By newkayak12
Thinking quality skills: assumption extraction, bias auditing, fallacy detection, mental models, epistemic reasoning, tradeoff articulation, question upgrading, second-order thinking, and thinking style profiling.
Use when someone presents a plan, argument, or belief with confidence and its hidden dependencies have not been examined — surfacing factual, causal, value, and definitional assumptions, then ranking which ones would collapse everything if wrong. Triggers on: "what am I assuming", "hidden assumptions", "what could go wrong", "take for granted", "숨겨진 전제", "내가 놓친 것", "가정 점검", "전제 확인". Best for: stress-testing plans before commitment, auditing confident arguments, pre-mortem preparation. Not for: logical fallacy analysis (use fallacy-detector), bias diagnosis (use bias-auditor).
Use when someone is evaluating a person, explaining behavior, or making a decision with expressed high confidence — auditing three layers: how information is judged (confirmation bias, anchoring, sunk cost), how behavior is explained (attribution errors), and how well someone knows what they know (overconfidence, Dunning-Kruger). Triggers on: "am I being biased", "why did they do that", "I'm sure about this", "편향 점검", "확증 편향", "왜 이렇게 생각하는 걸까", "내 판단이 맞나". Best for: high-stakes decisions, evaluating people, diagnosing why a conclusion feels certain. Not for: logical fallacy detection (use fallacy-detector), evidence calibration (use epistemic-reasoner).
Use when someone is overwhelmed by information, stuck in vague thinking, or spinning in analysis without moving forward. Three modes: cut signal from noise, eliminate vague language, and break overthinking loops. Triggers on: "overwhelmed", "too much information", "뭐가 중요한지 모르겠어", "너무 모호해", "과잉사고", "분석 마비", "뭘 해야 할지", "계속 생각만 해", "결정을 못하겠어", "더 명확하게". Best for: information overload, fuzzy goals that can't be acted on, decisions stuck in endless analysis. Not for: choosing between well-defined options (use tradeoff-articulator or decision-maker).
Use when someone states something with more certainty than the evidence supports, or when an analogy is doing the main argumentative work. Two instruments: calibrate what confidence level the evidence actually warrants, and stress-test whether the comparison holds where it matters. Triggers on: "how sure should I be", "is this analogy valid", "am I overstating this", "근거가 충분한가", "이 비유가 맞나", "확신의 정도", "이 비교가 적절한가". Best for: claims stated with absolute language, analogical arguments, forecasting confidence. Not for: diagnosing why someone is overconfident (use bias-auditor).
Use when someone presents a chain of reasoning or a story explaining why something happened, and the logic may have a structural flaw or the narrative may be too tidy. Covers logical fallacies (false dichotomy, post hoc, straw man) and narrative fallacy — the tendency to construct a coherent story over random events. Triggers on: "is this argument valid", "check my logic", "논리 오류", "이 주장이 맞나", "왜 이렇게 됐는지 설명해줘", "이 논리에 문제가 있나". Best for: evaluating arguments before acting on them, auditing explanatory narratives, debate preparation. Not for: cognitive bias diagnosis (use bias-auditor), confidence calibration (use epistemic-reasoner).
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A Claude Code plugin marketplace with 25 skills for software engineering.
Step 1: Register the marketplace
/plugin marketplace add newkayak12/claude-skills
Step 2: Install individual plugins
/plugin install agents@newkayak12-claude-skills
/plugin install completion@newkayak12-claude-skills
/plugin install develop@newkayak12-claude-skills
/plugin install planning@newkayak12-claude-skills
/plugin install pm@newkayak12-claude-skills
/plugin install portfolio@newkayak12-claude-skills
/plugin install skill@newkayak12-claude-skills
/plugin install think@newkayak12-claude-skills
/plugin install write@newkayak12-claude-skills
| Plugin | Description |
|---|---|
| agents | Agent orchestration: parallel agents, subagent-driven development |
| completion | Verification before completion |
| develop | Engineering: CLI, SQL, architecture, Spring Boot, Kotlin, TDD, and more |
| planning | Executing plans and roadmap planning |
| pm | Product management: user stories, story mapping, PRD |
| portfolio | Portfolio and career: feedback, JD analysis, interview prep |
| skill | Skill creation, improvement, and validation |
| think | Brainstorming, decision making, retrospective, and more |
| write | Documentation, writing plans, and content review |
npx claudepluginhub newkayak12/claude-skills --plugin cognitionPortfolio and career skills: JD analysis, portfolio rewriting, company research, feedback, pattern extraction, interview prep, resume tailoring, and job-application-workflow.
Product management skills: user stories, story mapping, story splitting, PRD development, contagious (STEPPS), product discovery, OKR planning, hypothesis-driven development, competitive analysis, go-to-market planning, pricing & monetization, stakeholder management, metrics interpretation, feature prioritization, customer research synthesis, roadmap communication, post-launch retrospective, technical feasibility assessment, and pm-strategy-workflow.
Writing skills: doc co-authoring, writing plans, skill writing, writer verification, SBI feedback writing, and technical blog writing.
Verification before completion: evidence-based workflow to confirm work is done before claiming success.
Engineering leadership skills: 1-on-1 meetings for managers and ICs, engineer leveling and promotion cases, calibration conversations.
39 eval-informed thinking skills and mental models for Claude Code
Create new skills, improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, update or optimize an existing skill, run evals to test a skill, or benchmark skill performance with variance analysis.
Curate auto-memory, promote learnings to CLAUDE.md and rules, extract proven patterns into reusable skills.
Create, test, measure, and iteratively improve Claude Code skills with category-aware design, gotchas-driven development, progressive disclosure coaching, and automated description optimization.
Skill and agent authoring tools: generate, audit, and improve Claude Code skills, commands, and agents
Comprehensive skill pack with 66 specialized skills for full-stack developers: 12 language experts (Python, TypeScript, Go, Rust, C++, Swift, Kotlin, C#, PHP, Java, SQL, JavaScript), 10 backend frameworks, 6 frontend/mobile, plus infrastructure, DevOps, security, and testing. Features progressive disclosure architecture for 50% faster loading.