instead if I send:
192.168.2.169:3344/printer/api/P430?a=listPrinter&apikey=
i get this:
[{"active":true,"job":"none","name":"peek","online":0,"pauseState":0,"paused":false,"slug":"peek"},{"active":true,"job":"none","name":"P430","online":0,"pauseState":0,"paused":false,"slug":"P430"}]