Heartbeat

const beat = async () => {
  const res = await fetch(`${API}/heartbeat/v3`, {
    method: "POST",
    headers: { ...auth, "content-type": "application/json" },
    body: JSON.stringify({ timeoutSeconds: 60 }),
  });
  if (!res.ok) throw new Error(`heartbeat failed: HTTP ${res.status}`);
  return (await res.json()).data.expiresAt;   // 2026-08-06T14:31:07.482Z
};

await beat();
setInterval(() => beat().catch(console.error), 20_000);

def beat():
    res = requests.post(f"{API}/heartbeat/v3", headers=auth, json={"timeoutSeconds": 60})
    res.raise_for_status()
    return res.json()["data"]["expiresAt"]   # 2026-08-06T14:31:07.482Z