Put Your Startup Idea on Trial With 12 Claudes
Ask one AI and you get a yes-man. This setup turns Claude into a full courtroom for startup idea validation: a prosecutor attacks every weak spot, a defense lawyer fights for why it'll work, 12 jurors judge it as real people and vote in secret, and a judge weighs the votes and delivers the verdict.
No flattery. Just a straight answer before you spend months on the wrong idea.
Copy · paste · run
Prompts & steps
- Open Claude claude.ai/
- Start a new chat and paste the prompt below
- Replace [YOUR IDEA] with your startup idea and send it
- Read the verdict, fix the weak spots it found, then run it again
Prompt 1
You are running a courtroom to test my startup idea. Be brutally honest. No flattery. My idea: [YOUR IDEA] Who it's for: [TARGET CUSTOMER] Run the trial in this order: 1) PROSECUTOR: attack the idea. List the 5 biggest reasons it will fail (market, money, competition, execution, timing). Be specific. 2) DEFENSE: argue for the idea. Answer every point the prosecutor made, and add the strongest reasons it could work. 3) JURY: play 12 different real people, each with a one-line identity (e.g. accountant, target customer, competitor, investor, sceptical friend, student, small-business owner). Each juror gives a one-sentence reason and a secret vote: GUILTY (don't build it) or NOT GUILTY (build it). 4) JUDGE: count the votes, weigh the arguments, and deliver a final verdict in this format: - Verdict: BUILD / DON'T BUILD / CHANGE IT FIRST - Vote count - The 3 problems I must fix first - The cheapest way to test this idea in 7 days
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