Calendar Bridge vs Proactive MCP

In-depth architectural comparison of the Calendar Bridge and Proactive 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 Calendar Bridge 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).

Explore Calendar Bridge Details

Choose Proactive MCP 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).

Explore Proactive MCP Details

Feature & Specification Comparison

Specification	Calendar Bridge Workplace & Productivity	Proactive MCP Workplace & Productivity
Summary	Connects ChatGPT to your Apple Calendar via a local Mac agent + Vercel relay	Detects reply deadlines, calendar conflicts, and personal occasions for MCP agents.
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-bridge": {
      "command": "npx",
      "args": [
        "-y",
        "calendar-agent"
      ]
    }
  }
}

{
  "mcpServers": {
    "proactive-mcp": {
      "command": "uvx",
      "args": [
        "--from",
        "git+https://github.com/madrobotnet/proactive-mcp@7cd0f03243027df464084c3957f03d3c42169268",
        "proactive-mcp"
      ]
    }
  }
}

Related MCP Server Comparisons