Hahaha, I'm terrible at this, sorry. So, now I've made sure it works with just a type specified (like http://bbapi.buzzerbeater.com/staff.aspx?type=0) where type can be 0, 1 or 2, and it will return the currently logged in teams staffmember.
Since I already made, I left the option to use ID to see info about staff that is for sale, like so http://bbapi.buzzerbeater.com/staff.aspx?id=4029237. I'm aware it's not easy to get a staffid for any staff but whatever, maybe someone will find a use for it or I make something in the future that will make staffid accessible.