MCP Server Calculator

MCP Server Calculator is an MCP server that adds tools to AI assistants such as Claude Desktop, Claude Code and Cursor. A Model Context Protocol server for calculating. It has 160 GitHub stars, is released under the MIT license and runs locally with uvx mcp-server-calculator.

github.com/githejie/mcp-server-calculator (opens in a new tab)

Data as of Oct 26, 2026 from the GitHub API; description from the project's repository. Report an error

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Install MCP Server Calculator

Generated from the server's published package. Replace your-value with your own values.

Claude Desktop

claude_desktop_config.json

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

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

Claude Code

claude mcp add --transport stdio mcp-server-calculator -- uvx mcp-server-calculator

Cursor

.cursor/mcp.json

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

Project file; use ~/.cursor/mcp.json to enable it in every project.

VS Code

.vscode/mcp.json

{
  "servers": {
    "mcp-server-calculator": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "mcp-server-calculator"
      ]
    }
  }
}

Config formats checked against the official docs on Oct 7, 2026: modelcontextprotocol.io (opens in a new tab), code.claude.com (opens in a new tab), cursor.com (opens in a new tab), code.visualstudio.com (opens in a new tab).

Tools (2)

Parsed from the Tools section of the README; check the repository for the current list.

calculate
Calculates/evaluates the given expression.
expression
Expression to be calculated

About MCP Server Calculator

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

Key facts

GitHub stars	160
License	MIT
Language	Python
Transport	stdio (local)
Packages	PyPI: `mcp-server-calculator`
Auth	None declared
Works with	Claude Desktop, Claude Code, Cursor and VS Code
Latest release	No GitHub releases
Last commit	Aug 8, 2026

Project health

MaintainedMaintained: last commit Aug 8, 2026.

Raw inputs behind the health label
Last commit	Aug 8, 2026
Latest release	No GitHub releases
Releases, last 12 months	0
Releases, all time	0
Open issues	4
Open pull requests	4
Good first issues	0
Contributing guide	No
Security policy	No
Created	Mar 19, 2025

Health as of Oct 26, 2026, from the GitHub API. A label describes activity, not quality or security. How we label project health · Report a data error

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