Example MCP Server

Example MCP Server

A demonstration MCP server built with FastMCP v2.0 that provides basic mathematical calculations and greeting functionality. Features Docker containerization, comprehensive testing, and CI/CD automation for learning MCP development patterns.

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MCP Server with FastMCP v2.0

A Model Control Protocol (MCP) server implementation using FastMCP v2.0, featuring Docker containerization, comprehensive testing, and CI/CD automation.

Features

  • 🚀 Built with FastMCP v2.0
  • 🐳 Docker containerization with multi-stage builds
  • 📦 Modern Python packaging with uv
  • 🧪 Comprehensive test suite with pytest
  • 🔄 GitHub Actions CI/CD pipeline
  • 🛡️ Security scanning and dependency management
  • 📊 Code coverage reporting
  • 🔧 Automated code formatting and linting

Quick Start

Prerequisites

  • Python 3.10+
  • uv for dependency management
  • Docker (optional, for containerization)

Installation

  1. Clone the repository:
git clone <repository-url>
cd nikolas-mcp
  1. Install dependencies using uv:
uv sync
  1. Run the server:
uv run python -m mcp_server.main

Using Docker

  1. Build the Docker image:
docker build -t mcp-server .
  1. Run the container:
docker run -p 8000:8000 mcp-server
  1. Or use docker-compose:
docker-compose up

Available Tools

The MCP server provides the following tools:

calculate

Evaluates mathematical expressions safely.

Parameters:

  • expression (string): Mathematical expression to evaluate

Example:

{
  "tool": "calculate",
  "arguments": {
    "expression": "2 + 3 * 4"
  }
}

greet

Generates friendly greeting messages.

Parameters:

  • name (string): Name of the person to greet

Example:

{
  "tool": "greet",
  "arguments": {
    "name": "World"
  }
}

Resources

  • config://settings - Server configuration settings
  • info://server - General server information

Prompts

  • help - Display help information about available capabilities

Development

Setup Development Environment

# Install development dependencies
uv sync --dev

# Install pre-commit hooks
uv run pre-commit install

Running Tests

# Run all tests
uv run pytest

# Run tests with coverage
uv run pytest --cov=src --cov-report=html

# Run specific test file
uv run pytest tests/test_main.py -v

Code Quality

# Format code
uv run ruff format .

# Lint code
uv run ruff check .

# Type checking
uv run mypy src/

Project Structure

nikolas-mcp/
├── src/
│   └── mcp_server/
│       ├── __init__.py
│       ├── main.py          # Main server implementation
│       └── server.py        # Server utilities and config
├── tests/
│   ├── __init__.py
│   ├── conftest.py          # Pytest configuration
│   ├── test_main.py         # Main functionality tests
│   ├── test_server.py       # Server utilities tests
│   └── test_integration.py  # Integration tests
├── .github/
│   └── workflows/
│       ├── ci.yml           # CI/CD pipeline
│       └── dependabot.yml   # Dependabot auto-merge
├── Dockerfile
├── docker-compose.yml
├── pyproject.toml           # Project configuration
└── README.md

CI/CD Pipeline

The project includes a comprehensive GitHub Actions pipeline:

  • Lint and Format: Runs ruff for code formatting and linting
  • Test Suite: Runs tests across multiple Python versions and OS platforms
  • Security Scan: Performs security vulnerability scanning
  • Docker Build: Builds and tests Docker images
  • Auto-publish: Publishes to PyPI and Docker Hub on release

Required Secrets

For full CI/CD functionality, configure these GitHub secrets:

  • PYPI_API_TOKEN - PyPI authentication token
  • DOCKERHUB_USERNAME - Docker Hub username
  • DOCKERHUB_TOKEN - Docker Hub access token

Configuration

Environment Variables

  • LOG_LEVEL - Logging level (default: INFO)
  • PYTHONPATH - Python path for module resolution

Server Configuration

The server can be configured via the ServerConfig class in src/mcp_server/server.py:

config = ServerConfig()
config.max_connections = 200
config.timeout = 60

Docker Configuration

Multi-stage Build

The Dockerfile uses multi-stage builds for optimized image size:

  1. Base stage: Sets up Python and system dependencies
  2. Dependencies stage: Installs Python packages with uv
  3. Runtime stage: Copies application code and runs the server

Health Checks

The container includes health checks to ensure the server is running correctly.

Contributing

  1. Fork the repository
  2. Create a feature branch (git checkout -b feature/amazing-feature)
  3. Make your changes
  4. Run tests and ensure they pass
  5. Commit your changes (git commit -m 'Add amazing feature')
  6. Push to the branch (git push origin feature/amazing-feature)
  7. Open a Pull Request

License

This project is licensed under the MIT License - see the LICENSE file for details.

Support

If you encounter any issues or have questions:

  1. Check the Issues page for existing problems
  2. Create a new issue with detailed information
  3. Refer to the FastMCP documentation for FastMCP-specific questions

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