All the installed third-party APIs are listed on 'Third party APIs' page.
It has a tree structure view of the third party APIs list.
We have the list of APIs with the request method, API name, and its path.
When you click on the 'vial' icon you will redirect to the API testing page. There you can test the API.
On the right section, users can save/edit the selected API settings. Just click on the 'Add Third party API settings' button, and it will save new settings for you.