Use this skill whenever the user asks to diagnose why something failed, find the root cause of an incident, conduct a post-mortem, analyze a problem or defect, distinguish symptoms from causes, or apply 5 Whys or Fishbone analysis.
Install
npx skills add microsoft/cat-agent-skills --skill root-cause-analysisnpx skills add microsoft/cat-agent-skills --skill root-cause-analysis -a claude-code -gnpx skills add microsoft/cat-agent-skills --skill root-cause-analysis -a codex -ggemini skills install https://github.com/microsoft/cat-agent-skills.git --path submissions/root-cause-analysisgh skill install microsoft/cat-agent-skills root-cause-analysisgit clone --depth 1 https://github.com/microsoft/cat-agent-skills /tmp/microsoft__cat-agent-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/microsoft__cat-agent-skills/submissions/root-cause-analysis ~/.claude/skills/root-cause-analysis # Claude Code
cp -R /tmp/microsoft__cat-agent-skills/submissions/root-cause-analysis ~/.agents/skills/root-cause-analysis # Codex, Cursor, Gemini CLI, Copilot, OpenCode