@stem/apollo-server-koa

---

title: Koa description: Setting up Apollo Server with Koa

This is the Koa integration of Apollo Server. Apollo Server is a community-maintained open-source Apollo Server that works with all Node.js HTTP server frameworks: Express, Connect, Hapi, Koa and Restify. Read the docs.

npm install apollo-server-koa

Usage

import koa from 'koa'; // koa@2
import koaRouter from 'koa-router';
import koaBody from 'koa-bodyparser';
import { graphqlKoa } from 'apollo-server-koa';

const app = new koa();
const router = new koaRouter();
const PORT = 3000;

// koaBody is needed just for POST.
app.use(koaBody());

router.post('/graphql', graphqlKoa({ schema: myGraphQLSchema }));
router.get('/graphql', graphqlKoa({ schema: myGraphQLSchema }));

app.use(router.routes());
app.use(router.allowedMethods());
app.listen(PORT);

GraphiQL

You can also use apollo-server-koa for hosting the GraphiQL in-browser IDE. Note the difference between graphqlKoa and graphiqlKoa.

import { graphiqlKoa } from 'apollo-server-koa';

// Setup the /graphiql route to show the GraphiQL UI
router.get(
  '/graphiql',
  graphiqlKoa({
    endpointURL: '/graphql', // a POST endpoint that GraphiQL will make the actual requests to
  }),
);

In case your GraphQL endpoint is protected via authentication, or if you need to pass other custom headers in the request that GraphiQL makes, you can use the passHeader option – a string that will be added to the request header object.

For example:

import { graphiqlKoa } from 'apollo-server-koa';

router.get(
  '/graphiql',
  graphiqlKoa({
    endpointURL: '/graphql',
    passHeader: `'Authorization': 'Bearer lorem ipsum'`,
  }),
);

Principles

Apollo Server is built with the following principles in mind:

• By the community, for the community: Apollo Server's development is driven by the needs of developers
• Simplicity: by keeping things simple, Apollo Server is easier to use, easier to contribute to, and more secure
• Performance: Apollo Server is well-tested and production-ready - no modifications needed

Anyone is welcome to contribute to Apollo Server, just read CONTRIBUTING.md, take a look at the roadmap and make your first PR!