Calculator

Verified Integration

Author: @spawning•Category: ServerApplication

GitHub Repository

JSON-RPC 2.0

Protocol Standard

Sub-second

Execution Latency

Active

Operational Status

Client Configuration

— Connect Calculator to Claude Desktop or Cursor in seconds

{
  "mcpServers": {
    "calculator-11": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-calculator-11"
      ],
      "env": {}
    }
  }
}

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows).

Architecture & Capabilities

System Overview

Provides a suite of mathematical functions accessible via a Model Context Protocol (MCP) server.

Indexed Date

7/22/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for Calculator

No, it is primarily designed as a developer tool and an educational example. Its main purpose is to showcase the implementation of an MCP server and its client interaction for mathematical functions, not to serve as an end-user calculator application.

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