To make this even more confusing, a "Web hook" is usually a URL on your server that receives requests as a result of events somewhere else. Discord is using the term almost completely differently to refer to an HTTP API for posting notifications to Discord chats, instead of a mechanism for receiving events from Discord at some chosen URL.

Unless Discord intends for these API URLs to be set as "Web hooks" in other services and produce notifications in a Discord chat?

I would suggest a name more like WebService::Discord::Notifier.