You can gain more insight into your setup appending ?debug=requestinfo to any of your service routes or by browsing /requestinfo. By default, the RequestInfoFeature plugin is loaded in debug mode.

The output will give you all relevant information to inspect the loaded plugins, sent headers, embedded resources, and stats of the handlers in the ServiceStack processing chain (registered HTTP handlers, filters, view engines, service types, rest paths, and so on).

The object that gets sent back to the client is of type ServiceStack.Host.Handlers.RequestInfoResponse.