There are API endpoints to mark messages chats read and unread. The Mark Chat as Read endpoint’s description states, “Sets the specified chat status to 'Read' for the current user.”
The GetChats documentation states that a chat can have a status property, but only for ‘Team’ chats; the Team status.
As you are evidently unable to use the status property to know a chat’s read status, and there is no readStatus on a chat like there is for messages in the SMS & Fax API, how is one suppose to know when a particular chat/conversation is read or unread?