Hubd vs Caldav MCP

In-depth architectural comparison of the Hubd and Caldav 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 Hubd when:

• You need dedicated capabilities in the Workplace & Productivity domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: other (Free / Open Source).
• You have access to required keys: HUBD_AGENT, HUBD_DIR.
• Primary tools included: MCP server over stdio and HTTP, CLI for hub initialization, status, briefs, and audits, Plain Markdown and JSONL data storage.

Explore Hubd Details

Choose Caldav MCP when:

• You need dedicated capabilities in the Workplace & Productivity domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: API Key required (Free / Open Source).
• You have access to required keys: CALDAV_URL, CALDAV_USERNAME, CALDAV_PASSWORD.
• Primary tools included: .

Feature & Specification Comparison

Specification	Hubd bzdOS Workplace & Productivity	Caldav MCP madbonez Workplace & Productivity
Summary	Files-first project hub for teams of humans and AI agents: shared journal, cross-project tasks, agent queues, and a read-only kanban. MCP server + CLI, zero dependencies.	Universal MCP server for CalDAV protocol integration. Works with any CalDAV-compatible calendar server including Yandex Calendar, Google Calendar (via CalDAV), Nextcloud, ownCloud, Apple iCloud, and others. Supports creating events with recurrence, categories, priority, attendees, reminders, searching events, and retrieving events by UID.
Category & Scope

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": {
    "bzdos-hubd": {
      "command": "npx",
      "args": [
        "-y",
        "degit"
      ],
      "env": {
        "HUBD_AGENT": "YOUR_HUBD_AGENT_HERE",
        "HUBD_DIR": "YOUR_HUBD_DIR_HERE"
      }
    }
  }
}

{
  "mcpServers": {
    "madbonez-caldav-mcp": {
      "command": "uvx",
      "args": [
        "mcp-caldav"
      ],
      "env": {
        "CALDAV_URL": "YOUR_CALDAV_URL_HERE",
        "CALDAV_USERNAME": "YOUR_CALDAV_USERNAME_HERE",
        "CALDAV_PASSWORD": "YOUR_CALDAV_PASSWORD_HERE"
      }
    }
  }
}

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