Coinbase Institutional CBExchange JavaScript SDK example: publicWs.ts
Coinbase Institutional CBExchange public websocket JavaScript example for the Siebly Coinbase SDK, covering exchange REST API and WebSocket integration, setup, and production SDK docs.
We use environment variables in our examples for API keys. It is your responsibility to manage and secure your keys appropriately.
examples/Coinbase/Institutional/CBExchange/WebSockets/publicWs.ts
What this example covers
- Coinbase WebSocket stream JavaScript example.
- Uses the Siebly Coinbase SDK package
coinbase-apiinstead of hand-written WebSocket plumbing. - Source path:
Coinbase/Institutional/CBExchange/WebSockets/publicWs.ts. - Example category: Institutional CBExchange.
- Imports SDK symbols including
WebsocketClient. - Calls SDK methods such as
on(),subscribe().
How to use this example
- Start here for the specific request or stream pattern, then check the matching SDK guide for install, credentials, and operational notes.
- For WebSocket examples, keep reconnect, resubscribe, heartbeat, and event-handler behavior explicit in your service.
- Open the repository source when you need the latest committed version: GitHub source file.
import { WebsocketClient } from 'coinbase-api'; async function start() { /** * All websockets are available via the unified WebsocketClient. * * Below are examples specific to websockets in this product group. */ const client = new WebsocketClient(); client.on('open', (data) => { console.log('open: ', data?.wsKey); }); // Data received client.on('update', (data) => { console.info(new Date(), 'data received: ', JSON.stringify(data)); }); // Something happened, attempting to reconnect client.on('reconnect', (data) => { console.log('reconnect: ', data); }); // Reconnect successful client.on('reconnected', (data) => { console.log('reconnected: ', data); }); // Connection closed. If unexpected, expect reconnect -> reconnected. client.on('close', (data) => { console.error('close: ', data); }); // Reply to a request, e.g. "subscribe"/"unsubscribe"/"authenticate" client.on('response', (data) => { console.info('response: ', JSON.stringify(data, null, 2)); // throw new Error('res?'); }); client.on('exception', (data) => { console.error('exception: ', data); }); try { /** * Use the client subscribe(topic, market) pattern to subscribe to any websocket topic. * * - You can subscribe to topics one at a time or many in one request. * - Topics can be sent as simple strings, if no parameters are required. * - Coinbase Market Data is the traditional feed which is available without authentication. * - To use this feed, use 'exchangeMarketData' as the wsKey for each subscription command: */ // client.subscribe('status', 'exchangeMarketData'); /** * Or send a more structured object with parameters, e.g. if parameters are required */ // const tickerSubscribeRequest: WsTopicRequest = { // topic: 'ticker', // /** // * Anything in the payload will be merged into the subscribe "request", // * allowing you to send misc parameters supported by the exchange (such as `product_ids: string[]`) // */ // payload: { // product_ids: ['ETH-USD', 'ETH-EUR'], // }, // }; // client.subscribe(tickerSubscribeRequest, 'exchangeMarketData'); /** * Subscribe to the "heartbeat" topic for a few symbols */ // client.subscribe( // { // topic: 'heartbeat', // payload: { // product_ids: ['ETH-USD', 'BTC-USD'], // }, // }, // 'exchangeMarketData', // ); // client.subscribe( // { // topic: 'level2', // payload: { // product_ids: ['ETH-USD', 'BTC-USD'], // }, // }, // 'exchangeMarketData', // ); // /** // * Or, send an array of structured objects with parameters, if you wanted to send multiple in one request // */ // // client.subscribe([level2SubscribeRequest, anotherRequest, etc], 'advTradeMarketData'); /** * Other Coinbase Exchange public websocket topics: */ client.subscribe( [ // https://docs.cdp.coinbase.com/exchange/docs/websocket-channels#heartbeat-channel { topic: 'heartbeat', payload: { product_ids: ['ETH-EUR'], }, }, // https://docs.cdp.coinbase.com/exchange/docs/websocket-channels#status-channel 'status', // https://docs.cdp.coinbase.com/exchange/docs/websocket-channels#auction-channel { topic: 'auctionfeed', payload: { product_ids: ['LTC-USD'], }, }, // https://docs.cdp.coinbase.com/exchange/docs/websocket-channels#matches-channel { topic: 'matches', payload: { product_ids: ['BTC-USD'], }, }, // https://docs.cdp.coinbase.com/exchange/docs/websocket-channels#rfq-matches-channel { topic: 'rfq_matches', payload: { // Optional: // product_ids: ['ETH-USD', 'BTC-USD'], }, }, // https://docs.cdp.coinbase.com/exchange/docs/websocket-channels#ticker-channel { topic: 'ticker', payload: { product_ids: ['ETH-USD', 'BTC-USD'], }, }, // https://docs.cdp.coinbase.com/exchange/docs/websocket-channels#ticker-batch-channel { topic: 'ticker_batch', payload: { product_ids: ['ETH-USD', 'BTC-USD'], }, }, // https://docs.cdp.coinbase.com/exchange/docs/websocket-channels#level2-batch-channel { topic: 'level2_batch', payload: { product_ids: ['ETH-USD', 'BTC-USD'], }, }, ], 'exchangeMarketData', ); } catch (e) { console.error('Subscribe exception: ', e); }} start();