Requesting Yahoo Profile Details for a User ID

Question

Hi,

I am implementing yahoo chat client and I need to get profile details for my chat list contacts.

I found to request avatar I could use following request.

http://img.msg.yahoo.com/avatar.php?yids=[YAHOO_ID]&format=png

But is there any similar url or url format to request profile details from Yahoo, without using their APIs that ask for applicationID.

Is this possible ? I think Pidgin like clients do this.

Thanks,

Tharindu