claude-code-skills-reference/CLAUDE.md

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Repository Overview

This is a Claude Code skills marketplace containing 27 production-ready skills organized in a plugin marketplace structure. Each skill is a self-contained package that extends Claude's capabilities with specialized knowledge, workflows, and bundled resources.

Essential Skill: skill-creator is the most important skill in this marketplace - it's a meta-skill that enables users to create their own skills. Always recommend it first for users interested in extending Claude Code.

Skills Architecture

Directory Structure

Each skill follows a standard structure:

skill-name/
├── SKILL.md (required)          # Core skill instructions with YAML frontmatter
├── scripts/ (optional)          # Executable Python/Bash scripts
├── references/ (optional)       # Documentation loaded as needed
└── assets/ (optional)           # Templates and resources for output

Progressive Disclosure Pattern

Skills use a three-level loading system:

1. Metadata (name + description in YAML frontmatter) - Always in context
2. SKILL.md body - Loaded when skill triggers
3. Bundled resources - Loaded as needed by Claude

Development Commands

Installation Scripts

In Claude Code (in-app):

/plugin marketplace add daymade/claude-code-skills

Then:

1. Select Browse and install plugins
2. Select daymade/claude-code-skills
3. Select skill-creator
4. Select Install now

From your terminal (CLI):

# Automated installation (macOS/Linux)
curl -fsSL https://raw.githubusercontent.com/daymade/claude-code-skills/main/scripts/install.sh | bash

# Automated installation (Windows PowerShell)
iwr -useb https://raw.githubusercontent.com/daymade/claude-code-skills/main/scripts/install.ps1 | iex

# Manual installation
claude plugin marketplace add https://github.com/daymade/claude-code-skills
# Marketplace name: daymade-skills (from marketplace.json)
claude plugin install skill-creator@daymade-skills

Skill Validation and Packaging

# Quick validation of a skill
skill-creator/scripts/quick_validate.py /path/to/skill

# Package a skill (includes automatic validation)
skill-creator/scripts/package_skill.py /path/to/skill [output-dir]

# Initialize a new skill from template
skill-creator/scripts/init_skill.py <skill-name> --path <output-directory>

Testing Skills Locally

# Add local marketplace
claude plugin marketplace add https://github.com/daymade/claude-code-skills
# Marketplace name: daymade-skills (from marketplace.json)

# Install specific skill (start with skill-creator)
claude plugin install skill-creator@daymade-skills

# Test by copying to user skills directory
cp -r skill-name ~/.claude/skills/
# Then restart Claude Code

In Claude Code, use /plugin ... slash commands. In your terminal, use claude plugin ....

Git Operations

This repository uses standard git workflow:

git status
git add .
git commit -m "message"
git push

Skill Writing Requirements

Writing Style

Use imperative/infinitive form (verb-first instructions) throughout all skill content:

• ✅ "Extract files from a repomix file using the bundled script"
• ❌ "You should extract files from a repomix file"

YAML Frontmatter Requirements

Every SKILL.md must include:

---
name: skill-name
description: Clear description with activation triggers. This skill should be used when...
---

Privacy and Path Guidelines

Skills for public distribution must NOT contain:

• Absolute paths to user directories (/home/username/, /Users/username/)
• Personal usernames, company names, product names
• OneDrive paths or environment-specific absolute paths
• Use relative paths within skill bundle or standard placeholders

Content Organization

• Keep SKILL.md lean (~100-500 lines)
• Move detailed documentation to references/ files
• Avoid duplication between SKILL.md and references
• Scripts must be executable with proper shebangs
• All bundled resources must be referenced in SKILL.md

Marketplace Configuration

The marketplace is configured in .claude-plugin/marketplace.json:

• Contains 27 plugins, each mapping to one skill
• Each plugin has: name, description, version, category, keywords, skills array
• Marketplace metadata: name, owner, version, homepage

Versioning Architecture

Two separate version tracking systems:

1. Marketplace Version (.claude-plugin/marketplace.json → metadata.version)

   • Tracks the marketplace catalog as a whole
   • Current: v1.20.0
   • Bump when: Adding/removing skills, major marketplace restructuring
   • Semantic versioning: MAJOR.MINOR.PATCH

2. Individual Skill Versions (.claude-plugin/marketplace.json → plugins[].version)

   • Each skill has its own independent version
   • Example: ppt-creator v1.0.0, skill-creator v1.0.0
   • Bump when: Updating that specific skill
   • CRITICAL: Skills should NOT have version sections in SKILL.md

Key Principle: SKILL.md files should be timeless content focused on functionality. Versions are tracked in marketplace.json only.

Available Skills

Priority Order (by importance):

1. skill-creator ⭐ - Essential meta-skill for creating your own skills (with init/validate/package scripts)
2. github-ops - GitHub operations via gh CLI and API
3. markdown-tools - Document conversion with WSL path handling
4. mermaid-tools - Diagram extraction and PNG generation
5. statusline-generator - Claude Code statusline customization
6. teams-channel-post-writer - Teams communication templates
7. repomix-unmixer - Extract files from repomix packages
8. llm-icon-finder - AI/LLM brand icon access
9. cli-demo-generator - CLI demo and terminal recording with VHS
10. cloudflare-troubleshooting - API-driven Cloudflare diagnostics and debugging
11. ui-designer - Design system extraction from UI mockups
12. ppt-creator - Professional presentation creation with dual-path PPTX generation
13. youtube-downloader - YouTube video and audio downloading with yt-dlp error handling
14. repomix-safe-mixer - Secure repomix packaging with automatic credential detection
15. transcript-fixer - ASR/STT transcription error correction with dictionary and AI learning
16. video-comparer - Video comparison and quality analysis with interactive HTML reports
17. qa-expert - Comprehensive QA testing infrastructure with autonomous LLM execution and Google Testing Standards
18. prompt-optimizer - Transform vague prompts into precise EARS specifications with domain theory grounding
19. claude-code-history-files-finder - Find and recover content from Claude Code session history files
20. docs-cleaner - Consolidate redundant documentation while preserving valuable content
21. pdf-creator - Create PDF documents from markdown with Chinese font support using weasyprint
22. claude-md-progressive-disclosurer - Optimize CLAUDE.md files using progressive disclosure principles
23. skills-search - Search, discover, install, and manage Claude Code skills from the CCPM registry
24. promptfoo-evaluation - Run LLM evaluations with Promptfoo for prompt testing and model comparison
25. iOS-APP-developer - iOS app development with XcodeGen, SwiftUI, and SPM troubleshooting
26. fact-checker - Verify factual claims in documents using web search with automated corrections
27. twitter-reader - Fetch Twitter/X post content using Jina.ai API without JavaScript or authentication

Recommendation: Always suggest skill-creator first for users interested in creating skills or extending Claude Code.

Python Development

All Python scripts in this repository:

• Use Python 3.6+ syntax
• Include shebang: #!/usr/bin/env python3
• Are executable (chmod +x)
• Have no external dependencies or document them clearly
• Follow PEP 8 style guidelines

Quality Standards

Before submitting or modifying skills:

• Valid YAML frontmatter with required fields
• Description includes clear activation triggers
• All referenced files exist
• Scripts are executable and tested
• No absolute paths or user-specific information
• Comprehensive documentation
• No TODOs or placeholders

Skill Creation Workflow

When creating a new skill:

1. Understand concrete usage examples
2. Plan reusable contents (scripts/references/assets)
3. Initialize using init_skill.py
4. Edit SKILL.md and bundled resources
5. Package using package_skill.py (auto-validates)
6. Iterate based on testing feedback

Adding a New Skill to Marketplace

CRITICAL: When adding a skill to this marketplace, you MUST update all of these files in the correct order. Missing any file will result in incomplete integration.

Step-by-Step Process

1. Refine the Skill (if needed)

# Ensure skill follows best practices
# - SKILL.md uses imperative/infinitive form
# - Third-person description in YAML frontmatter
# - Progressive disclosure (details in references/)
# - Security scan passed

cd skill-creator
python3 scripts/security_scan.py ../skill-name --verbose

2. Package the Skill

cd skill-creator
python3 scripts/package_skill.py ../skill-name

# This will:
# - Validate skill structure
# - Check security scan status
# - Create skill-name.zip in skill-creator/
# - Move zip to skill-name/ directory

3. Update CHANGELOG.md ⚠️ REQUIRED

Add new version entry at the top (after [Unreleased]):

## [X.Y.0] - YYYY-MM-DD

### Added
- **New Skill**: skill-name - Brief description
  - Feature 1
  - Feature 2
  - Feature 3
  - Bundled scripts/references/assets
  - Key capabilities

### Changed
- Updated marketplace skills count from N to N+1
- Updated marketplace version from X.(Y-1).0 to X.Y.0
- Updated README.md badges (skills count, version)
- Updated README.md to include skill-name in skills listing
- Updated README.zh-CN.md badges (skills count, version)
- Updated README.zh-CN.md to include skill-name in skills listing
- Updated CLAUDE.md skills count from N to N+1
- Added skill-name use case section to README.md
- Added skill-name use case section to README.zh-CN.md
- Added dependencies to requirements section (if any, both EN and ZH)

Version numbering: Increment MINOR version (e.g., 1.8.0 → 1.9.0) when adding a skill.

4. Update README.md ⚠️ REQUIRED

a. Update badges (top of file):

[![Skills](https://img.shields.io/badge/skills-N-blue.svg)]
[![Version](https://img.shields.io/badge/version-X.Y.0-green.svg)]

b. Update description:

Professional Claude Code skills marketplace featuring N production-ready skills...

c. Add installation command:

# Brief description
claude plugin install skill-name@daymade-skills

d. Add skill section (### N. skill-name):

### N. **skill-name** - One-line Title

Brief description paragraph.

**When to use:**
- Use case 1
- Use case 2
- Use case 3

**Key features:**
- Feature 1
- Feature 2
- Feature 3

**Example usage:**
\`\`\`bash
# Example commands
\`\`\`

**🎬 Live Demo**

*Coming soon* (or add demo GIF)

📚 **Documentation**: See [skill-name/references/](./skill-name/references/)...

**Requirements**: Dependencies (e.g., Python 3.8+, FFmpeg, etc.)

e. Add use case section:

### For [Use Case Category]
Use **skill-name** to [describe primary use case]. Combine with **other-skill** to [describe integration].

f. Add documentation quick link:

- **skill-name**: See `skill-name/references/...` for ...

g. Update requirements section (if needed):

- **Tool Name** (for skill-name): `install command`

5. Update CLAUDE.md ⚠️ REQUIRED

a. Update repository overview:

This is a Claude Code skills marketplace containing N production-ready skills...

b. Update marketplace configuration:

The marketplace is configured in `.claude-plugin/marketplace.json`:
- Contains N plugins, each mapping to one skill

c. Update marketplace version:

1. **Marketplace Version** (`.claude-plugin/marketplace.json` → `metadata.version`)
   - Tracks the marketplace catalog as a whole
   - Current: vX.Y.0

d. Add skill to Available Skills list:

N. **skill-name** - Brief description with key feature

6. Update .claude-plugin/marketplace.json ⚠️ CRITICAL

MOST IMPORTANT FILE - This file makes the skill installable!

a. Update metadata.description:

"description": "Professional Claude Code skills for ..., and [new skill capability]"

b. Update metadata.version:

"version": "X.Y.0"

c. Add new plugin entry to plugins array:

{
  "name": "skill-name",
  "description": "Clear description with trigger conditions. Use when [scenarios]",
  "source": "./",
  "strict": false,
  "version": "1.0.0",
  "category": "appropriate-category",
  "keywords": ["keyword1", "keyword2", "keyword3", ...],
  "skills": ["./skill-name"]
}

Categories: developer-tools, document-conversion, documentation, customization, communication, utilities, assets, design, productivity, security, media

d. Validate JSON syntax:

python3 -m json.tool .claude-plugin/marketplace.json > /dev/null

7. Update README.zh-CN.md ⚠️ REQUIRED

CRITICAL: Chinese documentation must be kept in sync with English version.

a. Update badges (top of file):

[![Skills](https://img.shields.io/badge/skills-N-blue.svg)]
[![Version](https://img.shields.io/badge/version-X.Y.0-green.svg)]

b. Update description:

专业的 Claude Code 技能市场，提供 N 个生产就绪的技能，用于增强开发工作流。

c. Add installation command:

# 简短描述
claude plugin install skill-name@daymade-skills

d. Add skill section (### N. skill-name - Chinese Title):

• Translate all content from English README
• Include: 使用场景 (When to use), 主要功能 (Key features), 示例用法 (Example usage)
• Maintain same structure as English version
• Include documentation links and requirements

e. Add use case section:

### [Use Case Category in Chinese]
使用 **skill-name** [describe use case in Chinese]. 与 **other-skill** 结合使用以 [describe integration].

f. Add documentation quick link:

- **skill-name**：参见 `skill-name/references/...` 了解 ...

g. Update requirements section (if needed):

- **Tool Name**（用于 skill-name）：`install command`

Translation tips:

• Use professional technical Chinese
• Maintain consistency with existing translations
• Keep code examples in English (don't translate variable names, function names)
• Translate user-facing descriptions, features, and use cases

8. Verification Checklist

Before committing, verify:

• CHANGELOG.md has new version entry
• README.md badges updated (skills count + version)
• README.md has skill section with number
• README.md has use case section
• README.md has documentation link
• README.md requirements updated (if needed)
• README.zh-CN.md badges updated (skills count + version) ⚠️ NEW
• README.zh-CN.md has skill section with number ⚠️ NEW
• README.zh-CN.md has use case section ⚠️ NEW
• README.zh-CN.md has documentation link ⚠️ NEW
• README.zh-CN.md requirements updated (if needed) ⚠️ NEW
• README.zh-CN.md installation command added ⚠️ NEW
• CLAUDE.md skill count updated in 3 places
• CLAUDE.md has skill in Available Skills list
• marketplace.json metadata.version updated
• marketplace.json metadata.description updated
• marketplace.json has new plugin entry
• marketplace.json validates (python3 -m json.tool)
• skill-name.zip package exists
• Security scan passed

Common Mistakes to Avoid

1. Forgetting marketplace.json ⚠️ - The most critical file! Without this, the skill cannot be installed via claude plugin install
2. Forgetting Chinese documentation ⚠️ - README.zh-CN.md must be updated in sync with README.md (6 locations)
3. Inconsistent version numbers - CHANGELOG, README badges (both EN and ZH), CLAUDE.md, and marketplace.json must all match
4. Inconsistent skill counts - README description (both EN and ZH), badges, CLAUDE.md must all have same count
5. Missing skill number in README - Skills must be numbered sequentially (1, 2, 3, ...) in both EN and ZH versions
6. Invalid JSON syntax - Always validate marketplace.json after editing
7. Forgetting dependencies - Update README requirements section (both EN and ZH) if skill needs external tools
8. Incomplete Chinese translation - Must translate all sections: description, use cases, features, use case section, docs link

File Update Summary Template

When adding a skill, this is the complete file list:

Files to Update:
✅ CHANGELOG.md                        (Add version entry)
✅ README.md                          (7 locations: badges, description, install, skill section, use case, docs link, requirements)
✅ README.zh-CN.md                    (7 locations: badges, description, install, skill section, use case, docs link, requirements) ⚠️ CRITICAL
✅ CLAUDE.md                          (3 locations: overview, marketplace config, available skills)
✅ .claude-plugin/marketplace.json    (CRITICAL: metadata + new plugin entry)
✅ skill-name/                        (The actual skill directory)
✅ skill-name/skill-name.zip          (Packaged skill)

IMPORTANT: README.zh-CN.md is MANDATORY. Do not skip Chinese documentation updates!

Version Numbering Convention

• MAJOR.MINOR.PATCH (Semantic Versioning)
• Increment MINOR when adding a new skill: 1.8.0 → 1.9.0
• Increment PATCH for bug fixes or small updates: 1.9.0 → 1.9.1
• Increment MAJOR for breaking changes or major restructuring: 1.9.0 → 2.0.0

Quick Reference Commands

# 1. Refine and validate skill
cd skill-creator
python3 scripts/security_scan.py ../skill-name --verbose

# 2. Package skill
python3 scripts/package_skill.py ../skill-name

# 3. Validate marketplace.json
cd ..
python3 -m json.tool .claude-plugin/marketplace.json > /dev/null && echo "✅ Valid"

# 4. Check what needs committing
git status

# 5. View specific file changes
git diff CHANGELOG.md
git diff README.md
git diff README.zh-CN.md
git diff CLAUDE.md
git diff .claude-plugin/marketplace.json

# 6. Verify Chinese documentation is in sync
grep "skills-[0-9]*" README.md README.zh-CN.md
grep "version-[0-9.]*" README.md README.zh-CN.md

Chinese User Support

For Chinese users having API access issues, recommend CC-Switch:

• Manages Claude Code API provider configurations
• Supports DeepSeek, Qwen, GLM, and other Chinese AI providers
• Tests endpoint response times to find fastest provider
• Cross-platform (Windows, macOS, Linux)

See README.md section "🇨🇳 中文用户指南" for details.

Release Workflow

When adding a new skill or creating a marketplace release:

1. Create the Skill

# Develop skill in its directory
skill-name/
├── SKILL.md (no version history!)
├── scripts/
└── references/

# Validate
./skill-creator/scripts/quick_validate.py skill-name

# Package
./skill-creator/scripts/package_skill.py skill-name

2. Update Marketplace Configuration

Edit .claude-plugin/marketplace.json:

{
  "metadata": {
    "version": "1.x.0"  // Bump minor version for new skill
  },
  "plugins": [
    {
      "name": "new-skill",
      "version": "1.0.0",  // Skill's initial version
      "description": "...",
      "category": "...",
      "keywords": [...],
      "skills": ["./new-skill"]
    }
  ]
}

3. Update Documentation

README.md:

• Update badges (skills count, marketplace version)
• Add skill description and features
• Create demo GIF using cli-demo-generator
• Add use case section
• Add documentation references
• Add requirements (if applicable)

CLAUDE.md:

• Update skill count in Repository Overview
• Add skill to Available Skills list
• Update Marketplace Configuration count

4. Generate Demo (Optional but Recommended)

# Use cli-demo-generator to create demo GIF
./cli-demo-generator/scripts/auto_generate_demo.py \
  -c "command1" \
  -c "command2" \
  -o demos/skill-name/demo-name.gif \
  --title "Skill Demo" \
  --theme "Dracula"

5. Commit and Release

# Commit marketplace update
git add .claude-plugin/marketplace.json skill-name/
git commit -m "Release vX.Y.0: Add skill-name

- Add skill-name vX.Y.Z
- Update marketplace to vX.Y.0
..."

# Commit documentation
git add README.md CLAUDE.md demos/
git commit -m "docs: Update README for vX.Y.0 with skill-name"

# Push
git push

# Create GitHub release
gh release create vX.Y.0 \
  --title "Release vX.Y.0: Add skill-name - Description" \
  --notes "$(cat <<'EOF'
## New Skill: skill-name

Features:
- Feature 1
- Feature 2

Installation:
```bash
claude plugin install skill-name@daymade-skills

Changelog: ... EOF )"

### Version Bumping Guide

**Marketplace version (metadata.version):**
- **MAJOR** (2.0.0): Breaking changes, incompatible marketplace structure
- **MINOR** (1.5.0): New skill added, significant feature addition
- **PATCH** (1.4.1): Bug fixes, documentation updates, skill updates

**Skill version (plugins[].version):**
- **MAJOR** (2.0.0): Breaking API changes for the skill
- **MINOR** (1.2.0): New features in the skill
- **PATCH** (1.1.1): Bug fixes in the skill

### Example: v1.5.0 Release (ppt-creator)

```bash
# 1. Created ppt-creator skill
# 2. Updated marketplace.json: 1.4.0 → 1.5.0
# 3. Added ppt-creator plugin entry (version: 1.0.0)
# 4. Updated README.md (badges, description, demo)
# 5. Generated demo GIF with cli-demo-generator
# 6. Committed changes
# 7. Created GitHub release with gh CLI

Best Practices Reference

Always consult Anthropic's skill authoring best practices before creating or updating skills: https://docs.claude.com/en/docs/agents-and-tools/agent-skills/best-practices.md

• remember this release workflow in claude.md