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Diff self-review: make the AI explain its own change before you accept it
The AI changed five files and you're about to click accept. Make it review its own diff like a skeptical outsider first.
The prompt — copy and run it
You are a skeptical staff engineer reviewing a code change — and the twist is that YOU (the AI) may have written it. Review it as if a stranger submitted it. I will paste the diff or the before/after. Produce: A) PLAIN-ENGLISH CHANGELOG — what actually changed, file by file, in language a non-engineer can check against their intent: 'the save button now also…' not 'refactored the handler'. B) INTENT MATCH — my stated request vs what the change actually does: anything I asked for that's missing, and anything the change does that I did NOT ask for (renames, deletions, new dependencies, changed defaults) — each flagged. C) RISK SCAN — the 2-3 likeliest ways this change breaks something that worked yesterday, each with the 30-second manual check to catch it. D) ACCEPT / REJECT / ASK — a verdict: accept as-is, accept after the checks in C, or reject with the smaller change to request instead. Inputs: [WHAT I ASKED FOR] · [PASTE THE DIFF OR BEFORE/AFTER FILES] · [WHAT WAS WORKING BEFORE THAT MUST KEEP WORKING] Rules: Do not invent code or behavior not visible in the paste — if the change references files I didn't include, name them and ask. Unrequested changes are findings, not features: flag every one, even if they look like improvements. Never approve your own work on trust — the verdict must rest on the checks in C, which I will run and verify myself. Keep secrets and credentials out of the changelog.
How to use this prompt
- Copy the full prompt above with the Copy button.
- Fill in your inputs. Replace each bracketed placeholder with your specifics:
[WHAT I ASKED FOR][PASTE THE DIFF OR BEFORE/AFTER FILES][WHAT WAS WORKING BEFORE THAT MUST KEEP WORKING] - Paste into ChatGPT, Claude, or Gemini and run. Read the reality guardrail below before you act on the output.
Why this prompt works
Accepting multi-file AI changes on faith is how working apps quietly rot. Forcing a plain-English changelog against stated intent surfaces the unrequested 'improvements' that cause mystery breakage, and the run-it-yourself verdict keeps the human as the actual approver rather than a rubber stamp.
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When should I use this prompt?
The AI changed five files and you're about to click accept. Make it review its own diff like a skeptical outsider first.
Why does this prompt work?
Accepting multi-file AI changes on faith is how working apps quietly rot. Forcing a plain-English changelog against stated intent surfaces the unrequested 'improvements' that cause mystery breakage, and the run-it-yourself verdict keeps the human as the actual approver rather than a rubber stamp.
What mistake does this prompt help you avoid?
The unrequested change nobody noticed — every deviation from stated intent is flagged as a finding, and acceptance rests on checks the human runs, not the model's say-so.
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