To Download a Proxy (Nov 2017)
You use a proxy to manage your API without having to change its implementation and to prevent attacks on the server. Mule Runtime is the server that hosts a Mule proxy application.
Auto-generated proxies are not supported on Mule Runtime 4.0 (and Studio 7) in API Manager. If you are using Mule Runtime 3.x, and you have generated a proxy, you can download it by following this procedure.
In Anypoint Platform, click API Manager.
In API Administration, expand an API version to show its instances.
Click the name of an instance of an API version.
Select Download Proxy from the Actions dropdown.
Click the version of Mule you want to use with the proxy, or click Close to cancel.
The proxy downloads.