Fastmail Calendar

Verified Integration

Author: @automating•Category: ServerApplication

GitHub Repository

JSON-RPC 2.0

Protocol Standard

Sub-second

Execution Latency

Active

Operational Status

Client Configuration

— Connect Fastmail Calendar to Claude Desktop or Cursor in seconds

{
  "mcpServers": {
    "fastmail-calendar": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-fastmail-calendar"
      ],
      "env": {}
    }
  }
}

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows).

Architecture & Capabilities

System Overview

Enables AI assistants to seamlessly manage Fastmail Calendar events, allowing them to view, create, modify, and delete entries.

Indexed Date

7/22/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for Fastmail Calendar

Fastmail Calendar AI is an MCP (Model Context Protocol) server that enables AI assistants to directly interact with and manage your Fastmail Calendar events. This allows AI to view, create, modify, and delete entries on your behalf.

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