Calculator MCP Server

Name: Calculator MCP Server
Author: githejie

@githejie

Repository

About Calculator MCP Server

A Model Context Protocol server for calculating.

Basic information

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "mcp-server-calculator": {
      "command": "python",
      "args": [
        "-m",
        "mcp_server_calculator"
      ]
    }
  }
}

Tools

Calculates/evaluates the given expression.

Overview

What is Calculator MCP Server?

A Model Context Protocol server that enables LLMs to perform precise numerical calculations by evaluating mathematical expressions. It provides a single tool for calculating expressions.

How to use Calculator MCP Server?

Install it via uvx (recommended) or pip install mcp-server-calculator. Then add the following configuration to your MCP client settings: for uvx use "command": "uvx", "args": ["mcp-server-calculator"]; for pip use "command": "python", "args": ["-m", "mcp_server_calculator"].

Key features of Calculator MCP Server

Provides a single calculate tool for expression evaluation.
Accepts a required expression string parameter.
Designed for integration with any MCP‑compatible client.
No persistent storage or external dependencies beyond Python.
Licensed under the MIT License for free use and modification.

Use cases of Calculator MCP Server

An LLM performing arithmetic or algebraic calculations during a conversation.
Validating complex numerical expressions before presenting results.
Offloading exact computation to a dedicated tool to reduce errors.
Embedding precise mathematical capabilities into AI assistants.

FAQ from Calculator MCP Server

What tool does the Calculator MCP Server provide?

It exposes a single tool called calculate that takes an expression (string, required) and evaluates it.

How do I install the Calculator MCP Server?

You can install it using uvx (no separate install needed) or via pip install mcp-server-calculator. After pip installation, run python -m mcp_server_calculator.

How do I configure the Calculator MCP Server with my MCP client?

Add a JSON block to your client’s settings: for uvx use "command": "uvx", "args": ["mcp-server-calculator"]; for pip use "command": "python", "args": ["-m", "mcp_server_calculator"].