How do I determine the workspace name and the URL for the workspace from within an App

Hi, I’m a bit new,
I’m writing an App that needs to be able to communicate with an outside service after the application is triggered by a SlashCommand. I want to send the outside service an endpoint address that I created within the SlashCommand. I’ve been going through the accessors object, which gives the path to the application, but not the domain for the current workspace.
How do I get the workspace name and domain address?