Build in buffers for unknown unknowns and don't optimize to the edge. Use for capacity planning, deadline estimation, architecture design, and risk management.
Install
npx skills add tjboudreaux/cc-thinking-skills --skill thinking-margin-of-safetynpx skills add tjboudreaux/cc-thinking-skills --skill thinking-margin-of-safety -a claude-code -gnpx skills add tjboudreaux/cc-thinking-skills --skill thinking-margin-of-safety -a codex -ggemini skills install https://github.com/tjboudreaux/cc-thinking-skills.git --path skills/thinking-margin-of-safetygh skill install tjboudreaux/cc-thinking-skills thinking-margin-of-safetygit 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-margin-of-safety ~/.claude/skills/thinking-margin-of-safety # Claude Code
cp -R /tmp/tjboudreaux__cc-thinking-skills/skills/thinking-margin-of-safety ~/.agents/skills/thinking-margin-of-safety # Codex, Cursor, Gemini CLI, Copilot, OpenCode