Data Feeds

const ws = new WebSocket("wss://ws-subscriptions-clob.polymarket.com/ws/market");

ws.onopen = () => {
  // Subscribe to orderbook updates
  ws.send(JSON.stringify({
    type: "market",
    assets_ids: [tokenId]
  }));
};

ws.onmessage = (event) => {
  const data = JSON.parse(event.data);
  // Handle orderbook update
};

// Requires authentication
const userWs = new WebSocket("wss://ws-subscriptions-clob.polymarket.com/ws/user");

userWs.onopen = () => {
  userWs.send(JSON.stringify({
    type: "user",
    auth: {
      apiKey: "your-api-key",
      secret: "your-secret",
      passphrase: "your-passphrase"
    },
    markets: [conditionId] // Optional: filter to specific markets
  }));
};

userWs.onmessage = (event) => {
  const data = JSON.parse(event.data);
  // Handle order fills, cancellations, etc.
};

const response = await fetch(
  "https://gamma-api.polymarket.com/markets?active=true"
);
const markets = await response.json();

const response = await fetch(
  "https://gamma-api.polymarket.com/events?slug=us-presidential-election"
);
const event = await response.json();