Error Handling

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters",
    "details": {
      "field": "prompt",
      "reason": "Required field is missing"
    }
  }
}

async function requestWithRetry(fn, maxRetries = 3) {
  for (let attempt = 0; attempt <= maxRetries; attempt++) {
    try {
      return await fn();
    } catch (error) {
      if (attempt === maxRetries || !isRetryable(error.status)) {
        throw error;
      }
      const delay = Math.min(1000 * Math.pow(2, attempt), 30000);
      await new Promise((resolve) => setTimeout(resolve, delay));
    }
  }
}

function isRetryable(status) {
  return [429, 500, 502, 503].includes(status);
}

if (response.status === 429) {
  const resetTimestamp = response.headers.get("X-RateLimit-Reset");
  const waitMs = parseInt(resetTimestamp, 10) * 1000 - Date.now();
  await new Promise((resolve) => setTimeout(resolve, Math.max(waitMs, 1000)));
}