I was looking for a grpc library in c++ because the official one isn’t excellent and I found grpcxx via this blog https://u-a.medium.com/implementing-a-grpc-server-api-in-modern-c-devlog-2-3706ae91dbe6.

Maybe it was in the roadmap but I suggest it, adding clang-tidy, cppcheck and include what-you-use and to lint the project.

I also saw that you use libuv that is a very good library. I think adding a wrapper for asio would be and excellent choice, especially if the project is in c++20 with coroutines.

Finally, i looked the source code, I suggests you to move to header only library. You can do that because you are using many template and also, you are keeping small methods and to add grpcxx as library would be more easier.

I Hope my answer will help you and I am really excitting by this project 💪🏻💪🏻💪🏻.