List all Calendar.app calendars across all accounts, with name, UUID, color, and account info. UUIDs can be passed to list_events, search_events, and get_event to filter by calendar.

List calendar events within a date range. Queries the Calendar.app SQLite database via OccurrenceCache, which correctly expands recurring event instances rather than just listing master events. Returns events sorted by start time.

Get full details of a single Calendar.app event by UUID, including attendees and all metadata. The uuid field is returned by list_events and search_events.

Search Calendar.app events by text across title, description, and location. Queries CalendarItem directly for fast full-text matching. For recurring events returns the master event; use list_events for occurrence-level detail.

Create a new event in Calendar.app. Goes through AppleScript so Calendar.app syncs the new event to all connected accounts. Returns the uid of the created event.

Update properties of an existing Calendar.app event identified by its uid. Only provided fields are changed. Goes through AppleScript so changes sync to all connected accounts.

Permanently delete a Calendar.app event identified by its uid. Goes through AppleScript so the deletion syncs to all connected accounts. This action cannot be undone.