Currently, it's possible to have responses automatically expanded by using the expandAllResponses config option. However, it is not possible to control the behavior of any nested fields.

If you have a large response object, and you want to have an overview of the fields directly inside it, without any sub-items (nested fields), you cannot do this today. I think it would be valuable to add a configuration option that would control the level of expansion for different objects, including enums etc. Something like collapseNestedObjects which, if set to true, makes it so that you have to click through each level.

Alternatively, there could be a button in the UI: "collapse all", "collapse all nested items", something like that.