mcp-reminders

A Model Context Protocol (MCP) server that enables Claude and other LLMs to manage Apple Reminders.

About

This MCP server gives Claude full CRUD capabilities for Apple Reminders - create, read, update, delete, and complete tasks. Perfect for using Claude as your personal task manager, allowing you to manage reminders through natural conversation.

Features

• Create, read, update, and delete reminders

• List all reminder lists

• Mark reminders as complete

• Set due dates, priorities, and notes

• Query reminders by date range and completion status

• Full integration with Apple's native Reminders app

Prerequisites

• macOS 10.14+ - Uses EventKit framework to interact with Reminders

• Python 3.12+

• Apple Reminders app

• Claude Desktop or another MCP-compatible client

• Basic familiarity with MCP servers

Installation

Configuration

Add to your MCP settings file. For Claude Desktop, edit:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

• Alternative: ~/.mcp.json

Important: Replace /absolute/path/to/mcp-reminders with the actual path where you cloned this repository.

Permissions

The first time you use this server, macOS will request permission to access your Reminders. Grant permission in:

System Settings → Privacy & Security → Reminders

Make sure your MCP client (e.g., Claude Desktop) is authorized to access Reminders.

Available Tools

• list_reminder_lists() - List all reminder lists

• list_reminders(start_date?, end_date?, list_name?, include_completed?) - Query reminders with optional filters

• create_reminder(CreateReminderRequest) - Create a new reminder with title, notes, due date, priority, and list

• update_reminder(reminder_id, UpdateReminderRequest) - Update an existing reminder

• complete_reminder(reminder_id) - Mark a reminder as completed

• delete_reminder(reminder_id) - Delete a reminder

Usage Examples

Here's how Claude can use these tools in practice:

Creating a reminder:

Listing today's tasks:

Completing a task:

Managing priorities:

Limitations

• Early reminders/alarms: Setting notification times before the due date (like "remind me 1 hour before") is not yet supported. The EventKit API for early reminders doesn't fully align with how the macOS Reminders UI handles them.

• Creating reminder lists: You cannot create new reminder lists (calendars) programmatically yet. You'll need to create lists manually in the Reminders app first.

Troubleshooting

"Permission denied" error

• Make sure you've granted Reminders access in System Settings → Privacy & Security → Reminders

• Restart Claude Desktop after granting permissions

• Check that your MCP client is in the authorized apps list

Server not connecting

• Verify the absolute path in your MCP config file is correct

• Try running uv sync again to ensure dependencies are installed

• Check Claude Desktop logs: ~/Library/Logs/Claude/

Reminders not appearing

• Make sure the reminder list name exists in your Reminders app

• Try refreshing the Reminders app

• Check that you're querying the correct date range

"Invalid reminder ID" error

• Reminder IDs are x-apple-reminder:// URLs that can change

• Use list_reminders to get current IDs before updating/completing/deleting

Contributing

Contributions are welcome! Feel free to:

• Report issues on GitHub

• Submit pull requests for bug fixes or improvements

• Suggest new features (especially for early reminders and list creation)

License

MIT

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