createStreamMarker
Twitch API: Create Stream Marker
Adds a marker to a live stream. A marker is an arbitrary point in a live stream that the broadcaster or editor wants to mark, so they can return to that spot later to create video highlights.
You may not add markers if the stream is not live, has not enabled VOD, is a premiere, or is a rerun of a past broadcast.
Return
the single marker that was added.
Parameters
userId
the ID of the broadcaster that's streaming content. This ID must match the user ID in the access token or the user in the access token must be one of the broadcaster's editors.
description
a short description of the marker to help the user remember why they marked the location. The maximum length of the description is 140 characters.