Google App Engine does not seem to be down. In case this error could originate from your Node.js implementation, can you provide a minimal working example of your code demonstrating this issue?
Alternatively, you can verify the status of the endpoint you are triggering by sending it a request as demonstrated in this Quickstart <http://sending_a_request_to_the_sample_api> for Cloud Endpoints Frameworks on App Engine. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/7a45cd89-2d65-45fb-9d78-3721ff6f0a4b%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.