I think the question @waddink raises is whether this information is seen as a collection descriptor or stored elsewhere. For example, DiSSCo proposes to use Digital Object Architecture (DOA) and Digital Object Interface Protocol (DOIP), whereby the operations one could perform would be registered alongside the object while the descriptive content would likely be embedded in metadata within it.
It makes good sense to me that simple requests like @abentley offers are accommodated to help ensure many can participate. I don’t expect CD covering this will restrict other ideas and may help advance them (e.g. DiSSCo infrastructure could infer technical endpoints knowing the collection is available on Specify v8.2).