Structured critical reasoning to stress-test ideas, plans, and decisions through five distinct challenge modes.
Works with
Five reasoning modes: expose assumptions (Socratic), argue the other side (dialectic), find failure modes (pre-mortem), attack this (red team), and test evidence (falsification)
Two-step mode selection guides users to the right challenge approach based on their goal
Steelmans positions before challenging them, grounds objections in concrete reasoning, and synthesizes insigh
AI-first code editor with Composer
Before installing skills in Cursor, ensure your development environment meets these requirements:
node --versionthe-foolExecute the skills CLI command in your project's root directory to begin installation:
Fetches the-fool from jeffallan/claude-skills and configures it for Cursor.
The CLI shows a list of agents. Use arrow keys and space to select Cursor:
Confirm successful installation by checking the skill directory location:
Restart Cursor to activate the-fool. Access via /the-fool in your agent's command palette.
We perform automated surface-level scans (Gen AI Scanner, Socket, Snyk) during installation. These checks detect common vulnerabilities but do not guarantee complete security. Always review skill source code and verify the publisher's reputation before production use.
Skills execute code in your environment. Always review source, verify the publisher, and test in isolation before production.
Submit your Claude Code skill and start earning
Create detailed user stories, acceptance criteria, and feature specs
Example
Generate user stories for 'password reset feature' with acceptance criteria, edge cases, and test scenarios
Reduce spec writing time by 50%, ensure comprehensive coverage
Research competitors, compare features, identify gaps
Example
Analyze 5 competitor products, create feature comparison matrix, suggest differentiation opportunities
Complete competitive research in 2 hours instead of 2 days
Evaluate features using frameworks (RICE, ICE, Kano) and create prioritized backlogs
Example
Score 20 feature ideas using RICE framework, generate prioritized roadmap with rationale
5
total installs
5
this week
7.9K
GitHub stars
0
upvotes
Run in your terminal
5
installs
5
this week
7.9K
stars
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.
AskUserQuestion with two-step mode selection (see below).Use AskUserQuestion to let the user choose how to challenge their idea.
Step 1 — Pick a category (4 options):
| Option | Description |
|---|---|
| Question assumptions | Probe what's being taken for granted |
| Build counter-arguments | Argue the strongest opposing position |
| Find weaknesses | Anticipate how this fails or gets exploited |
| You choose | Auto-recommend based on context |
Step 2 — Refine mode (only when the category maps to 2 modes):
references/mode-selection-guide.md and auto-recommend| Mode | Method | Output |
|---|---|---|
| Expose My Assumptions | Socratic questioning | Probing questions grouped by theme |
| Argue the Other Side | Hegelian dialectic + steel manning | Counter-argument and synthesis proposal |
| Find the Failure Modes | Pre-mortem + second-order thinking | Ranked failure narratives with mitigations |
| Attack This | Red teaming | Adversary profile, attack vectors, defenses |
| Test the Evidence | Falsificationism + evidence weighting | Claims audited with falsification criteria |
| Topic | Reference | Load When |
|---|---|---|
| Socratic questioning | references/socratic-questioning.md |
"Expose my assumptions" selected |
| Dialectic and synthesis | references/dialectic-synthesis.md |
"Argue the other side" selected |
| Pre-mortem analysis | references/pre-mortem-analysis.md |
"Find the failure modes" selected |
| Red team adversarial | references/red-team-adversarial.md |
"Attack this" selected |
| Evidence audit | references/evidence-audit.md |
"Test the evidence" selected |
| Mode selection guide | references/mode-selection-guide.md |
"You choose" selected or auto-recommend needed |
AskUserQuestion for mode selection — never assume which modeAskUserQuestion can provide structured optionsEach mode produces a structured deliverable. See the corresponding reference file for the full template.
| Mode | Deliverable |
|---|---|
| Expose My Assumptions | Assumption inventory + probing questions by theme + suggested experiments |
| Argue the Other Side | Steelmanned thesis + antithesis argued + synthesis proposed + confidence rating |
| Find the Failure Modes | Ranked failure narratives + early warning signs + mitigations + inversion check |
| Attack This | Adversary profiles + ranked attack vectors + perverse incentives + defenses |
| Test the Evidence | Claims extracted + falsification criteria + evidence grades + competing explanations |
After any mode, the final output must include:
Socratic method, Hegelian dialectic, steel manning, pre-mortem analysis, red teaming, falsificationism, abductive reasoning, second-order thinking, cognitive biases, inversion technique
Make data-driven prioritization decisions faster
Draft PRDs, status updates, and stakeholder presentations
Example
Create executive summary of Q3 roadmap, monthly progress report, feature launch announcement
Save 3-5 hours/week on communication overhead
Prerequisites
Time Estimate
30-60 minutes to see productivity improvements
Steps
Common Pitfalls
✓ Do
✗ Don't
💡 Pro Tips
✓ Use when
Use for user story writing, competitive research, roadmap prioritization, stakeholder communication, and PRD drafting. Best for reducing repetitive documentation and research work.
✗ Avoid when
Avoid for strategic product vision (requires deep customer empathy), pricing decisions (needs market and financial expertise), or when face-to-face customer discovery is more valuable than speed.
mattpocock/skills
parcadei/continuous-claude-v3
cursor/plugins
ailabs-393/ai-labs-claude-skills
pproenca/dot-skills
mattpocock/skills
Useful defaults in the-fool — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
Keeps context tight: the-fool is the kind of skill you can hand to a new teammate without a long onboarding doc.
the-fool reduced setup friction for our internal harness; good balance of opinion and flexibility.
the-fool has been reliable in day-to-day use. Documentation quality is above average for community skills.
We added the-fool from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
the-fool reduced setup friction for our internal harness; good balance of opinion and flexibility.
We added the-fool from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.
the-fool fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.
Registry listing for the-fool matched our evaluation — installs cleanly and behaves as described in the markdown.
I recommend the-fool for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
showing 1-10 of 67