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Improve existing code without changing its behavior. This skill guides analysis, test checks, identification of design problems, and a phased refactoring plan, then applies small changes with testing and review.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Breaking long functions into smaller parts
• Consolidating duplicated logic
• Planning cleanup of legacy code

Create, improve, or audit CLAUDE.md files that explain a project's purpose, structure, and development workflow to AI agents. Organize essential instructions, remove redundant content, and link to detailed documents where needed.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Creating project instructions for AI agents
• Condensing an overly long CLAUDE.md
• Auditing existing instructions without editing files

Keep marketing copy, customer messages, and public content consistent with a defined brand voice. The skill provides rules for a friendly, professional tone, concise sentences, concrete examples, preferred terminology, and clear calls to action.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Keeping marketing copy consistent in tone
• Writing customer messages in the brand's voice
• Aligning terminology across public content

Create marketing copy, customer messages, and public content with a consistent brand voice. Apply clear vocabulary, concise sentences, concrete examples, and a friendly, professional tone so readers can understand the value being offered.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Aligning marketing copy with a consistent brand voice
• Keeping customer messages friendly and professional
• Simplifying technical explanations for general readers

Create, update, or audit CLAUDE.md files that introduce a project to an AI agent. Organize its structure, purpose, development commands, and important conventions into concise guidance, with references to detailed documents.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Creating project instructions for an AI agent
• Shortening an overgrown CLAUDE.md
• Auditing existing project guidance

Review code for security, performance, quality, and maintainability. Get findings organized by severity, with file locations, explanations of impact, and example fixes, plus code metrics and complexity comparisons for refactoring reviews.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Reviewing a pull request before merging
• Checking code for security risks
• Finding performance improvement opportunities

Create, improve, or audit CLAUDE.md files that explain a project's purpose, structure, and development workflow to AI agents. Organize essential instructions, remove redundant content, and link to detailed documents where needed.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Creating project instructions for AI agents
• Condensing an overly long CLAUDE.md
• Auditing existing instructions without editing files

Turn ideas and reference materials into a blog draft with source citations. Work through research, topic development, an approved outline, and revisions, while saving source summaries and numbered drafts to track how the article develops.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Turning an idea into a structured blog draft
• Writing an article from research and reference materials
• Revising an existing draft while keeping earlier versions

Create, improve, or audit CLAUDE.md files that introduce AI agents to a project. Review project structure and development commands, keep shared instructions concise, and move detailed guidance into referenced documents, with drafts reviewed before changes are applied.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Draft project instructions for AI agents
• Shorten an existing CLAUDE.md
• Audit instruction quality without editing files

Write marketing copy, customer messages, and public content in a consistent brand voice. Apply predefined guidance on tone, sentence length, preferred terms, and concrete examples to keep communication friendly, professional, clear, and concise.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Write marketing copy in a consistent tone
• Align customer messages with brand guidance
• Simplify technical explanations for readers

Improve existing code structure while preserving its behavior. Review dependencies and tests, identify maintainability problems such as duplication or long functions, and plan small changes with testing, reversible commits, and a final comparison of results.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Splitting long functions into smaller, clearer functions
• Removing duplicated logic and unused code
• Planning improvements to hard-to-maintain legacy code

Check your understanding of one Claude Code tutorial lesson with a 10-question quiz. Get feedback after each round, a final score, and specific topics to review, whether you take it before, during, or after studying.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Check prior knowledge before a lesson
• Check understanding while studying
• Review weak areas after a lesson

Review code for security, performance, quality, and ease of maintenance. Get an overall assessment and prioritized findings with file locations, severity, explanations of impact, and example fixes to guide improvements or Pull Request reviews.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Reviewing a Pull Request before merging
• Checking authentication and data exposure risks
• Finding inefficient queries and processing

Create marketing copy, customer messages, and public content with a consistent brand voice. Apply clear vocabulary, concise sentences, concrete examples, and a friendly, professional tone so readers can understand the value being offered.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Aligning marketing copy with a consistent brand voice
• Keeping customer messages friendly and professional
• Simplifying technical explanations for general readers

Turn ideas and reference materials into a blog draft through research, outline approval, and revision. The workflow includes source citations, adjustments for the intended audience and tone, and separate files for each draft version.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Turning research materials into a blog post
• Planning an article for a specific audience
• Drafting articles with source citations

Review code for security, performance, quality, and ease of maintenance. Receive an overall assessment and categorized findings, with file locations, severity, impact, and code examples for addressing critical issues.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Reviewing a pull request
• Checking authentication and sensitive data handling
• Finding inefficient algorithms or database queries

Review code for security, performance, quality, and ease of maintenance. Receive an overall assessment and categorized findings, with file locations, severity, impact, and code examples for addressing critical issues.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Reviewing a pull request
• Checking authentication and sensitive data handling
• Finding inefficient algorithms or database queries

Improve existing code structure while preserving its behavior, using Martin Fowler's refactoring approach. Assess tests, identify structural problems, agree on a phased plan, and make small, tested changes with reversible commits and before-and-after comparisons.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Splitting long functions into clearer responsibilities
• Removing duplicate or unused code
• Planning gradual improvements to legacy code

Improve existing code without changing its behavior. This skill guides analysis, test checks, identification of design problems, and a phased refactoring plan, then applies small changes with testing and review.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Breaking long functions into smaller parts
• Consolidating duplicated logic
• Planning cleanup of legacy code

Turn ideas and reference materials into a blog draft through research, discussion, and an approved outline. Produce cited articles tailored to the intended audience, then revise them while keeping each draft version.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Turning an idea into a blog draft
• Writing an article from research materials
• Agreeing on an outline before drafting

Generate API documentation from source code, including OpenAPI/Swagger specifications. Describe endpoints, the addresses used to access API operations, with parameters, responses, errors, authentication guidance, and examples in cURL, JavaScript, and Python.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Creating API documentation from source code
• Preparing OpenAPI/Swagger specifications
• Documenting parameters, responses, and errors

Assess your Claude Code experience with a quick checklist or a deeper review across 10 feature areas. Receive a skill profile, identified gaps, and a personalized learning path with priorities, estimated study time, and practice exercises.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Find a starting point for learning Claude Code
• Review experience across feature areas
• Prioritize topics to learn next

Create or update API documentation from source code. The skill produces OpenAPI/Swagger specifications, descriptions of API operations, parameter and response references, authentication guidance, and practical examples for developers integrating an API.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Creating API documentation from source code
• Generating OpenAPI/Swagger specifications
• Preparing API request and response examples

Turn ideas and reference materials into a blog draft through research, outline approval, and revision. The workflow includes source citations, adjustments for the intended audience and tone, and separate files for each draft version.

한국어 요약은 준비 중입니다. 영어 요약을 표시하고 있습니다.

• Turning research materials into a blog post
• Planning an article for a specific audience
• Drafting articles with source citations