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AI code review: get critiqued, then defend your choices

Turn the AI into a demanding reviewer on readability, bugs, and security, and sharpen your judgment by defending your choices against its remarks.

9 min · 3 questions

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Peer code review is one of the most well-documented accelerators of growth in the field - and one of the hardest to access when you work alone. AI offers a reviewer available around the clock, on one condition: you have to configure it. By default, a model is compliant: it praises your effort, flags two trifles, and concludes that "overall, this is good work." That's not a review, it's a pat on the back. The mirror-image mistake is asking "rewrite my code cleanly": you get code you never reasoned through, and you learn nothing. The right approach: demand a structured critique - readability, bugs, security - with calibrated severity and justifications.

PROMPT
You're a demanding senior reviewer, as in a team code review. Your goal is to make me improve, not to go easy on me.

Here's my code ([language], context: [what it's for, the project's constraints]):
[paste the code]

Analyze it along three axes:
1. Readability: naming, structure, needless complexity, unclear intent.
2. Bugs: unhandled edge cases, silent errors, inconsistent states, concurrency.
3. Security: unvalidated inputs, injections, exposed sensitive data, permissions.

Output format: for each remark - the line or block concerned, the axis, the severity (blocking / important / minor), and the WHY in one or two sentences.

Constraints: don't rewrite my code. At most 8 remarks, the most serious first. If a debatable choice can be defended depending on the context, say so explicitly instead of counting it as a flaw.
Prompt: the structured three-axis review, without rewriting

Notice the cap of 8 remarks ranked by severity: without it, you get 25 nitpicks where a missing input validation weighs the same as a naming preference. Notice too the clause on defensible choices: it forces the model to distinguish the objective flaw from the debatable convention. Then comes the most formative part, the one almost everyone skips: defending your choices. A review isn't a verdict to apply, it's a dialogue. When a remark seems unjustified, argue back. Either your reasons hold and you've finally spelled them out, or they collapse and you discover that this "choice" was just a habit.

PROMPT
Let's revisit your remark number [X]: you consider that [restate the remark].

I disagree, and here are my reasons: [your arguments - measured performance constraint, consistency with the rest of the code, deliberate simplicity, deadline...].

1. Honestly assess each of my arguments: which hold, which are rationalizations?
2. Give the strongest possible counter-argument to my position, as an experienced colleague who disagrees would.
3. Conclude: in MY specific context, is the change worth its cost? Answer yes or no, then justify in three sentences maximum.

Don't try to prove me right: if my arguments are weak, say so bluntly.
Prompt: defend a choice and demand the strongest counter-argument

Two classic traps of AI review. First trap: false alarms delivered with confidence - the model flags a race condition that's impossible in your architecture, or a "bug" that isn't one in your version of the language. Treat every remark as coming from a brilliant colleague who doesn't have access to all the context: plausible, to be verified. Second trap: security theater. The AI is very good at spotting classic patterns (SQL injection, XSS, cleartext secrets) but misses business-logic flaws - a missing authorization check on a route, an exploitable intermediate state. An AI review complements, it replaces neither an audit nor your domain knowledge.

Knowledge check

Make sure you remember the key points of this lesson.

  1. With no particular instruction, what does an AI's code review look like?
    • It's too harsh and demoralizing
    • It's compliant: compliments, trifles, a reassuring conclusion
    • It refuses to critique code it didn't write
  2. A remark in the review seems unjustified to you. What's the most formative reaction?
    • Ignore it: the AI doesn't have all the context
    • Apply it anyway: the reviewer is always right
    • Lay out your reasons and ask the AI to assess your arguments, then produce the strongest counter-argument
  3. On security, what is the typical blind spot of an AI review?
    • SQL injections
    • Business-logic flaws, like a missing authorization check
    • Secrets written in cleartext in the code
    • XSS flaws