fmea

Systematically enumerate failure modes for a system or process, score each by severity, likelihood, and detectability, and produce a prioritized risk register (Risk Priority Number = S × O × D). Use eagerly whenever the user asks "what could go wrong", wants a pre-launch risk review of a critical feature, is turning an incident postmortem into a broader risk analysis, needs a documented risk assessment for compliance, or describes a new system/integration where failure modes haven't been catalogued yet. Trigger on "failure modes", "risk register", "what are the risks here", "RPN", "risk priority", or "what should we worry about before we ship this". Prefer this over scenario-analysis when the output needs to be quantified and prioritized rather than narrative; if the user wants stakeholder-facing stories instead of a scored register, the scenario-analysis skill fits better.