I believe that the API Key error is the first that comes back (in the
chain of errors). So just about any call to the API would work. But I
wouldn't really rely on that.
If you did a call to:
http://api.drop.io/drops/?api_key=<INSERT YOUR API KEY>&version=2.0
and got a 404, your key works. I know it sounds strange, but even if
we were to do something at the /drops level, it would probably return
something useful.
Jake Good
http://dev.drop.io