I was thinking that it might be possible to make a few API calls to get the count, and just wrap those in LS for an open agent. However, the following caveat from the API docs seems to provide a hard limit to what you are looking for. Otherwise, you could probably write a few lines of code to get a count of docs in the view.
"NIFGetCollectionData is only useful for providing information about a collection which is not categorized. The index of a categorized collection is implemented using nested B-Trees, and it is not possible to provide useful information about all of the B-Trees which make up the index. If NIFGetCollectionData is called for a categorized collection, the data that is returned pertains only to the top-level category entries, and not to the main notes in the collection."
I was thinking that it might be possible to make a few API calls to get the count, and just wrap those in LS for an open agent. However, the following caveat from the API docs seems to provide a hard limit to what you are looking for. Otherwise, you could probably write a few lines of code to get a count of docs in the view.
"NIFGetCollectionData is only useful for providing information about a collection which is not categorized. The index of a categorized collection is implemented using nested B-Trees, and it is not possible to provide useful information about all of the B-Trees which make up the index. If NIFGetCollectionData is called for a categorized collection, the data that is returned pertains only to the top-level category entries, and not to the main notes in the collection."