Skill Claude CodeCodex
Five Whys root cause analysis. Iteratively asks "why" to drill past symptoms to underlying causes. Use for debugging, investigating failures, or understanding why something went wrong.
Skill Claude CodeCodex
After-Action Review—structured debrief asking what was expected, what happened, why the difference, and what next. Use after projects, launches, presentations, or any significant event.
Skill Claude CodeCodex
Cynefin sense-making framework categorizing problems as Simple, Complicated, Complex, Chaotic, or Confused to select the right approach. Use when unsure how to tackle a problem.
Skill Claude CodeCodex
Design Thinking process—Empathize, Define, Ideate, Prototype, Test. Use for product design, solving ambiguous problems, or when you don't know what users really need.
Skill Claude CodeCodex
Eisenhower Matrix prioritization categorizing tasks by urgency and importance into Do, Schedule, Delegate, Eliminate quadrants. Use for task prioritization, time management, or when overwhelmed.
Skill Claude CodeCodex
Strunk & White composition review using the 11 principles from "Elements of Style" Chapter II. Use when analyzing structure, improving flow, or tightening prose.
Skill Claude CodeCodex
Strunk & White style review using the 21 reminders from "Elements of Style" Chapter V. Use when editing prose, reviewing drafts, or improving writing clarity and tone.
Skill Claude CodeCodex
Strunk & White grammar review using the 11 elementary rules from "Elements of Style" Chapter I. Use when checking mechanics, punctuation, and grammatical correctness.
Skill Claude CodeCodex
Feynman Technique for deep learning—explain a concept simply, identify gaps, fill them, then refine. Use when learning something new, testing understanding, or preparing to teach.
Skill Claude CodeCodex
Jobs to Be Done analysis to understand what customers really want. Use for product discovery, competitive analysis, or understanding why customers hire/fire solutions.
Skill Claude CodeCodex
MoSCoW prioritization categorizing items as Must have, Should have, Could have, or Won't have. Use for scope definition, feature prioritization, or when everything feels equally important.
Skill Claude CodeCodex
OODA loop decision framework (Observe, Orient, Decide, Act). Use for complex decisions, problem-solving, unclear situations, or when someone is jumping to solutions without analysis.
Skill Claude CodeCodex
Blameless post-mortem incident analysis with timeline, root cause, and action items. Use after outages, security incidents, project failures, or any event you want to prevent recurring.
Skill Claude CodeCodex
Pre-mortem analysis that imagines a plan has failed, then works backward to identify causes and preventions. Use before launches, major decisions, or risky initiatives to surface hidden risks.
Skill Claude CodeCodex
Red team adversarial analysis to find weaknesses, vulnerabilities, and failure modes. Use before launches, for security review, or when a plan feels too perfect.
Skill Claude CodeCodex
Start-Stop-Continue retrospective identifying what to Start doing, Stop doing, and Continue doing. Use for sprint retros, personal reflection, team process reviews, or habit audits.
Skill Claude CodeCodex
RICE prioritization scoring initiatives by Reach, Impact, Confidence, and Effort. Use for feature prioritization, roadmap planning, or when comparing initiatives objectively.
Skill Claude CodeCodex
SCAMPER creative brainstorming with seven prompts—Substitute, Combine, Adapt, Modify, Put to other uses, Eliminate, Reverse. Use for innovation, product ideas, or breaking creative blocks.
Skill Claude CodeCodex
Six Thinking Hats parallel thinking—explore from six perspectives (facts, feelings, caution, benefits, creativity, process). Use for group decisions or ensuring all angles are considered.
Skill Claude CodeCodex
Socratic questioning to examine beliefs, uncover assumptions, and develop deeper understanding. Use to challenge thinking, evaluate proposals, or teach without lecturing.
Skill Claude CodeCodex
SWOT strategic analysis examining Strengths, Weaknesses, Opportunities, and Threats. Use for strategic planning, competitive analysis, career decisions, or evaluating opportunities.
Skill Claude CodeCodex
Wardley Mapping strategic analysis—map value chains against evolution to reveal build vs buy decisions and competitive dynamics. Use for technology strategy or investment decisions.
Skill Claude CodeCodex
WRAP decision framework countering the four villains—narrow framing, confirmation bias, short-term emotion, and overconfidence. Use for major decisions or when stuck between options.