Mashery API 2.0 Trick

gistfile1.txt

// Next request will return only fields of package_key objects
{
    "method": "object.query",
    "params": ["SELECT * FROM package_keys WHERE apikey='abcdefgh'"],
    "id": 1
}

// But next one will return some related objects
// See http://support.mashery.com/docs/read/mashery_api/20/Query_Language for details
{
    "method": "object.query",
    "params": ["SELECT *, package, plan FROM package_keys WHERE apikey='abcdefgh'"],
    "id": 1
}