Hey, thx for your reply. That's exactly what I decided to do. It took me some times to be able to build the chip sample but I was successfull. The API if not exaclty the same as the Matter framework but it is easy to adapt. I can now successufuly commission a Matter wifi device using the Matter API but I a stuck on the control part. In the chiptool sample, it is possible to create a MTRBaseDevice from a controller and an ID but this init method is private in the official Matter API.