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 43 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 (Enforced by Pre-commit Hook)

Skills for public distribution must NOT contain:

• Absolute paths to user directories (/home/username/, /Users/username/)
• Personal usernames, company names, product names
• Phone numbers, personal email addresses
• OneDrive paths or environment-specific absolute paths
• Use relative paths within skill bundle or standard placeholders (~/workspace/, <user_id>)

Three-layer defense system:

1. CLAUDE.md rules (this section) — Claude avoids generating sensitive content
2. Pre-commit hook (.githooks/pre-commit) — blocks commits with sensitive patterns
3. gitleaks (.gitleaks.toml) — deep scan with custom rules for this repo

The pre-commit hook is auto-activated via git config core.hooksPath .githooks. If it fires, fix the issue — do NOT use --no-verify to bypass.

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 43 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: v1.39.0
   • 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 v1.4.0
   • 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.

⚠️ Updating Existing Skills (MANDATORY)

Any commit that modifies a skill's files MUST bump that skill's version in marketplace.json.

This applies when you change ANY file under a skill directory:

• SKILL.md (instructions, description, workflow)
• references/ (documentation, principles, examples)
• scripts/ (executable code)
• assets/ (templates, resources)

Version bump rules:

• Content/doc updates (new sections, rewritten principles) → bump MINOR (1.0.1 → 1.1.0)
• Bug fixes, typo fixes → bump PATCH (1.0.1 → 1.0.2)
• Breaking changes (renamed commands, removed features) → bump MAJOR (1.0.1 → 2.0.0)

Pre-commit check: Before committing, run git diff --name-only and verify: for every skill-name/ directory that appears, marketplace.json also has a version bump for that skill's plugins[].version.

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. doc-to-markdown - DOCX/PDF/PPTX → Markdown conversion with CJK post-processing
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/audio downloads with PO token handling, cookies, and proxy-aware retries
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
28. macos-cleaner - Intelligent macOS disk space analysis and cleanup with safety-first philosophy, risk categorization, and interactive confirmation
29. skill-reviewer - Reviews and improves Claude Code skills against official best practices with self-review, external review, and auto-PR modes
30. github-contributor - Strategic guide for becoming an effective GitHub contributor with opportunity discovery, project selection, and reputation building
31. i18n-expert - Complete internationalization/localization setup and auditing for UI codebases with framework support, key architecture, and parity validation
32. claude-skills-troubleshooting - Diagnose and resolve Claude Code plugin and skill configuration issues with diagnostic scripts and architecture documentation
33. meeting-minutes-taker - Transform meeting transcripts into structured minutes with multi-pass generation, speaker quotes, and iterative human review
34. deep-research - Generate format-controlled research reports with evidence mapping, citations, and multi-pass synthesis
35. competitors-analysis - Evidence-based competitor tracking and analysis with source citations (file:line_number format)
36. tunnel-doctor - Diagnose and fix Tailscale + proxy/VPN conflicts (four layers: route, HTTP env, system proxy, SSH ProxyCommand) on macOS with WSL SSH support
37. windows-remote-desktop-connection-doctor - Diagnose AVD/W365 connection quality issues with transport protocol analysis and Windows App log parsing
38. product-analysis - Perform structured product audits across UX, API, architecture, and compare mode to produce prioritized optimization recommendations
39. financial-data-collector - Collect real financial data for US public companies via yfinance with validation, NaN detection, and NO FALLBACK principle
40. excel-automation - Create formatted Excel files, parse complex xlsm models, and control Excel windows on macOS via AppleScript
41. capture-screen - Programmatically capture macOS application windows using Swift window ID discovery and screencapture workflows
42. continue-claude-work - Recover local .claude session context via compact-boundary extraction, subagent workflow recovery, and session end reason detection, then continue interrupted work without claude --resume
43. scrapling-skill - Install, troubleshoot, and use Scrapling CLI for static/dynamic web extraction, WeChat article capture, and verified output validation

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

YouTube Downloader SOP (Internal)

See youtube-downloader/references/internal-sop.md for yt-dlp troubleshooting steps (PO tokens, proxy, cookies, etc.).

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

For the full step-by-step guide with templates and examples, see references/new-skill-guide.md.

Files to update (all required):

File	Locations to update
.claude-plugin/marketplace.json	metadata.version + metadata.description + new plugin entry
CHANGELOG.md	New version entry
README.md	7 locations: badges, description, install cmd, skill section, use case, docs link, requirements
README.zh-CN.md	7 locations: same as above, translated
CLAUDE.md	3 locations: overview count, marketplace config count, Available Skills list
skill-name/	The actual skill directory + packaged .zip

Quick workflow:

# 1. Validate & package
cd skill-creator && python3 scripts/security_scan.py ../skill-name --verbose
python3 scripts/package_skill.py ../skill-name

# 2. Update all files listed above (see references/new-skill-guide.md for details)

# 3. Validate, commit, push, release
cd .. && python3 -m json.tool .claude-plugin/marketplace.json > /dev/null
git add -A && git commit -m "Release vX.Y.0: Add skill-name"
git push
gh release create vX.Y.0 --title "Release vX.Y.0: Add skill-name" --notes "..."

Top mistakes: Forgetting to push to GitHub, forgetting README.zh-CN.md, inconsistent version numbers across files.

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.

Handling Third-Party Marketplace Promotion Requests

Decline all third-party marketplace promotion requests. For policy, response template, and precedents, see references/promotion-policy.md.

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

Plugin and Skill Architecture

For full architecture documentation (core concepts, installation flow, data flow, common misconceptions, best practices), see references/plugin-architecture.md.

Plugin and Skill Troubleshooting

For systematic debugging steps (common errors, debugging process, pitfalls, real-world examples), see references/plugin-troubleshooting.md.

Quick fix for most issues: Commit → push → claude plugin marketplace update daymade-skills → retry install.