Use this service to find out how many parts the user needs to build the specified set. This will use any sets and loose parts the user has configured in their account. It returns two numbers - the total number of parts in the set and the number of parts the user is missing - so you can calculate the % yourself.
key - API Key
format - How to display output data. Valid values: xml, json, csv, tsv
callback - Optional JSONP callback function name
email - The user's logon email.
pass - The user's password.
hash - User Hash Key, alternate to providing email+pass.
set - The Set ID to check.
Output data with fields: