Calculate MCP Server

A simple Model Context Protocol (MCP) server that provides basic arithmetic calculation tools.

Features

This MCP server provides three tools for basic arithmetic operations:

• add: Add two numbers together
• subtract: Subtract the second number from the first number
• multiply: Multiply two numbers together

Installation

1. Clone or download this project

2. Install dependencies:

   npm install

3. Build the project:

   npm run build

Usage

Running the Server

npm start

For development with auto-reload:

npm run dev

Available Tools

add

Add two numbers together.

• Parameters:
  • a (number): First number
  • b (number): Second number
• Returns: The sum of a and b

subtract

Subtract the second number from the first number.

• Parameters:
  • a (number): First number (minuend)
  • b (number): Second number (subtrahend)
• Returns: The difference (a - b)

multiply

Multiply two numbers together.

• Parameters:
  • a (number): First number
  • b (number): Second number
• Returns: The product of a and b

Claude Desktop Configuration

To use this MCP server with Claude Desktop, add the following to your claude_desktop_config.json:

{
  "mcpServers": {
    "calculate": {
      "command": "node",
      "args": ["/path/to/calculate-mcp-server/dist/index.js"]
    }
  }
}

Replace /path/to/calculate-mcp-server with the actual path to your server installation.

Examples

Once configured with Claude Desktop, you can use the calculator like this:

• "Add 15 and 27"
• "Subtract 10 from 50"
• "Multiply 6 by 8"

Development

The project structure follows MCP best practices:

calculate-mcp-server/
├── package.json          # Dependencies and scripts
├── tsconfig.json         # TypeScript configuration
├── README.md             # This file
└── src/                  # Source code
    ├── index.ts          # Main server entry point
    └── tools/            # Individual tool implementations
        ├── add.ts
        ├── subtract.ts
        └── multiply.ts

License

MIT