Random thought: it might be helpful to give Tent-the-protocol a different name than Tent-the-server-implementation. In other words, "Tent" means either the protocol you're specifying, or the server software you're planning on releasing, but not both.

An analogue would be the naming distinction between HTTP, the protocol, and httpd, the first Web server (http://en.wikipedia.org/wiki/CERN_httpd). That naming split made it easier for people to understand what part of the system others were talking about, and helped make it clear that the two pieces were not tightly coupled to each other.

Maybe you're already planning on doing this when you release the server, it's not clear from the web site. If that's the case, feel free to ignore...