Confluence Calendar API to Post Events

[Jeff Munoz]

I am trying to create an event on a Conflunence calendar using an admin account. When using my own account ID for the "person" field, the event is created successfully. However, any other account ID results in an "Invalid user" error. This occurs on all calendars, even those without any restrictions on them. This also occurs across multiple spaces. I added an event for the user in the UI and then tried to use the API again, but the same result occurred. All user IDs were obtained from the /wiki/rest/api/user endpoint. Below is the payload used. Any ideas as to why only one account ID works?

PUT request

http://domain.atlassian.net/wiki/rest/calendar-services/1.0/calendar/events.json

Auth - Basic Auth

Header -  Content-Type: application/x-www-form-urlencoded

{

"subCalendarId": "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",

"eventType": "event",

"what": "Test event",

"person": "123456:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",

"startDate": "November 24, 2025",

"allDayEvent": "false",

"startTime": "2:00 PM",

"endTime": "10:00 AM",

"endDate": "November 25, 2025",

"userTimeZoneId": "America/New_York"

}

[Fabio Racobaldo _Catworkx_]

Hi @Jeff Munoz and welcome,

for my knowledge there's not an official rest api to manage events on confluence (here an open request for that https://jira.atlassian.com/browse/CONFCLOUD-51696 )

Where did u find documentation about rest api that you are trying to use? 

Please le tme know,

Fabio

[Jeff Munoz]

Hello @Fabio Racobaldo _Catworkx_,

I did not find any official documentation, just previous posts regarding the issue, which can be found here.

Thanks,

Jeff