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-7": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-calculator-7"
      ],
      "env": {}
    }
  }
}

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

Architecture & Capabilities

System Overview

Enables language models to perform calculations and interact with external systems through a defined protocol.

Indexed Date

7/22/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for Calculator

Calculator offers bidirectional communication, automatic reconnection, real-time data streaming, an easy-to-use tool creation interface, and secure WebSocket communication for robust and reliable operation.

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