WebSocket

import { PolymarketUS } from 'polymarket-us';

const client = new PolymarketUS({
  keyId: process.env.POLYMARKET_KEY_ID,
  secretKey: process.env.POLYMARKET_SECRET_KEY,
});

const ws = client.ws.private();

// Register event handlers
ws.on('orderSnapshot', (data) => console.log('Orders:', data));
ws.on('orderUpdate', (data) => console.log('Order update:', data));
ws.on('positionSnapshot', (data) => console.log('Positions:', data));
ws.on('positionUpdate', (data) => console.log('Position update:', data));
ws.on('accountBalanceSnapshot', (data) => console.log('Balance:', data));
ws.on('error', (e) => console.error('Error:', e));

await ws.connect();

// Subscribe to updates
ws.subscribeOrders('my-orders');
ws.subscribePositions('my-positions');
ws.subscribeAccountBalance('my-balance');

const ws = client.ws.markets();

// Register event handlers
ws.on('marketData', (data) => console.log('Book:', data));
ws.on('marketDataLite', (data) => console.log('BBO:', data));
ws.on('trade', (data) => console.log('Trade:', data));

await ws.connect();

// Subscribe to market data
ws.subscribeMarketData('book', ['btc-100k-2025']);
ws.subscribeMarketDataLite('prices', ['btc-100k-2025']);
ws.subscribeTrades('trades', ['btc-100k-2025']);