Postman Mock API Server - how to make it private after I already created the collection and made it public

As in the title. I have scoured the Postman documentation and went through different nooks and crannies in Postman desktop app but I am unable to make my mock api server private.

I have generated a Postman API Key and I am passing it with all the requests in mock api as x-api-key header but it doesn't change anything. I can still access the collection's endpoints by simply pasting the url in the browser.

When I was creating the mock api server, I choose public option to speed up the setup but now would like to make it private.

If the Mock has already be created as a Public Server, you can make it Private by editing the Mock from the Collection menu in the app.

• Press the > option on the Collection name
• Select the Mocks tab
• Select the Pencil icon to Edit the Mock Server
• Check the Make this mock server private box
• Press the Save Changes button

Once this has been changed to a Private Server, you should be able to call it only using the x-api-key token in the header.

More details can be found on the Postman Learning Center:

https://learning.getpostman.com/docs/postman/mock-servers/setting-up-mock/#editing-mock-servers