Calendar.app vs CalendarMCP

In-depth architectural comparison of the Calendar.app and CalendarMCP MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

C

Choose Calendar.app when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: list_calendars, list_events, get_event.

Explore Calendar.app Details

Choose CalendarMCP when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: list_events, get_event, create_event.

Explore CalendarMCP Details

Feature & Specification Comparison

Specification	C Calendar.app Developer Tools	CalendarMCP Developer Tools
Summary	List, search, and manage calendar events via macOS Calendar.app across all configured accounts.	Hosted Google Calendar MCP server for AI agents. No self-hosting or Google Cloud setup.
Category & Scope	Developer Tools	Developer Tools
Quality signal

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "calendar-app": {
      "command": "npx",
      "args": [
        "-y",
        "@p-l-ta/calendar-mcp"
      ]
    }
  }
}

{
  "mcpServers": {
    "calendarmcp": {
      "command": "npx",
      "args": [
        "@modelcontextprotocol/server-fetch",
        "https://calendarmcp.ai/api/mcp"
      ]
    }
  }
}

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