services.</p><h2 id=before-you-begin>Before you begin</h2><p>If you don&rsquo;t have an Endpoints service and want to try it out, you can follow
the <a href=https://cloud.google.com/endpoints/docs/openapi/get-started-kubernetes-engine>instructions</a>
to setup an Endpoints service on GKE.
After setup, you should be able to get an API key and store it in <code>ENDPOINTS_KEY</code> environment variable and the external IP address <code>EXTERNAL_IP</code>.
You may test the service using the following command:<