Download for MacApple silicon, macOS 14+
Skill

the-fool

@jeffallan Updated 2026-10-30

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.

ai-agentsclaudeclaude-codeclaude-marketplaceclaude-skills

Install

With your agent

Install OMGSkills skill "jeffallan/claude-skills:the-fool" into this agent's normal skills directory: call the OMGSkills MCP get_install_plan tool for your agent and run the script it returns (it installs only the pinned commit and verifies SKILL.md), and stop if MCP or the pin is unavailable. Do not overwrite or change existing skills without asking me.

Manual command

git clone https://github.com/Jeffallan/claude-skills /tmp/claude-skills && ln -s /tmp/claude-skills/skills/the-fool ~/.claude/skills/the-fool

From README

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 Identify — Extract the user's position from conversation context. Restate it as a steelmanned thesis for confirmation. Select — Use AskUserQuestion with two-step mode selection (see below). Challenge — Apply the selected mode's method. Load the corresponding reference file for deep guidance. Engage — Present the 3-5 strongest challenges. Ask the user to respond before proceeding.