Free Claude skill

IdeaCourt.

Claude tends to say yes to your idea. This skill puts it on trial instead.

Free with an account. No password: you get a login link by email, and it stays in your library.

Price
Free
Made by
Pontus Henriksson
Works in
Claude Code and Claude.ai
What it is
One SKILL.md file, zipped in an idea-court folder

How the trial works.

  1. 01

    You pitch the idea

    Claude writes a short case file: the idea, who it is for, how it makes money, how customers find it and what they use today. If two or more are missing it asks at most three questions. Anything still unknown is written down as an assumption.

  2. 02

    Prosecution and defence

    A prosecutor argues it will fail, a defender argues it will work. They run as separate agents and only see the case file, never each other's brief. At most five points each, with what every point rests on and what would disprove it.

  3. 03

    12 jurors vote blind

    Each juror gets the case file, both briefs and its own role, and never another juror's vote. Every vote is guilty or not guilty, with a confidence from 1 to 5, one deciding reason and the one thing that would flip it.

  4. 04

    Every juror has a role

    Twelve points of view, so the downsides get argued too.

    • 01AccountantCosts, margins, cash flow, time to pay back
    • 02Target customerWould I pay for this today
    • 03CompetitorHow fast I could copy it or crush it
    • 04InvestorSize of the prize, growth, what stops others
    • 05Skeptical friendReal problem or just a nice idea
    • 06First-time userThe first five minutes, setup friction
    • 07SalespersonCan I sell it in one call
    • 08EngineerCan it be built and kept running
    • 09LawyerLegal, privacy and liability risk
    • 10MarketerCan the right people find it
    • 11Operations managerWhat breaks at ten times the volume
    • 12Budget holderWould I approve this over other priorities
  5. 05

    The judge rules

    A judge reads everything and counts the not guilty votes. It may overrule the tally only by naming the exact charge or argument that decides it.

    • Build it8 or more not guilty, and no fatal charge left unanswered.
    • Fix first5 to 7 not guilty, or a fatal charge most jurors share.
    • Drop it4 or fewer not guilty.

What you get back.

One short verdict, not a wall of text. This is the shape every ruling comes in. Ask for the transcript if you want both briefs and all 12 votes.

The formatNot a real result

Verdict

Build it / Fix first / Drop it

Jury: n not guilty, n guilty

Why it can work

Why it could fail

Fix these first

At most three concrete changes.

Cheapest test this week

One experiment that would change the verdict, and what counts as a pass.

Under 400 words, in the language you wrote in. The full transcript is offered after.

Install.

Claude Code

  1. 1Download the zip and unzip it.
  2. 2Put the idea-court folder in ~/.claude/skills/ for every project, or in .claude/skills/ inside one project.
  3. 3Say "put my idea on trial: ..." or type /idea-court.
unzip ~/Downloads/idea-court.zip -d ~/.claude/skills/

Each juror runs as its own agent, so the vote is actually blind.

Claude.ai

  1. 1Download the zip. Keep it zipped. Code execution must be on (Settings › Capabilities).
  2. 2Go to Customize › Skills, click +, then upload the zip.
  3. 3Ask Claude to judge your idea.

The roles are played one by one in the same chat, so the blind vote is simulated and less independent.

A thinking tool, not market research.

The court only knows what you tell it. Numbers you do not provide are treated as assumptions and labelled that way, never invented. The lawyer on the jury is a point of view, not legal advice.