cc-thinking-skills: 28 eval-informed mental models and critical-thinking skills for Claude Code, GitHub Copilot, Codex, Cursor

by tjboudreaux · Claude Skill · ★ 1.3k

Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h

How to install cc-thinking-skills

/plugin marketplace add tjboudreaux/cc-thinking-skills
git clone https://github.com/tjboudreaux/cc-thinking-skills.git

Taken from the project's README on GitHub. Check the security audit before running it.

Security audit verdict: SAFE · quality 74/100

None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

agent-skillsai-toolsanthropicclaudeclaude-codecritical-thinkingdecision-makingfirst-principlesmental-modelsproblem-solving

Quick Facts

Stars1,317
Forks158
LanguageJavaScript
CategoryClaude Skill
LicenseMIT
Quality Score74/100
Open Issues4
Last Updated2026-08-07
Created2026-01-28
Platformsclaude-code, codex, node
Est. Tokens~16k

About cc-thinking-skills

Claude Code Thinking Skills 39 Mental Models and Frameworks for Critical Thinking in Claude Code A comprehensive collection of thinking skills for Claude Code that enhance AI-assisted problem solving, decision making, and strategic analysis. These skills provide structured frameworks based on proven mental models from leaders in systems thinking, cognitive science, and strategic analysis.

Compatible Skills

These tools work well together with cc-thinking-skills for enhanced workflows:

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How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

View on GitHub → Browse Claude Skill tools