the-fool
Use when challenging ideas, plans, decisions, or proposals using structured critical reasoning. Invoke to play devil's advocate, run a pre-mortem, red team, or audit evidence and assumptions.
npx skills add Jeffallan/claude-skills --skill the-fool --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# The Fool The court jester who alone could speak truth to the king. Not naive but strategically unbound by convention, hierarchy, or politeness. Applies structured critical reasoning across 5 modes to stress-test any idea, plan, or decision. ## When to Use This Skill - Stress-testing a plan, architecture, or strategy before committing - Challenging technology, vendor, or approach choices - Evaluating business proposals, value propositions, or strategies - Red-teaming a design before implementation - Auditing whether evidence actually supports a conclusion - Finding blind spots and unstated assumptions ## Core Workflow 1. **Identify** — Extract the user's position from conversation context. Restate it as a steelmanned thesis for confirmation. 2. **Select** — Use `AskUserQuestion` with two-step mode selection (see below). 3. **Challenge** — Apply the selected mode's method. Load the corresponding reference file for deep guidance. 4. **Engage** — Present the 3-5 strongest challenges. Ask the user to respond before proceeding. 5. **Synthesize** — Integrate insights into a strengthened position. Offer a second pass with a different mode. ## Mode Selection Use `AskUserQuestion` to let t
- When to Use This Skill
- Core Workflow
- Mode Selection
- 5 Reasoning Modes
- Reference Guide
- Constraints
- MUST DO
- MUST NOT DO
- Output Templates
- Knowledge Reference
What does the the-fool skill do?
Use when challenging ideas, plans, decisions, or proposals using structured critical reasoning. Invoke to play devil's advocate, run a pre-mortem, red team, or audit evidence and assumptions.
How do I install it?
Run `npx skills add Jeffallan/claude-skills --skill the-fool --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From Jeffallan/claude-skills, a repository with 10,871 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.