Calculator

by githejie

125 stars

7.4k downloads

Not rated

GitHub

About

Provides a secure mathematical expression evaluation service using Python's AST module for basic operations without relying on eval(), enabling quick calculations within conversations.

Details

Author: githejie
Repository: githejie/mcp-server-calculator
GitHub stars: 125
Downloads: 7,379
License: MIT License
Categories: Productivity, Community, Other, Design, Developer Tools, Infrastructure, Frontend

- 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.

Setting up with Highlight

This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:

Download and install Highlight from highlightai.com/download
Navigate to the plugins tab and select "Add Custom Plugin"
Configure the plugin with the settings below
Plugin Name Calculator

Command (node, npx, python, etc.) uvx
Arguments
- Argument 1 mcp-server-calculator
Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
Enable "Start Automatically" if you want the plugin to start when Highlight launches

Setting up with Cursor

Open Cursor's settings
Navigate to the MCP section
Click "Add new Global MCP server"
Copy and paste the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "calculator": {
            "env": {},
            "args": [
                "mcp-server-calculator"
            ],
            "shell": false,
            "command": "uvx"
        }
    }
}

JSON

{
    "mcpServers": {
        "calculator": {
            "env": {},
            "args": [
                "-m",
                "mcp_server_calculator"
            ],
            "shell": false,
            "command": "python"
        }
    }
}

JSON

{
    "mcpServers": {
        "calculator": {
            "env": {},
            "args": [
                "mcp-server-calculator"
            ],
            "shell": false,
            "command": "uvx"
        }
    }
}

Setting up with Claude Desktop

Open Claude Desktop's settings
Go to the Integrations tab
Click "Add MCP Server"
Use the configuration below based on your operating system

Note: Make sure Claude Desktop is running before attempting to connect.

JSON

{
    "mcpServers": {
        "calculator": {
            "env": {},
            "args": [
                "mcp-server-calculator"
            ],
            "shell": false,
            "command": "uvx"
        }
    }
}

JSON

{
    "mcpServers": {
        "calculator": {
            "env": {},
            "args": [
                "-m",
                "mcp_server_calculator"
            ],
            "shell": false,
            "command": "python"
        }
    }
}

JSON

{
    "mcpServers": {
        "calculator": {
            "env": {},
            "args": [
                "mcp-server-calculator"
            ],
            "shell": false,
            "command": "uvx"
        }
    }
}

Setting up with Windsurf

Open Windsurf's preferences
Go to the Integrations section
Click "Add MCP Integration"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "calculator": {
            "env": {},
            "args": [
                "mcp-server-calculator"
            ],
            "shell": false,
            "command": "uvx"
        }
    }
}

JSON

{
    "mcpServers": {
        "calculator": {
            "env": {},
            "args": [
                "-m",
                "mcp_server_calculator"
            ],
            "shell": false,
            "command": "python"
        }
    }
}

JSON

{
    "mcpServers": {
        "calculator": {
            "env": {},
            "args": [
                "mcp-server-calculator"
            ],
            "shell": false,
            "command": "uvx"
        }
    }
}

Setting up with Cline

Open Cline's settings
Navigate to the Integrations section
Click "Add MCP Server"
Copy and paste the configuration below based on your operating system

Note: Make sure to restart Cline after adding the configuration.

JSON

{
    "mcpServers": {
        "calculator": {
            "env": {},
            "args": [
                "mcp-server-calculator"
            ],
            "shell": false,
            "command": "uvx"
        }
    }
}

JSON

{
    "mcpServers": {
        "calculator": {
            "env": {},
            "args": [
                "-m",
                "mcp_server_calculator"
            ],
            "shell": false,
            "command": "python"
        }
    }
}

JSON

{
    "mcpServers": {
        "calculator": {
            "env": {},
            "args": [
                "mcp-server-calculator"
            ],
            "shell": false,
            "command": "uvx"
        }
    }
}

Setting up with Goose

Open Goose's preferences
Go to the Integrations tab
Select "MCP Servers"
Click "Add New Server"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "calculator": {
            "env": {},
            "args": [
                "mcp-server-calculator"
            ],
            "shell": false,
            "command": "uvx"
        }
    }
}

JSON

{
    "mcpServers": {
        "calculator": {
            "env": {},
            "args": [
                "-m",
                "mcp_server_calculator"
            ],
            "shell": false,
            "command": "python"
        }
    }
}

JSON

{
    "mcpServers": {
        "calculator": {
            "env": {},
            "args": [
                "mcp-server-calculator"
            ],
            "shell": false,
            "command": "uvx"
        }
    }
}

From the repository

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"].

`calculate`

Calculates/evaluates the given expression. Parameters: expression (string, required) - Expression to be calculated.

- calculate - Calculates/evaluates the given expression.
- expression (string, required): Expression to be calculated

Claude Desktop / Cursor

Paste into your MCP client config file to install this server.

{
    "mcpServers": {
        "calculator": {
            "env": {},
            "args": [
                "mcp-server-calculator"
            ],
            "shell": false,
            "command": "uvx"
        }
    }
}

Linux

{
    "env": [],
    "args": [
        "mcp-server-calculator"
    ],
    "shell": false,
    "command": "uvx"
}

Macos

{
    "env": [],
    "args": [
        "mcp-server-calculator"
    ],
    "shell": false,
    "command": "uvx"
}

Windows

{
    "env": [],
    "args": [
        "-m",
        "mcp_server_calculator"
    ],
    "shell": false,
    "command": "python"
}

A Model Context Protocol server for calculating. This server enables LLMs to use calculator for precise numerical calculations.

- calculate- Calculates/evaluates the given expression.

- expression(string, required): Expression to be calculated

When usinguvno specific installation is needed. We will use uvxto directly runmcp-server-calculator.

curl -LsSf https://astral.sh/uv/install.sh | sh

Alternatively you can installmcp-server-calculatorvia pip:

After installation, you can run it as a script using:

"mcpServers": { "calculator": { "command": "uvx", "args": ["mcp-server-calculator"] } }

Alternatively add this to your MCP client settings:

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

mcp-server-calculator is licensed under the MIT License. This means you are free to use, modify, and distribute the software, subject to the terms and conditions of the MIT License. For more details, please see the LICENSE file in the project repository.

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About

Details

Jump to

Setting up with Highlight

From the repository

calculate

Claude Desktop / Cursor

Linux

Macos

Windows

Install

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