How to restrict access to anypoint platform public url
Solution 1:
I think you confusing two different things:
- Accessing a public URL (ie https://anypoint.mulesoft.com)
- Authorization inside your organization's account
You can not restrict access to a site that you don't own, it is publicly accessible and needs to be accessed by other users. It doesn't even make sense really. Would you attempt to restrict access by others to google.com or twitter.com (or their API URLs)? It is not the right approach and it is just not possible.
What makes sense however is to manage permissions inside your organization in Anypoint Platform. It means when an user belonging to your organization logs in you can manage what of the available roles are permissions that user will have. You can do that in the Access Management page. You can also create custom roles with specific permissions and teams to better organize your users.