Calculator MCP Server

A Model Context Protocol (MCP) server that provides calculator tools for mathematical operations.

Features

The calculator server provides the following tools:

• add: Add two or more numbers together

• subtract: Subtract numbers (subtracts all subsequent numbers from the first)

• multiply: Multiply two or more numbers together

• divide: Divide numbers (divides first number by all subsequent numbers)

• power: Raise a number to a power

• sqrt: Calculate the square root of a number

• evaluate: Evaluate a mathematical expression safely (supports basic math operations and functions)

Installation

1. Install the required dependencies:

Or install directly:

Usage

Run the server:

The server communicates via stdio and follows the MCP protocol.

Configuration

To use this server with an MCP client, add the following to your MCP client configuration:

Or if you're in the same directory:

Example Tools

Add

Result: 10

Subtract

Result: 75

Multiply

Result: 24

Divide

Result: 10.0

Power

Result: 256

Square Root

Result: 4.0

Evaluate Expression

Result: 8

The evaluate tool also supports mathematical functions like sin, cos, tan, sqrt, log, exp, pi, e, etc.

Safety

The evaluate tool uses Python's compile() and eval() functions with a restricted namespace for safety. Only basic mathematical operations and functions are allowed.

License

This project is provided as-is for use with the Model Context Protocol.