Rate limits

X-RateLimit-Limit: 300
X-RateLimit-Remaining: 287
X-RateLimit-Reset: 1729684260
X-RateLimit-Category: read

HTTP/1.1 429 Too Many Requests
Retry-After: 37
Content-Type: application/problem+json

{
  "type": "https://api.novatrade24.com/problems/rate-limited",
  "title": "Rate Limit Exceeded",
  "status": 429,
  "detail": "60 requests per minute for write category exceeded.",
  "traceId": "req_..."
}

async function callWithBackoff(req: RequestInit, url: string, maxAttempts = 5) {
  for (let attempt = 0; attempt < maxAttempts; attempt++) {
    const r = await fetch(url, req);
    if (r.status !== 429) return r;

    const retryAfter = parseInt(r.headers.get('Retry-After') ?? '1', 10);
    const jitter = Math.random() * 500;
    await new Promise((res) => setTimeout(res, retryAfter * 1000 + jitter));
  }
  throw new Error('Rate limit exceeded after retries');
}