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learn-mcp-server

learn-mcp-server

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github.com/demouthDeveloper Tools1Updated 81w ago
Repository

About learn-mcp-server

learn-mcp-server is a small Go MCP server for learning how MCP servers work. It exposes basic arithmetic operations that can be called from Claude Desktop.

Key features

  1. 01Addition and subtraction
  2. 02Multiplication and division
  3. 03Go implementation

Use cases

  1. 01Learn basic MCP server setup
  2. 02Calculate arithmetic expressions in Claude Desktop

MCP support

Provides arithmetic tools to MCP clients; the README shows configuration for Claude Desktop.

Configuration

Local server config is the same for every client. Copy it into your client’s MCP config file.

No install method listed yet

We haven’t collected a package or remote endpoint for this server. Follow the instructions in the project README.

Repository

Tools

No tool list yet

Local servers expose tools only once running on your machine, and the maintainer has not provided a tool list.

Details

From the project README

learn-mcp-server

This repository provides a simple MCP (Model Context Protocol) server implementation for educational purposes. The server supports basic arithmetic operations (addition, subtraction, multiplication, division), and this README describes how to use it from Claude Desktop.

step 1

Build source code from this repository.

$ go build ./

step 2

In the Claude for Desktop App configuration file, include the following:

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

see https://modelcontextprotocol.io/quickstart/server

step 3

Restart Claude for Desktop.

step 4

Ask the following question in Claude for Desktop:

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

screenshot

Logs are output to the following directory:

~/Library/Logs/Claude/

The following log will be output:

2025-04-08T15:08:36.443Z [calculator] [info] Message from client: {"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] Message from server: {"jsonrpc":"2.0","id":35,"result":{"content":[{"type":"text","text":"70077626.00"}]}}

Examples

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

confluence_search

Comments

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New to MCP?

From what the protocol is to installing your first server, these answers cover most first questions.

An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.