Subnet Calculator MCP Server

🚀 Subnet Calculator MCP Server

This project offers a simple MCP (Model Context Protocol) server for calculating subnet details based on a given CIDR (Classless Inter-Domain Routing) representation. It uses the FastMCP library to expose the subnet calculation functionality as a tool.

✨ Features

1. Calculate subnet details based on the given CIDR.
2. Provide the following information:
   • Network address
   • Broadcast address
   • Subnet mask
   • Wildcard mask
   • Available host range
   • Number of available hosts
3. Run the MCP server in SSE (Server-Sent Events) transmission mode.

📋 Prerequisites

• Python 3.7+
• fastmcp library

📦 Installation

• Clone the repository or copy the script.
• Install the required dependencies:

pip install fastmcp mcp[cli]

💻 Usage Examples

Basic Usage

This MCP server runs in SSE transmission mode. Run the MCP server:

python main.py

📚 How to Add this Server to Your MCP Client

Goose MCP Client

• Click on the menu (the "..." icon) and select Advanced Settings:

• Navigate to the Extensions section

• Select "Add Custom Extension"

• Choose the server type as Server-Sent Events
• Select a random ID
• Choose the MCP server name
• Enter a description
• Enter the URI: https://mcp-subnet-calculator.mteke.com/sse
• Click the Add button

Now the extension is added and the MCP server is enabled:

Now the MCP server is activated:

You can watch a video demonstration on how to enable the MCP server in the Goose client application:

Claude Desktop MCP Client

• Select Claude Desktop settings
• Select Developer and edit the configuration
• Modify the content of claude_desktop_config.json as follows:

{
  "mcpServers": {
    "mcp-subnet-calculator-sse": {
      "command": "npx",
      "args": [
        "-y",
        "supergateway",
        "--sse",
        "https://mcp-subnet-calculator.mteke.com/sse"
      ]
    }
  }
}

• Completely close the Claude Desktop application and restart it

You can watch a video demonstration on how to enable the MCP server in the Claude Desktop client application:

How to add the Subnet Calculator MCP server to your Goose client:

How to add the Subnet Calculator MCP server to an N8N instance: