This is an example of GraphQL server supporting Relay written with Play framework and Sangria , it also uses webpack for client side asset generation. On the right hand side you see a textual representation of the GraphQL schema which is implemented on the server and that you can query here. On the left hand side you can execute a GraphQL query and see the results of its execution. If you prefer, you can also use GraphiQL This example is based on the Relay Star Wars example. You can find more info here.