API
Answer an invitation
Accepts, declines or tentatively accepts an invitation, and tells the organiser.
POST/calendar/events/{id}/respond
Runs the real call on your workspace.
POST /calendar/events/{id}/respond
Accepts, declines or tentatively accepts an invitation, and tells the organiser.
Example
Needs calendar:write and emails:send. response is ACCEPTED, DECLINED or TENTATIVE.
curl -X POST "$OE/calendar/events/cal_7b2e4d9a1c6f30e85d2a7b41/respond" -H "$AUTH" -H 'content-type: application/json' -d '{ "response": "ACCEPTED" }'{ "object": "calendar_event", "id": "cal_7b2e4d9a1c6f30e85d2a7b41", "summary": "Quarterly review", "organizer": { "email": "[email protected]", "name": "Lin" }, "isOrganizer": false, "attendees": [ { "object": "calendar_attendee", "email": "[email protected]", "name": null, "partstat": "ACCEPTED", "role": "REQ-PARTICIPANT", "rsvp": true, "cutype": null, "respondedAt": "2026-10-02T14:20:05.000Z" } ]}The answer goes by email from the invited address the key may send as. When the invitation went to more than one of yours, respondingAs picks which, and an event that invited none of them is a 403 not_invited.
A cancelled meeting is a 409 event_cancelled, and when the organiser cannot be reached nothing changes and the call is a 409 reply_not_sent.