Imagine a project has failed and work backward to identify why. Use at project kickoffs, before major decisions, or when optimism may be obscuring risks.
Install
npx skills add tjboudreaux/cc-thinking-skills --skill thinking-pre-mortemnpx skills add tjboudreaux/cc-thinking-skills --skill thinking-pre-mortem -a claude-code -gnpx skills add tjboudreaux/cc-thinking-skills --skill thinking-pre-mortem -a codex -ggemini skills install https://github.com/tjboudreaux/cc-thinking-skills.git --path skills/thinking-pre-mortemgh skill install tjboudreaux/cc-thinking-skills thinking-pre-mortemgit 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-pre-mortem ~/.claude/skills/thinking-pre-mortem # Claude Code
cp -R /tmp/tjboudreaux__cc-thinking-skills/skills/thinking-pre-mortem ~/.agents/skills/thinking-pre-mortem # Codex, Cursor, Gemini CLI, Copilot, OpenCode