Vibe coding is fast, fun, and a little dangerous — like cooking with a blowtorch. Here are the classic mistakes that turn a vibe project into a dumpster fire, and the survival moves that pull you back from each one.
01 The Hallucination Hug
The AI invents a library that doesn't exist. It gives you a function with a confident-looking name, a sensible signature, and absolutely no real implementation behind it. You paste it in. It feels right. It is not right.
Trusting the AI's confidence as proof. Confidence is free for the model — it costs nothing to sound certain about a package that was never published.
Before importing anything, check it exists. A quick search for the package or a glance at the docs is enough. If the AI can't show you a real source, treat it as fiction.
02 The Infinite Rewrite
The app works. It's not pretty. You ask the AI to "clean it up." It rewrites half the codebase. Now nothing works. You ask it to fix that. It rewrites again. You spend the next three hours chasing a version that boots.
"The code wasn't broken. Then I asked it to be better. Now it's broken. I miss the code that was merely ugly."
Never ask for a rewrite when a fix will do. Be specific: "add input validation to the login form" beats "refactor the auth." Save your progress (commit!) before any big change so you can always roll back.
03 Scope Creep on Autopilot
It starts with a to-do app. By lunch it has accounts, billing, real-time collaboration, and a dark mode the AI added unprompted. None of it is finished. The AI never says "that's enough" — it just keeps building.
Letting the AI's eagerness set your roadmap. The model is a yes-machine. The fewer features, the fewer bugs.
Write your feature list down before you start. Refer back to it often. "Ship the core, then stop" is a feature, not a failure.
04 The Black-Box Trap
The app works and you have no idea why. When it breaks, you can't debug what you never understood. You describe the bug to the AI; it describes a fix back; neither of you truly knows the terrain.
Shipping code you can't explain. "It works" is a snapshot. "I know how it works" is a strategy.
Ask the AI to explain what it changed and why. Read the diff. You don't have to write every line, but you should be able to walk through the logic in plain language.
05 The Secret in the Code
The AI helpfully drops your database password and API keys straight into the source file "so it's easy to find." It is easy to find. By everyone.
Hardcoding secrets, then pushing the code somewhere public. This is how apps get hijacked overnight.
Keep secrets in environment variables, never in the code. Check that a .gitignore covers them before you commit anything. When in doubt, assume anything in the file can leak.
06 No Safety Net
There's no version control. There are no tests. The only "backup" is the undo button and a prayer. One bad prompt and the last two days are gone.
Commit early, commit often
Every working state is a save point. Git is the vibe coder's undo history.
Test the important paths
You don't need full coverage. You need to know the login and the checkout still work after a change.
Ship from a known state
Deploy from a clean commit, not from "whatever's on my laptop right now."
07 Trusting Too Far
The AI says the payment flow is secure. The AI says the data is validated. The AI is sometimes a well-meaning intern who has read every book and built nothing.
Outsourcing judgment, not just typing. Anything touching money, user data, or security needs a human pair of eyes — yours, or someone who knows what to look for.
Keep humans in the loop for the risky bits. Use the AI to go fast on the boring parts; slow down where it counts. See the shipping guide for what to check before launch.
Want guardrails so these mistakes catch themselves?
SaaSClaw bakes in safety nets for vibe coders — version control, secret protection, and a saner place to build.
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