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PromptSharp Daily · free web issue · #117Prompt of the day
October 8, 2026 · the free cross-vertical sampler: get better at AI and prompting, and see the sharpest prompts from across the network. Today's comes from Vibe Coding.
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.
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.
Why it 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.
Use AI today — a workflow to steal
Use AI for the ugly first draft, you for the judgment
The blank page is the tax. AI removes it. Your value moves to editing and judgment — the part that's actually yours.
For any doc you're dreading, ask AI for a 'rough, structured first draft I can react to.' Reacting to a draft is far easier than facing a blank page.
- Give it the goal + your context block.
- Ask for a rough structured draft.
- Edit hard — keep 30%, rewrite the rest in your voice.
Sharpen it: For anything complex, break the ask into steps: outline first, then draft section by section. Big single asks produce shallow results; staged asks go deep.
Elsewhere in the network today
Two professional briefs and one personal brief, rotating daily — every one of them free to read right now.
Product Management
Today in Product Management: RICE the roadmap: score competing bets and expose the shaky assumptions
Dev & Engineering
Today in Dev & Engineering: Test-plan generator: risk-ranked cases from a diff or spec
Health & Fitness
Today in Health & Fitness: Appointment brief: the questions to ask before the door closes
What changed in AI today
Show HN: Chloe is a TypeScript AI agent
Map one repetitive, rules-based process on your team (intake, triage, reporting) and pilot an agent on it in a sandbox first. Measure hours saved on a single workflow before you scale it anywhere…
Look at OpenAI. That’s my quant.
Read this as a signal, not a to-do. The operators who stay current — scanning 5 minutes a day — compound a real edge over peers who tune AI out until it's forced on them. File it, watch the trend,…
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