Calcom MCP vs Vrchat MCP

In-depth architectural comparison of the Calcom MCP and Vrchat MCP 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 Calcom MCP when:

• You need dedicated capabilities in the Communication domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: API Key required (BYOK (Pay Provider Direct)).
• You have access to required keys: CALCOM_API_KEY.
• Primary tools included: Cal.com API v2 access, Event type and booking management, Booking creation with attendee details.

Explore Calcom MCP Details

Choose Vrchat MCP when:

• You need dedicated capabilities in the Communication domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: API Key required (Free / Open Source).
• You have access to required keys: VRCHAT_USERNAME, VRCHAT_AUTH_TOKEN.
• Primary tools included: Retrieve friends, notifications, and invite messages, Search avatars, worlds, and groups, Send friend requests and request invites.

Feature & Specification Comparison

Specification	Calcom MCP Danielpeter-99 Communication	Vrchat MCP sawa-zen Communication
Summary	MCP server for Calcom. Manage event types, create bookings, and access Cal.com scheduling data through LLMs.	This is an MCP server for interacting with the VRChat API. You can retrieve information about friends, worlds, avatars, and more in VRChat.
Category & Scope	Communication

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": {
    "danielpeter-99-calcom-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "danielpeter-99-calcom-mcp"
      ],
      "env": {
        "CALCOM_API_KEY": "YOUR_CALCOM_API_KEY_HERE"
      }
    }
  }
}

{
  "mcpServers": {
    "sawa-zen-vrchat-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "vrchat-auth-token-checker"
      ],
      "env": {
        "VRCHAT_USERNAME": "YOUR_VRCHAT_USERNAME_HERE",
        "VRCHAT_AUTH_TOKEN": "YOUR_VRCHAT_AUTH_TOKEN_HERE"
      }
    }
  }
}

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