Right now you can configure the logging for Netty and gRPC to the appropriate level, which would allow you to log every call in great detail.
The bindings do not add logging on top of that, as the user is likely to have the appropriate knowledge of the domain to know what and how to log better contextualized information. If you need better contextualized information, adding logs to your application is the way to go right now.
Regarding the interceptors, unfortunately gRPC’s documentation seems to be fairly lacking in this regard, but they would be something that can be added to a client upon construction that intercepts calls and performs some kind of action. We use them on the server side to perform authentication and logging, but there are also client-side interceptors available in gRPC (docs). This is something that we may add in the future.