Interactive root cause analysis facilitator — runs a structured 5-Why why chain session, challenges each answer with evidence requirements, detects symptomatic and circular reasoning, and produces a validated Why chain with reversal check. Use for 8D D4, CAPA investigations, FMEA cause analysis, or any quality investigation requiring confirmed root cause identification.
Install
npx skills add RBraga01/Quality-Engineering-Skills --skill rca-facilitatornpx skills add RBraga01/Quality-Engineering-Skills --skill rca-facilitator -a claude-code -gnpx skills add RBraga01/Quality-Engineering-Skills --skill rca-facilitator -a codex -ggemini skills install https://github.com/RBraga01/Quality-Engineering-Skills.git --path skills/agents/rca-facilitatorgh skill install RBraga01/Quality-Engineering-Skills rca-facilitatorgit clone --depth 1 https://github.com/RBraga01/Quality-Engineering-Skills /tmp/RBraga01__Quality-Engineering-Skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/RBraga01__Quality-Engineering-Skills/skills/agents/rca-facilitator ~/.claude/skills/rca-facilitator # Claude Code
cp -R /tmp/RBraga01__Quality-Engineering-Skills/skills/agents/rca-facilitator ~/.agents/skills/rca-facilitator # Codex, Cursor, Gemini CLI, Copilot, OpenCode