Edward Chernenko writes:
Unless there are significant reasons to keep it around, it will be removed both from the extensions and from the mediawiki sites fairly soon.
That query api was written to secure people who write bots from web interface changes. Tell that "developer" who wants to remove it now, that I'll never use _his_ "stable interfaces" any more, because I just haven't enough time to rewrite what I was working on for weeks just because someone "has ported that to some other interface" and wants to delete it without backward compability. That developer really doesn't understand what he is doing.
-- Ed
Don't worry. We're going to keep it for enough time, so everybody will be able to rewrite his code. --VasilievVV