List the meeting types that can be booked. Start here: every booking needs a meetingTypeId, and the duration and host come from the meeting type.

Get bookable time slots for a meeting type in a date range. Returns the slots a booking will actually be accepted for — do not infer availability from the calendar.

Book a slot. Use a start time returned by get_availability — booking an unlisted slot is rejected. Creates a real appointment and sends real invitations.

Move an appointment to a new start time. Duration is unchanged. Validates availability unless ignoreAvailability is set.

Cancel an appointment and notify attendees. For a group booking pass attendeeId to remove one person, or cancelAll to cancel the whole appointment — passing neither is rejected, so a bulk cancel is never accidental.

List upcoming and past appointments with pagination. Use for "what is on my calendar" and for finding an appointmentId to change.

Today's appointments for the authenticated user. Cheaper and more precise than filtering list_appointments by date.

Add guest email addresses to an existing appointment. They receive the invitation and updates.

List connected calendars (Google, Outlook). Use to check whether a host actually has a calendar attached before diagnosing why availability looks wrong.