[asciimike]

Clarification: GAE Standard uses the Endpoints framework, which is Python and Java only (https://cloud.google.com/endpoints/docs/frameworks/about-clo...). Sorry for the confusion.

Flex uses ESP (https://github.com/cloudendpoints/esp), which is deployed as a sidecar, and works with any runtime.

As for EAP: unfortunately not. Personally, I'd like to see a managed version as opposed to the current framework or sidecar approach, as it'll be easier to implement across products, but that means it'll likely take a little longer.