Ask Claude what it thinks of your plan and you usually get a helpful, balanced answer. This prompt gets you the hard version first: the one hole most likely to sink the plan, the math, and the case against it.
Here's how it works, the prompt itself, and what a real run looked like.
How it works
- Paste the prompt into Claude, then paste your plan, idea, draft or decision where it says MY PLAN. Give it your real numbers.
- THE HOLE: Claude names the single weakest point in your plan and quotes your own words.
- THE MATH: it checks every number you gave and says plainly if it does not work.
- WHAT YOU ARE NOT SAYING: the questions someone who has done this would ask first.
- THE STRONGEST CASE AGAINST: 3 sentences, as if it wanted you to stop.
- YOUR VERDICT: go, change it, or stop, plus the one thing that would change its mind. Then the 3 changes that fix the biggest problems, in order.
Free, for your email
Get the full setup steps + the copy-paste setup prompt
The rest of this guide (4 more sections, 1 copy-paste prompt) opens right here. The setup prompt, one paste into Claude that sets it all up, comes by email only. Use your real address.
Unlocks: The prompt · A real run · Good to know · Sources
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