eventkit-mcp-server

A local Model Context Protocol server that exposes macOS Reminders and Calendar events via Apple's EventKit framework.

Created with Claude Code by Anthropic.

---

Requirements

• macOS (EventKit is Apple-only)
• Reminders access granted to your terminal in System Settings → Privacy & Security → Reminders
• Calendar access granted to your terminal in System Settings → Privacy & Security → Calendar

Building

cargo build --release

The binary is written to target/release/eventkit-mcp-server.

Usage

The server uses stdio transport. On startup it connects to the system Reminders and Calendar databases and requests authorization — on first run macOS shows a permission dialog naming your terminal. Once authorized it serves MCP requests over stdin/stdout until the client disconnects.

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "eventkit": {
      "command": "/path/to/eventkit-mcp-server/target/release/eventkit-mcp-server"
    }
  }
}

Claude Code

Use the CLI to register the server. The default scope is local (current project only); use -s user to register it globally for all projects.

# Current project only:
claude mcp add eventkit /path/to/eventkit-mcp-server/target/release/eventkit-mcp-server

# All projects (global):
claude mcp add -s user eventkit /path/to/eventkit-mcp-server/target/release/eventkit-mcp-server

---

Tools

Reminders

Tool	Description
list_reminder_lists	List all Reminder lists visible to the current user
list_reminder_sources	List all account sources available for creating reminder lists
set_default_reminder_source	Set the default source used when creating new reminder lists
create_reminder_list	Create a new Reminder list
delete_reminder_list	Delete a Reminder list and all its reminders
list_reminders	List reminders filtered by completion status and/or list
get_reminder	Fetch a single reminder by its stable identifier
create_reminder	Create a new reminder
update_reminder	Update fields on an existing reminder
complete_reminder	Mark a reminder as completed
delete_reminder	Delete a reminder by its stable identifier

Calendar

Tool	Description
list_calendars	List all Calendars visible to the current user
list_events	List events in a date range, optionally filtered by calendar
get_event	Fetch a single event by its stable identifier
create_event	Create a new calendar event
update_event	Update fields on an existing event
delete_event	Delete an event by its stable identifier

---

Tool inputs

Reminders

list_reminder_sources — no parameters

set_default_reminder_source

{ "source_id": "source-identifier" }

create_reminder_list

{
  "title": "Shopping",
  "source_id": "optional-source-identifier"
}

source_id is optional. Omit to use the user-configured default source; if none is set, the system default (from macOS Settings) is used. Call list_reminder_sources to see available sources.

delete_reminder_list

{ "id": "list-identifier" }

Deletes the list and all reminders it contains.

list_reminders

{
  "list_id": "optional-list-identifier",
  "status": "incomplete"
}

status: "incomplete" (default) — pending reminders only; "completed" — done reminders only; "all" — both.
list_id: optional — omit to search across all lists.

get_reminder / complete_reminder / delete_reminder

{ "id": "reminder-i

... [View full README on GitHub](https://github.com/njacobs5074/eventkit-mcp-server#readme)