[philip1209]

Oh interesting - you appear to be correct. You need to enable it through the APIs page then you have access.

[mh-]

confirmed I was able to do this (simply enable the API) on an existing project in the API Console

[andrewmunsell]

Oddly, I get a "only available for new customers" message, even after I enable the API.

[crb]

That's because the link from the GKE page is for the free Google Cloud Platform trial ($300 credit), which is only available for new customers.

[andrewmunsell]

Ah, that would make sense.