ProgressEvents: URI scheme for SSE connection?

Is there a URI scheme to represent the remote side of an SSE connection?

The use case is that we have a system which sends events out either through
an http post method or through SSE (we chose SSE for the simplicity rather
than going to full websockets). However, we have an issue in that we cannot
figure out how to represent the remote SSE connections so that an
administrator on the system can see which systems are streaming events and
if necessary close those sessions.

Do you have any guidance?

-Patrick Boyd