Google: Creates an event — request body — body

API reference · Contract 2026-10-27

SDK schema: Creates an event — request body — body

Field	Type	Presence	Description and constraints
$	object	Root
anyoneCanAddSelf	boolean	Optional	Whether anyone can invite themselves to the event (deprecated). Optional. The default is False. Default: false
attachments	array	Optional	File attachments for the event. In order to modify attachments the supportsAttachments request parameter should be set to true. There can be at most 25 attachments per event,
attachments[]	Model	Each item	Expand Creates an event — response body — attachments item
attendees	array	Optional	The attendees of the event. See the Events with attendees guide for more information on scheduling events with other calendar users. Service accounts need to use domain-wide delegation of authority to populate the attendee list.
attendees[]	Model	Each item	Expand Creates an event — request body — body attendees item
attendeesOmitted	boolean	Optional	Whether attendees may have been omitted from the event’s representation. When retrieving an event, this may be due to a restriction specified by the maxAttendee query parameter. When updating an event, this can be used to only update the participant’s response. Optional. The default is False. Default: false
birthdayProperties	Model	Optional	Expand Creates an event — response body — birthday Properties Birthday or special event data. Used if eventType is “birthday”. Immutable.
colorId	string	Optional	The color of the event. This is an ID referring to an entry in the event section of the colors definition (see the colors endpoint). Optional.
conferenceData	Model	Optional	Expand Creates an event — response body — conference Data The conference-related information, such as details of a Google Meet conference. To create new conference details use the createRequest field. To persist your changes, remember to set the conferenceDataVersion request parameter to 1 for all event modification requests. Warning: Reusing Google Meet conference data across different events can cause access issues and expose meeting details to unintended users. To help ensure meeting privacy, always generate a unique conference for each event by using the createRequest field.
created	string	Optional	Creation time of the event (as a RFC3339 timestamp). Read-only. Format: date-time
creator	Model	Optional	Expand Creates an event — response body — creator
description	string	Optional	Description of the event. Can contain HTML. Optional.
end	Model	Required within parent	Expand Creates an event — response body — end The (exclusive) end time of the event. For a recurring event, this is the end time of the first instance.
endTimeUnspecified	boolean	Optional	Whether the end time is actually unspecified. An end time is still provided for compatibility reasons, even if this attribute is set to True. The default is False. Default: false
etag	string	Optional	ETag of the resource.
eventLabelId	string	Optional	The ID of the event label assigned to the event. Optional. This refers to the ID of an entry in the labelProperties.eventLabels property of the calendar (see the Calendars.get endpoint.) This property supersedes the index-based colorId property. To set or change this property, you need to specify eventLabelVersion=1 in the parameters of the insert, import, update, and patch methods. Setting an empty string, or not setting this field at all, will remove the existing label from the event.
eventType	string	Optional	Specific type of the event. This cannot be modified after the event is created. Possible values are: - “birthday” - A special all-day event with an annual recurrence. - “default” - A regular event or not further specified. - “focusTime” - A focus-time event. - “fromGmail” - An event from Gmail. This type of event cannot be created. - “outOfOffice” - An out-of-office event. - “workingLocation” - A working location event. Default: default
extendedProperties	Model	Optional	Expand Creates an event — response body — extended Properties
focusTimeProperties	Model	Optional	Expand Creates an event — response body — focus Time Properties Focus Time event data. Used if eventType is focusTime.
gadget	Model	Optional	Expand Creates an event — request body — body gadget
guestsCanInviteOthers	boolean	Optional	Whether attendees other than the organizer can invite others to the event. Optional. The default is True. Default: true
guestsCanModify	boolean	Optional	Whether attendees other than the organizer can modify the event. Optional. The default is False. Default: false
guestsCanSeeOtherGuests	boolean	Optional	Whether attendees other than the organizer can see who the event’s attendees are. Optional. The default is True. Default: true
hangoutLink	string	Optional	An absolute link to the Google Hangout associated with this event. Read-only.
htmlLink	string	Optional	An absolute link to this event in the Google Calendar Web UI. Read-only.
iCalUID	string	Optional	Event unique identifier as defined in RFC5545. It is used to uniquely identify events accross calendaring systems and must be supplied when importing events via the import method. Note that the iCalUID and the id are not identical and only one of them should be supplied at event creation time. One difference in their semantics is that in recurring events, all occurrences of one event have different ids while they all share the same iCalUIDs. To retrieve an event using its iCalUID, call the events.list method using the iCalUID parameter. To retrieve an event using its id, call the events.get method.
id	string	Optional	Opaque identifier of the event. When creating new single or recurring events, you can specify their IDs. Provided IDs must follow these rules: - characters allowed in the ID are those used in base32hex encoding, i.e. lowercase letters a-v and digits 0-9, see section 3.1.2 in RFC2938 - the length of the ID must be between 5 and 1024 characters - the ID must be unique per calendar Due to the globally distributed nature of the system, we cannot guarantee that ID collisions will be detected at event creation time. To minimize the risk of collisions we recommend using an established UUID algorithm such as one described in RFC4122. If you do not specify an ID, it will be automatically generated by the server. Note that the icalUID and the id are not identical and only one of them should be supplied at event creation time. One difference in their semantics is that in recurring events, all occurrences of one event have different ids while they all share the same icalUIDs.
kind	string	Optional	Type of the resource (“calendar#event”). Default: calendar#event
location	string	Optional	Geographic location of the event as free-form text. Optional.
locked	boolean	Optional	Whether this is a locked event copy where no changes can be made to the main event fields “summary”, “description”, “location”, “start”, “end” or “recurrence”. The default is False. Read-Only. Default: false
organizer	Model	Optional	Expand Creates an event — response body — organizer
originalStartTime	Model	Optional	Expand Creates an event — response body — end For an instance of a recurring event, this is the time at which this event would start according to the recurrence data in the recurring event identified by recurringEventId. It uniquely identifies the instance within the recurring event series even if the instance was moved to a different time. Immutable.
outOfOfficeProperties	Model	Optional	Expand Creates an event — response body — out Of Office Properties Out of office event data. Used if eventType is outOfOffice.
privateCopy	boolean	Optional	If set to True, Event propagation is disabled. Note that it is not the same thing as Private event properties. Optional. Immutable. The default is False. Default: false
recurrence	array	Optional	List of RRULE, EXRULE, RDATE and EXDATE lines for a recurring event, as specified in RFC5545. Note that DTSTART and DTEND lines are not allowed in this field; event start and end times are specified in the start and end fields. This field is omitted for single events or instances of recurring events.
recurrence[]	string	Each item
recurringEventId	string	Optional	For an instance of a recurring event, this is the id of the recurring event to which this instance belongs. Immutable.
reminders	Model	Optional	Expand Creates an event — request body — body reminders
sequence	integer	Optional	Sequence number as per iCalendar. Format: int32
source	object	Optional	Source from which the event was created. For example, a web page, an email message or any document identifiable by an URL with HTTP or HTTPS scheme. Can only be seen or modified by the creator of the event.
source.title	string	Optional	Title of the source; for example a title of a web page or an email subject.
source.url	string	Optional	URL of the source pointing to a resource. The URL scheme must be HTTP or HTTPS.
start	Model	Required within parent	Expand Creates an event — response body — end The (inclusive) start time of the event. For a recurring event, this is the start time of the first instance.
status	string	Optional	Status of the event. Optional. Possible values are: - “confirmed” - The event is confirmed. This is the default status. - “tentative” - The event is tentatively confirmed. - “cancelled” - The event is cancelled (deleted). The list method returns cancelled events only on incremental sync (when syncToken or updatedMin are specified) or if the showDeleted flag is set to true. The get method always returns them. A cancelled status represents two different states depending on the event type: - Cancelled exceptions of an uncancelled recurring event indicate that this instance should no longer be presented to the user. Clients should store these events for the lifetime of the parent recurring event. Cancelled exceptions are only guaranteed to have values for the id, recurringEventId and originalStartTime fields populated. The other fields might be empty. - All other cancelled events represent deleted events. Clients should remove their locally synced copies. Such cancelled events will eventually disappear, so do not rely on them being available indefinitely. Deleted events are only guaranteed to have the id field populated. On the organizer’s calendar, cancelled events continue to expose event details (summary, location, etc.) so that they can be restored (undeleted). Similarly, the events to which the user was invited and that they manually removed continue to provide details. However, incremental sync requests with showDeleted set to false will not return these details. If an event changes its organizer (for example via the move operation) and the original organizer is not on the attendee list, it will leave behind a cancelled event where only the id field is guaranteed to be populated.
summary	string	Optional	Title of the event.
transparency	string	Optional	Whether the event blocks time on the calendar. Optional. Possible values are: - “opaque” - Default value. The event does block time on the calendar. This is equivalent to setting Show me as to Busy in the Calendar UI. - “transparent” - The event does not block time on the calendar. This is equivalent to setting Show me as to Available in the Calendar UI. Default: opaque
updated	string	Optional	Last modification time of the main event data (as a RFC3339 timestamp). Updating event reminders will not cause this to change. Read-only. Format: date-time
visibility	string	Optional	Visibility of the event. Optional. Possible values are: - “default” - Uses the default visibility for events on the calendar. This is the default value. - “public” - The event is public and event details are visible to all readers of the calendar. - “private” - The event is private and only event attendees may view event details. - “confidential” - The event is private. This value is provided for compatibility reasons. Note on recurring events: Changing the visibility of a single instance of a recurring event can affect all instances of the series. If the new setting is more restrictive (e.g. from public to private), it is applied to all instances. If the new setting is less restrictive (e.g. from private to public), the change is ignored. To make a recurring event less restrictive, you must update the parent recurring event. Default: default
workingLocationProperties	Model	Optional	Expand Creates an event — response body — working Location Properties Working location event data.

Referenced models: Creates an event — response body — conference Data, Creates an event — response body — attachments item, Creates an event — response body — birthday Properties, Creates an event — response body — end, Creates an event — response body — focus Time Properties, Creates an event — response body — out Of Office Properties, Creates an event — response body — working Location Properties, Creates an event — request body — body attendees item, Creates an event — response body — creator, Creates an event — response body — extended Properties, Creates an event — request body — body gadget, Creates an event — response body — organizer, Creates an event — request body — body reminders