Other things besides ACME use .well-known...

[csawyerYumaed]

as an FYI,
"we register ourselves for route http:///.well-known/"
is a potential issue, for instance, it will break:
https://www.gnupg.org/blog/20160830-web-key-service.html
Other things besides ACME use .well-known, so it's probably not good to steal the whole uri.

[doublerebel]

This is a good point. I'm sorry I haven't had a chance to write more examples yet. I use this with Fabio, which is an L7 path router, so paths can be routed very specifically to different internal services. Traefik, Envoy, or HAProxy could be used instead of Fabio.

Also important, ten-ply-crest is an Express middleware and can attach to any existing express app or server. Very possible to run it in a pass-through proxy. I'll make sure to add these examples when I write more docs.