graphql-ccxt

wake up bears 🐻 ride bulls 🐂

You can read the graphql-ccxt GraphQL schema source here.

Features

Joins together GraphQL and CCXT: can fetch prices, read balance, open orders, etc.
No dependencies other than graphql and ccxt (by the way, installed as peer deps).
Last but not least, it can be used to increase your income 💰💰💰

Credits

Tons of kudos to creators of GraphQL and CCXT. Coders that designed and implemented both projects are so smart and passionate, they are a great example of the power of open source.

Installation

Install this package and add the following peer dependencies:

graphql
ccxt

For instance with npm launch

npm install graphql ccxt graphql-ccxt

Demo

Get this repository code.
Install deps: npm install
Launch the demo: npm start

Then point your browser to http://localhost:4000/graphql

query

Take a look to examples/ folder. It contains both queries and mutations, among others:

Access private API

Optionally, before launching the demo server, set the following environment variables accordingly:

BINANCE_APIKEY
BINANCE_APISECRET

Demo source code

The demo server is implemented by the following code.

const express = require('express')
const { graphqlHTTP } = require('express-graphql')
const { buildSchema } = require('graphql')
const {
  GraphqlCcxtContext,
  graphqlCcxtRoot,
  graphqlCcxtSchemaSource
} = require('graphql-ccxt')

async function startDemo() {
  // 1. Create GraphQL context. It holds your exchange clients.
  // //////////////////////////////////////////////////////////////////////////
  const context = new GraphqlCcxtContext()

  // Add few public clients on some exchanges.
  await context.addClient({ exchange: 'binance' })
  await context.addClient({ exchange: 'coinbase' })
  await context.addClient({ exchange: 'bitfinex' })
  await context.addClient({ exchange: 'bittrex' })
  await context.addClient({ exchange: 'kraken' })
  // Add another Binance client, provide a `label` to disambiguate it.
  // It will be private if environment variables are defined,
  // otherwise it will be public.
  await context.addClient({
    exchange: 'binance',
    label: 'My Binance',
    apiKey: process.env.BINANCE_APIKEY,
    secret: process.env.BINANCE_APISECRET
  })

  // 2. Build GraphQL schema.
  // //////////////////////////////////////////////////////////////////////////
  const schema = buildSchema(graphqlCcxtSchemaSource)

  // 3. Launch express-graphql server.
  // //////////////////////////////////////////////////////////////////////////
  express()
    .use(
      '/graphql',
      graphqlHTTP({
        schema,
        rootValue: graphqlCcxtRoot,
        context,
        graphiql: {
          defaultQuery: '{ clients { exchange } }'
        }
      })
    )
    .listen(4000, () => {
      console.info(
        'Running a graphql-ccxt server at http://localhost:4000/graphql'
      )
    })
}

startDemo()

License

MIT