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Cal

An MCP server for Mathematical expression calculation

other-tools-and-integrations

Installation

npx -y cal-mcp

Configuration

{
  "mcpServers": {
    "cal-mcp": {
      "command": "npx",
      "args": ["-y", "cal-mcp"]
    }
  }
}

How to use

Run the installation command above (if needed)
Open your Claude Code settings file (~/.claude/settings.json)
Add the configuration to the mcpServers section
Restart Claude Code to apply changes

View source on GitHub

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