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POST
/
:projectId
/
api
/
v7
/
events
/
:eventId
/
hosts
Add Host
curl --request POST \
  --url https://api.sublay.io/api/v6/:projectId/api/v7/events/:eventId/hosts \
  --header 'Content-Type: application/json' \
  --data '
{
  "userId": "<string>"
}
'
Adds a user to the event’s hostIds. Host-only — the caller must already be a host (service/master keys bypass this). The operation is idempotent (adding an existing host is a no-op) and takes a row-level lock to serialize concurrent host changes. There is no requirement that the target be a space member or invitee — any user can be made a host.

​
Path Parameters

​
eventId
string
required
UUID of the event.

​
Body Parameters

​
userId
string
required
The user to grant host on the event.

​
Response

Returns the updated Event with the new hostIds.

​
Error Responses

{ "error": "Event not found", "code": "event/not-found" }

{ "error": "Only a host of this event may manage its hosts.", "code": "event/forbidden" }
See also: useAddHost