I was wondering if it might be possible to include, at least in the first page, but if it's easier it could be on all pages, either a total expected number of followers/friends, or a total expected number of returned pages when the cursor parameter is provided for friends/ids and followers/ids? I'm assuming since you're moving to the cursor-based approach you ought to be able to accurately count this now since it's a snapshot of the data at that time. The reason I think that would be useful is that occasionally Twitter goes down or introduces code that could break this. This would enable us to be absolutely sure we've hit the end of the entire set. I guess another approach could also be to just list the last expected cursor ID in the set so we can be looking for that.