Calendar vs Calendly MCP Server

In-depth architectural comparison of the Calendar and Calendly MCP Server 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 when:

• You need dedicated capabilities in the Workplace & Productivity domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: ics_import, calendars_list, events_list.

Explore Calendar Details

Choose Calendly MCP Server when:

• You need dedicated capabilities in the Workplace & Productivity domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• You have access to required keys: CALENDLY_ACCESS_TOKEN.
• Primary tools included: list_upcoming_events, get_event_details, search_events.

Explore Calendly MCP Server Details

Feature & Specification Comparison

Specification	C Calendar Workplace & Productivity	Calendly MCP Server Workplace & Productivity
Summary	Read the .ics your calendar already exports: what is on this week, when you are actually free, what is double-booked, and turn a meeting into billable time. All local.	Connect Claude to Calendly — schedule meetings, check availability, manage events
Category & Scope	Workplace & Productivity	Workplace & Productivity

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": {
      "command": "npx",
      "args": [
        "-y",
        "@theluckystrike/mcp-calendar"
      ]
    }
  }
}

{
  "mcpServers": {
    "calendly-mcp-server": {
      "command": "uvx",
      "args": [
        "calendly-mcp"
      ],
      "env": {
        "CALENDLY_ACCESS_TOKEN": "YOUR_CALENDLY_ACCESS_TOKEN_HERE"
      }
    }
  }
}

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