Astrocal Dev MCP vs MCP Server Cal

In-depth architectural comparison of the Astrocal Dev MCP 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 Astrocal Dev MCP 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: check_availability, create_booking, cancel_booking.

Explore Astrocal Dev MCP 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	Astrocal Dev MCP Developer Tools	MCP Server Cal Developer Tools
Summary	AI-native scheduling: check availability, book meetings, cancel and reschedule via MCP	Cal.com scheduling MCP server: manage bookings, event types, and availability.
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": {
    "mcp-server-50": {
      "command": "npx",
      "args": [
        "-y",
        "@astrocal/mcp-server"
      ]
    }
  }
}

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

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