You can use the Save As option to create a new API record using an existing one.
When you use this option, all the configurations from the selected API are copied and create a API record. You can provide a new name or save the API with the default name ( a prefix “copy of” is added to the existing name).
You must have Create Web Asset permission to clone an API.
To clone an API, select or hover over an API record, and from the Quick Actions menu, click Save As.