# Pioneer

The final step is to integrate Pioneer into the existing Vapor application using the resolver and schema declared before.

Adding Pioneer is very simple, construct the instance with the preferred configuration and apply it to any RouteBuilder

import Vapor

let app = try Application(.detect())

let server = Pioneer(
    schema: schema,
    resolver: Resolver(),
    contextBuilder: { req, res in
        Context(req: req, res: res)
    },
    websocketContextBuilder { req, params, gql in 
        Context(req: req, res: .init())
    },
    websocketProtocol: .graphqlWs,
    introspection: true,
    playground: .sandbox
)

defer {
    app.shutdown()
}

server.applyMiddleware(on: app)

try app.run()

Here, we will enable introspection and Apollo Sandbox for the playground as well as use the graphql-ws sub-protocol for GraphQL over WebSocket.

Now, just open http://localhost:8080/playground to go the Apollo Sandbox and play with the queries, mutations, and even subscriptions.