API Console has a different user interface compared to ARC's normal view. It focuses on the documentation part. From here you can learn how the API work but also consume the API through the "Try it" panel. In this editor, the request editor is pre-configured to ask for the request parameters required for the successful connection. Because the parameters are described in the API specification the request editor knows what kind of data to expect. This helps you to faster build the HTTP request and see the result.