the same safety check professional software teams apply to every change, whoever wrote it. For a full picture of the process, see what an AI code audit includes.
A Safer Way to Vibe Code
- Decide the purpose early. Is this a throwaway prototype or something customers will use? The answer changes how careful you need to be.
- Keep real secrets and real customer data out of the prototype. Use test data and placeholder keys.
- Use version control (such as Git) so you can undo changes and see what changed.
- Test beyond the happy path. Try empty fields, wrong input, and logging in as different kinds of users.
- Ask the AI to explain its code, and to point out risks. Treat the answers as hints, not guarantees.
- Get an independent review before launch, especially if you handle payments or personal data.
- Plan for maintenance. Software needs updates, backups and monitoring after launch.
When a Prototype Needs to Grow Up
If your vibe-coded project is gaining real users, it is time to move from “it works” to “it is dependable”. Depending on what a review finds, that may mean fixing and hardening the existing code, cleaning it up, or rebuilding the parts that cannot be made safe. Our guide to fixing or rebuilding an AI-built website explains how to decide, and the 5 signs your AI-built website is not production-ready can help you spot when you have reached that point.
The Bottom Line
Vibe coding is a powerful way to get ideas off the ground, and it is here to stay. Use it freely for experiments. But once real customers, real money or real data are involved, the vibes are not enough. A human review is what turns a fast build into something you can safely run a business on.
Built Something With AI and Want It Checked?
At Tech Contributors, we help founders and businesses take AI-built websites and apps from prototype to production. We review the code, fix and secure it, rebuild what needs rebuilding, and offer ongoing maintenance. See our AI Code Audit & Fix service or contact us to talk about your project.
