Skill MCP Server

Turn any AI agent into a specialist — just drop in a skill folder.

Features • Quick Start • How It Works • Creating Skills • Documentation

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Skill MCP Server is a Model Context Protocol (MCP) server that enables AI agents like Claude to dynamically load and use modular "skills".

Think of it as a plugin system for AI agents — drop a skill folder into the directory, and your agent instantly gains new capabilities. No coding required, no server restarts needed.

Why Skill MCP Server?

Traditional Approach	With Skill MCP Server
Write code to extend agent capabilities	Just copy a folder
Restart services to apply changes	Hot reload, instant availability
Each capability developed separately	Community-shared, plug-and-play
Complex integration work	Zero configuration

Features

• Instant Capability Extension — Drop skill folders, gain superpowers
• Zero Configuration — Skills are auto-discovered and loaded
• Hot Reload — Add new skills without restarting the server
• Multi-Language Scripts — Execute Python, Shell, JavaScript, TypeScript
• Secure by Design — Path validation, sandboxed file operations
• Resource Bundling — Include templates, references, and assets with skills

Quick Start

Installation

# Using pip
pip install skill-mcp-server

# Using uv (recommended)
uv pip install skill-mcp-server

30-Second Setup

# 1. Create a skills directory
mkdir skills

# 2. Download or create a skill (example: copy the skill-creator)
cp -r examples/skill-creator skills/

# 3. Start the server
skill-mcp-server --skills-dir ./skills

That's it! Your AI agent can now use the skill.

Configure with Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "skill-server": {
      "command": "skill-mcp-server",
      "args": ["--skills-dir", "/path/to/your/skills"]
    }
  }
}

Configure with Claude Code

Add to your ~/.claude.json:

{
  "mcpServers": {
    "skill-server": {
      "command": "skill-mcp-server",
      "args": [
        "--skills-dir", "/path/to/your/skills",
        "--workspace", "/path/to/workspace"
      ]
    }
  }
}

How It Works

┌─────────────────────────────────────────────────────────────────┐
│                        AI Agent (Claude)                         │
└─────────────────────────────────────────────────────────────────┘
                                │
                                │ MCP Protocol
                                ▼
┌─────────────────────────────────────────────────────────────────┐
│                      Skill MCP Server                            │
│  ┌───────────┐  ┌───────────┐  ┌───────────┐  ┌───────────┐    │
│  │   skill   │  │  skill_   │  │  skill_   │  │   file_   │    │
│  │  loader   │  │ resource  │  │  script   │  │   ops     │    │
│  └───────────┘  └───────────┘  └───────────┘  └───────────┘    │
└─────────────────────────────────────────────────────────────────┘
                                │
                                ▼
┌─────────────────────────────────────────────────────────────────┐
│                        Skills Directory                          │
│  ┌─────────────┐  ┌─────────────┐  ┌─────────────┐             │
│  │ data-analyst│  │ doc-writer  │  │ api-helper  │  ...        │
│  │  SKILL.md   │  │  SKILL.md   │  │  SKILL.md   │             │
│  │  scripts/   │  │  templates/ │  │  references/│             │
│  └─────────────┘  └─────────────┘  └─────────────┘             │
└─────────────────────────────────────────────────────────────────┘

Available MCP Tools

Tool	Description
skill	Load a skill to get detailed instructions
list_skills	List all available skills
skill_resource	Read resource files from a skill
skill_script	Execute scripts bundled with a skill
file_read	Read files from workspace
file_write	Write files to workspace
file_edit	Edit existing files in workspace

Creating Skills

A skill is simply a folder containing a SKILL.md file:

my-skill/
├── SKILL.md              # Required: Instructions for the AI
├── scripts/              # Optional: Executable scripts
│   └── process_data.py
├── references/           # Optional: Reference documentation
│   └── api_docs.md
└── assets/               # Optional: Templates, images, etc.
    └── report_template.md

SKILL.md Format

---
name: my-skill
description: Brief description of what this skill does and when to use it
---

# My Skill

## Overview

Explain what this skill enables the AI to do.

## Usage

Step-by-step instructions for the AI agent...

## Available Resources

- `scripts/process_data.py` - Process input data
- `assets/report_template.md` - Output template

Example: Data Analyst Skill

---
name: data-analyst
description: Analyze CSV data and generate insights reports
---

# Data Analyst

## When to Use

Use this skill when the user wants to:
- Analyze CSV or tabular data
- Generate statistical summaries
- Create data visualizations

## Workflow

1. Read the data file using `file_read`
2. Execute `scripts/analyze.py` for statistical analysis
3. Use `assets/report_template.md` to format the output
4. Write the report using `file_write`

Use Cases

• Data Analysis — Agent becomes a data scientist
• Document Generation — Agent creates professional documents
• API Integration — Agent works with specific APIs
• Code Review — Agent follows your team's standards
• DevOps Tasks — Agent automates deployment workflows

Documentation

• Getting Started Guide
• Creating Skills
• Skill Format Reference
• API Reference

Development

# Clone the repository
git clone https://github.com/your-org/skill-mcp-server.git
cd skill-mcp-server

# Install development dependencies
uv pip install -e ".[dev]"

# Run tests
pytest

# Run linting
ruff check src/

Contributing

Contributions are welcome! Please see CONTRIBUTING.md for guidelines.

License

MIT License - see LICENSE for details.

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_{Built with the Model Context Protocol}