Calendly MCP Server vs MCP Server Cal

In-depth architectural comparison of the Calendly MCP Server and MCP Server Cal 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?

Choose Calendly MCP Server 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_upcoming_events, get_event_details, search_events.

Explore Calendly MCP Server Details

Choose MCP Server Cal 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: cal_list_bookings, cal_get_booking, cal_create_booking.

Explore MCP Server Cal Details

Feature & Specification Comparison

Specification	Calendly MCP Server Developer Tools	MCP Server Cal Developer Tools
Summary	Connect Claude to Calendly — schedule meetings, check availability, manage events	Cal.com scheduling MCP server: manage bookings, event types, and availability.
Category & Scope	Developer Tools	Developer Tools

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": {
    "calendly-mcp-server": {
      "command": "uvx",
      "args": [
        "calendly-mcp"
      ]
    }
  }
}

{
  "mcpServers": {
    "mcp-server-cal": {
      "command": "npx",
      "args": [
        "-y",
        "@aiwerk/mcp-server-cal"
      ]
    }
  }
}

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