Use when a specific claim may lack grounding. Check evidence boundary, size wrongness cost, then answer, fetch, or abstain — never confabulate.
Install
npx skills add tjboudreaux/cc-thinking-skills --skill thinking-circle-of-competencenpx skills add tjboudreaux/cc-thinking-skills --skill thinking-circle-of-competence -a claude-code -gnpx skills add tjboudreaux/cc-thinking-skills --skill thinking-circle-of-competence -a codex -ggemini skills install https://github.com/tjboudreaux/cc-thinking-skills.git --path skills/thinking-circle-of-competencegh skill install tjboudreaux/cc-thinking-skills thinking-circle-of-competencegit clone --depth 1 https://github.com/tjboudreaux/cc-thinking-skills /tmp/tjboudreaux__cc-thinking-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/tjboudreaux__cc-thinking-skills/skills/thinking-circle-of-competence ~/.claude/skills/thinking-circle-of-competence # Claude Code
cp -R /tmp/tjboudreaux__cc-thinking-skills/skills/thinking-circle-of-competence ~/.agents/skills/thinking-circle-of-competence # Codex, Cursor, Gemini CLI, Copilot, OpenCode