Historical Price Ticks

const apiKey = "YOUR_API_KEY";
const symbol = "BTC";
const now = Date.now();
const windowStart = Math.floor(now / 1000 / 900) * 900 * 1000;

const url = new URL("https://api.polynode.dev/v1/crypto/ticks");
url.searchParams.set("symbol", symbol);
url.searchParams.set("from", String(windowStart));
url.searchParams.set("to", String(now));
url.searchParams.set("limit", "2000");

const response = await fetch(url, {
  headers: { "x-api-key": apiKey }
});
const history = await response.json();

const points = history.ticks.map((tick) => ({
  t: tick.timestamp_ms,
  price: tick.data.price
}));

console.log(points.at(0), points.at(-1));

const ws = new WebSocket("wss://ws.polynode.dev/ws?key=YOUR_API_KEY");

ws.addEventListener("open", () => {
  ws.send(JSON.stringify({
    action: "subscribe",
    type: "chainlink",
    filters: { feeds: ["BTC/USD"] }
  }));
});

ws.addEventListener("message", (event) => {
  const msg = JSON.parse(event.data);
  if (msg.type !== "price_feed") return;

  const point = {
    t: msg.data.timestamp * 1000,
    price: msg.data.price
  };
  console.log(point);
});