Servlets, EJBs, WebSockets, JPA, etc expose its components as children of the subsystem in the management API. For example to list the stateless EJBs of a deployment:

[standalone@localhost:9990 /] /deployment=cdivsejb.war/subsystem=ejb3:read-children-resources(child-type=stateless-session-bean)

This makes it specially easy to navigate trough the web console (attached screenshot).

To read JAX-RS resources, the command would be:
[standalone@localhost:9990 /] /deployment=cdivsejb.war/subsystem=jaxrs:show-resources()

I propose to make deprecate the show-resources operation and create a new "resources" child, containing the Rest resources.