Audit the reasoning of a document or argument (memo, proposal, investment analysis, board paper, article, the user's own draft): claims, evidence, unstated assumptions, logical gaps, fallacies, and what would falsify it, each anchored to quoted text.
Install
npx skills add tronghieu/agent-skills --skill critical-thinkingnpx skills add tronghieu/agent-skills --skill critical-thinking -a claude-code -gnpx skills add tronghieu/agent-skills --skill critical-thinking -a codex -ggemini skills install https://github.com/tronghieu/agent-skills.git --path skills/critical-thinkinggh skill install tronghieu/agent-skills critical-thinkinggit clone --depth 1 https://github.com/tronghieu/agent-skills /tmp/tronghieu__agent-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/tronghieu__agent-skills/skills/critical-thinking ~/.claude/skills/critical-thinking # Claude Code
cp -R /tmp/tronghieu__agent-skills/skills/critical-thinking ~/.agents/skills/critical-thinking # Codex, Cursor, Gemini CLI, Copilot, OpenCode