So far I haven't seen Google publish anything of significance for interacting with their RCS server, or the details of their implementation of open messaging co

So far I haven't seen Google publish anything of significance for interacting with their RCS server, or the details of their implementation of open messaging concepts. Where they're not using MLS, they're using the Signal protocol. Without publishing details about key servers and authentication methods, none of their layers on top of open standards such as RCS are very beneficial to anyone but them.