use consumer key instead of apikey?

[depend]

It seems the current fetch_url "http://getpocket.com/v3/get?&apikey=..." has stopped working. When I sent that URL I can't get my pocket list. Instead I am getting some random list. I checked getpocket documentation at http://getpocket.com/developer/docs/authentication. It says "Important note: If you have a previous apikey from Read It Later/Pocket - that will no longer work. You will need a new consumer key."

Is it easy to switch to the new authentication mechanism?

Thanks.