is it possible to mount the GraphQLServer to an express route, something like:

var app = express();
app.use('/graphql', graphqlHTTP({
  schema: schema,
  rootValue: root,
  graphiql: true,
}));
app.listen(4000);
console.log('Running a GraphQL API server at localhost:4000/graphql');

Are you looking for something like this? https://github.com/graphql/express-graphql

yes exactly -- but with prisma!

You should be able to create an executable schema using stitching with Prisma and mount it on an express endpoint. Very roughly like this : https://github.com/divyenduz/bind-gql-tools/blob/master/index.js Stitching docs: https://www.apollographql.com/docs/graphql-tools/schema-stitching.html

@divyendu that was super helpful!