Learn MCP Server

🚀 Learning MCP Server

This repository provides a simple implementation of an MCP (Model Context Protocol) server for educational purposes. The server supports basic arithmetic operations (addition, subtraction, multiplication, division). This README explains how to use it from the Claude desktop.

🚀 Quick Start

📦 Installation

Step 1

Build the source code from this repository:

$ go build ./

Step 2

Include the following content in the Claude desktop application configuration file:

{
  "mcpServers": {
    "calculator": {
      "command": "/path/to/github.com/demouth/learn-mcp-server/learn-mcp-server",
      "args": []
    }
  }
}

Visit https://modelcontextprotocol.io/quickstart/server for more information.

Step 3

Restart the Claude desktop application.

Step 4

Ask the following question in the Claude desktop:

What is the answer to the following formula?
1234 x 56789

The logs are output to the following directory:

~/Library/Logs/Claude/

The following logs will be output:

2025-04-08T15:08:36.443Z [calculator] [info] Client message: {"method":"tools/call","params":{"name":"calculate","arguments":{"operation":"multiply","x":1234,"y":56789}},"jsonrpc":"2.0","id":35}
2025-04-08T15:08:36.443Z [calculator] [info] Server message: {"jsonrpc":"2.0","id":35,"result":{"content":[{"type":"text","text":"70077626.00"}]}}

💻 Usage Examples

Basic Usage

In this example, the browser is in autopilot mode to search Confluence, and the AI answers based on the content.