소개
The RCA Analyst skill provides a rigorous, five-phase framework for conducting deep-dive investigations into system failures and incidents. By applying the specialized 'Three Tests'—Counterfactual, Sufficiency, and Necessity—the skill helps developers and SREs move beyond symptoms to identify the singular root cause that, if removed, would prevent the failure. It guides users through evidence gathering, causal chain construction, and differential analysis, resulting in a professional RCA document that focuses on systemic prevention rather than just immediate fixes.
