Calc MCP Server: Install & Setup

Install Calc in Claude Code

Claude Code

claude mcp add calc -- npx -y @coo-quack/calc-mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "calc": {
      "command": "npx",
      "args": [
        "-y",
        "@coo-quack/calc-mcp"
      ]
    }
  }
}

21 MCP tools for math, randomness, dates, encoding, hashing, and more — deterministic and accurate.

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

Run: claude mcp add calc -- npx -y @coo-quack/calc-mcp

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