1. Conduid
  2. Developer Tools
  3. Claude Skill Builder
MCP server · Developer Tools

Claude Skill Builder

by · github.com/jaystarz1/Claude-Skill-Builder

This is a meta Claude Skill builder that helps you build Claude Skills.

Unclaimed Apache-2.0 last commit a year ago devtools
InstallView source
51Fair

Scored 5 months ago · breakdown

About Claude Skill Builder

Claude Skill Builder is an MCP server published by jaystarz1 in the Developer Tools category: this is a meta Claude Skill builder that helps you build Claude Skills.

The repository has 6 stars and 1 forks, with the last commit a year ago. Six months or more without a commit doesn't mean the server is broken, but check the open issues before depending on it in production.

Install

From source
git clone https://github.com/jaystarz1/Claude-Skill-Builder

This server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.

Ask AI

✦

Ask AI about Claude Skill Builder

Powered by Claude · Grounded in docs

I know everything about Claude Skill Builder. Ask me about installation, configuration, usage, or troubleshooting.

Security checks

Static checks derived from the repository 6 days ago. Heuristics on the source, not an audit.

  • ✓README presentThe repository ships documentation.
  • ✓License declaredUsable under a stated license.
  • ✓Tests presentA test suite exists in the repository.
  • !Dependencies pinnedNo lockfile. Installs can pull different code over time.
  • ✓No dynamic code executionSource scan found no eval, dynamic Function, or shell execution.
  • !Scoped permissionsDoesn't declare a permission scope. Assume it can do anything its process can.

README

Skills-Builder

Create world-class Claude Skills that work on your actual filesystem!

A comprehensive skill-builder that creates production-ready Claude Skills following all official Anthropic guidelines. Automatically detects your home directory and creates skills in ~/skills/ with dynamic path detection that works for any user.

✨ Features

  • 🎯 Dynamic Path Detection - Works for any user on any platform (Mac, Linux, Windows)
  • 📁 Persistent Files - Creates skills on your actual filesystem, not temporary containers
  • 📦 Automatic ZIP Creation - Skills are automatically packaged and ready to upload
  • 🔄 Git Integration - Optional pre-commit hooks auto-rebuild ZIPs on every commit
  • 🔗 Claude Code Integration - Automatic symlinks make skills work in Claude Desktop AND Claude Code
  • 🚀 API Deployment Scripts - Ready-to-run scripts for deploying to Anthropic API (organization-wide)
  • ✅ Full Validation - Checks all requirements before creating skills
  • 📚 Progressive Disclosure - Supports reference files, examples, and code helpers
  • 🔒 Security First - Never uses temporary or container directories

🚀 Quick Start

1. Set Up MCP Servers

Before using skills-builder, you need two MCP servers:

Required:

  • Filesystem MCP - Lets Claude create files on your computer

Recommended:

  • Zip Creator MCP - Automatically packages skills (has Python fallback if not installed)

📖 Complete Setup Guide: SETUP.md

Quick links:

2. Upload to Claude Desktop

  1. Download skills-builder.zip from this repository
  2. Open Claude Desktop
  3. Go to Settings → Capabilities
  4. Click "Upload skill"
  5. Select skills-builder.zip
  6. Start a new chat!

3. Create Your First Skill

User: "Create a skill that helps me write meeting notes"

Claude: 
✅ Detected skills directory: /Users/yourname/skills/
✅ Creating skill at: /Users/yourname/skills/meeting-notes/
✅ Created meeting-notes.zip (ready to upload)

Your skill is ready! Upload meeting-notes.zip to Claude Desktop.

📖 What This Does

The skills-builder creates Claude Skills that:

  • ✅ Work on claude.ai, API, and Claude Code
  • ✅ Follow all Anthropic specifications and best practices
  • ✅ Include comprehensive documentation and examples
  • ✅ Auto-generate ZIP files ready for upload
  • ✅ Validate naming conventions and structure
  • ✅ Support progressive disclosure for complex workflows
  • ✅ Include update instructions (UPDATING.md)

🗂️ Directory Structure

After setup, your files will look like:

~/skills/                          # Your skills directory
├── meeting-notes/                 # Example skill
│   ├── SKILL.md                   # Main skill definition
│   ├── meeting-notes.zip          # Auto-generated ZIP
│   ├── UPDATING.md                # Update instructions
│   ├── examples/                  # Optional: example outputs
│   └── references/                # Optional: reference docs
│
└── another-skill/
    └── ...

🎓 How to Use

Creating a New Skill

"Create a skill that [describes what you want]"

The skills-builder will:

  1. Ask clarifying questions about the skill's purpose
  2. Request examples (highly recommended!)
  3. Create the skill structure
  4. Generate all necessary files
  5. Create a ZIP file automatically
  6. Tell you where to upload it

Updating an Existing Skill

"Update the [skill-name] skill to [describe changes]"

The skills-builder will:

  1. Locate the existing skill
  2. Make the requested changes
  3. Recreate the ZIP file
  4. Remind you to upload the new version

Example Requests

Simple skill:

"Create a skill that formats JSON nicely"

Complex skill with examples:

"Create a skill for writing legal briefs. I'll provide example briefs to use as templates."

Skill update:

"Update the meeting-notes skill to add a section for action items"

🔧 Requirements

For Skills-Builder to Work:

  1. Filesystem MCP installed and configured

    • Gives Claude access to create files on your computer
    • Required for persistent file creation
    • See setup guide

  2. Claude Desktop (Pro, Team, or Enterprise)

    • Required to upload and use custom skills

Optional but Recommended:

  1. Zip Creator MCP installed
    • Faster, more reliable ZIP creation
    • Falls back to Python if not installed
    • See setup guide

📋 Features in Detail

Dynamic Path Detection

Works for any user on any platform:

  • Checks for $SKILLS_DIR environment variable
  • Falls back to ~/skills/ directory
  • Auto-creates the directory if it doesn't exist
  • No hardcoded paths - works for everyone!

Automatic ZIP Creation

Every skill is automatically packaged:

  • Uses zip-creator MCP if available
  • Falls back to Python script if not
  • Excludes .git/, __pycache__/, etc.
  • One ZIP file per skill (overwrites previous)

Git Integration (Optional)

If your skill is in a git repo:

  • Auto-sets up pre-commit hook
  • Rebuilds ZIP on every commit
  • ZIP stays in sync with code
  • No manual ZIP recreation needed

Claude Code Integration (Optional)

If you have Claude Code installed:

  • Auto-creates symlink from ~/.claude/skills/ to ~/skills/
  • Skills work in BOTH Claude Desktop AND Claude Code
  • Updates automatically sync to Claude Code
  • One source of truth - no file duplication

API Deployment Scripts (Always Included)

Every skill includes ready-to-run deployment scripts:

  • Bash script (deploy-to-api.sh) - For Unix/Mac/Linux users
  • Python script (deploy-to-api.py) - Cross-platform option
  • Pre-filled with correct skill name and ZIP filename
  • Error handling and validation built-in
  • Deploy to Anthropic API with one command
  • Makes skills organization-wide (all team members get access)

Comprehensive Validation

Before creating any skill:

  • ✅ Validates skills directory exists
  • ✅ Checks filesystem MCP is available
  • ✅ Verifies naming conventions
  • ✅ Confirms no reserved words used
  • ✅ Checks all requirements met

Update Tracking

Every skill includes:

  • UPDATING.md - Instructions for updating
  • Clear reminders about ZIP recreation
  • Links to tools and documentation

🎯 Skill Quality

Skills-builder creates professional-quality skills that:

  • Follow Anthropic's best practices
  • Use proper naming conventions (lowercase-with-hyphens)
  • Include WHAT the skill does AND WHEN to use it
  • Have clear, actionable procedures
  • Include examples when provided
  • Work across all Claude platforms

📚 Documentation

🔒 Security

The skills-builder:

  • ✅ Never uses temporary or container directories
  • ✅ Only creates files in ~/skills/ (or $SKILLS_DIR)
  • ✅ Validates all paths before operations
  • ✅ Uses filesystem MCP with proper permissions
  • ✅ Clear error messages for security issues

🐛 Troubleshooting

"Skills directory not found"

Problem: Can't find or create ~/skills/

Solution:

  1. Make sure filesystem MCP has access to your home directory
  2. Check config paths are absolute
  3. Restart Claude Desktop

"ZIP creation failed"

Problem: Zip-creator MCP not working

Solution:

  • Skills-builder automatically falls back to Python
  • Install zip-creator MCP for best experience (see guide)

"Access denied" errors

Problem: Filesystem MCP doesn't have permission

Solution:

  1. Add your home directory to filesystem MCP config
  2. Verify paths are absolute
  3. Restart Claude Desktop after config changes

See SETUP.md for complete troubleshooting guide.

🤝 Contributing

Contributions welcome! To contribute:

  1. Fork this repository
  2. Make your changes
  3. Test with the skills-builder skill
  4. Submit a pull request

Areas for contribution:

  • Additional example skills
  • Improved documentation
  • Better error messages
  • Platform-specific fixes

📄 License

MIT License - See LICENSE file for details

🙏 Acknowledgments

📞 Support

🎉 Get Started

Ready to build skills?

  1. Read SETUP.md - Set up MCP servers
  2. Upload skills-builder.zip to Claude Desktop
  3. Create your first skill!
"Create a skill that helps me organize my project notes"

Happy skill building! 🚀

README fetched from the repository 6 days ago. The original is authoritative.

Questions

About Claude Skill Builder

How do I install Claude Skill Builder?

No package has been published for this server, so install it from source: clone the repository and follow its README.

Is Claude Skill Builder safe to use with an AI agent?

Its trust score is 51 out of 100 (fair). It passes 4 of the 6 static security checks run so far; the failures are listed above. It has no ConduID identity yet, so agent calls to it are not receipted.

Is Claude Skill Builder still maintained?

The last commit was a year ago. That's long enough that you should check whether the maintainer is responding to issues before depending on it.