//-- Intent:verifies thatcontact list with ListCode of 668487 exists --// $.ajax({ type: "GET", headers: {"SwiftAPI-Key": "12345"}, contentType: "application/json; charset=utf-8", url: "http://api.v4.swiftreach.com/api/ContactLists/Exists/668487", dataType: "json" success: function(result) { // Do something with the result } }); <!-- example return value --> true