Please note these endpoints do not support OAuth2.0 or API key, require cookie authentication, and these APIs do not have the same stability guarantees as some of our more official Open Cloud APIs.
I’m waiting for a small update to how those pages are laid out before I respond to the other posts you mention above. We don’t currently have an “overview” page that refers to all of those swagger docs correctly.
I don’t think we’ll officially announce this, we do not want to overly encourage use of these older APIs since they only take cookie authentication.