Got it.. needed a generator, query should be

http://en.wikipedia.org/w/api.php?action=query&generator=backlinks&gbltitle=caffeine

From: mediawiki-api-bounces@lists.wikimedia.org [mailto:mediawiki-api-bounces@lists.wikimedia.org] On Behalf Of Benjamin Good
Sent: Wednesday, June 16, 2010 9:52 AM
To: mediawiki-api@lists.wikimedia.org
Subject: [Mediawiki-api] getting backlinsk for a page

I'm wondering why this

http://en.wikipedia.org/w/api.php?action=query&titles=Caffeine&meta=siteinfo&list=backlinks

isn't working. Is there anything wrong with that request or is there something wrong with the API ?

The error code returned is

thanks

-Ben