While not exactly what you are describing, I work for another company that uses protobufs extensively and we have some nice internal tools similar to what you d

While not exactly what you are describing, I work for another company that uses protobufs extensively and we have some nice internal tools similar to what you describe. I really wish we could open source those too. I feel like the wheel is reinvented a lot with protobuf in several of the large companies who use it.