Function checkMessageRateLimit

src/windsurf-api.js:426–455

(apiKey, proxy = null)

 * @returns {Promise<{hasCapacity: boolean, messagesRemaining: number, maxMessages: number}>}
 */
export async function checkMessageRateLimit(apiKey, proxy = null) {
  const body = { metadata: buildMetadata(apiKey) };

  const proxyModes = proxy ? [proxy, null] : [null];
  let lastErr = null;
  for (const px of proxyModes) {
    for (const host of SERVER_HOSTS) {
      try {
        const res = await postJson(host, RATE_LIMIT_PATH, body, px);
        if (res.status >= 400) {
          lastErr = new Error(`CheckRateLimit ${host} → ${res.status}: ${res.raw.slice(0, 160)}`);
          continue;
        }
        return {
          hasCapacity: res.data.hasCapacity !== false,
          messagesRemaining: res.data.messagesRemaining ?? -1,
          maxMessages: res.data.maxMessages ?? -1,
          retryAfterMs: Number.isFinite(res.data.retryAfterMs) ? res.data.retryAfterMs : null,
        };
      } catch (e) {
        lastErr = e;
        log.debug(`CheckRateLimit host ${host} failed: ${e.message}`);
        if (px && isProxyError(e)) break;
      }
    }
  }
  // On failure, assume capacity so we don't block requests.
  log.warn(`CheckRateLimit failed: ${lastErr?.message}`);
  return { hasCapacity: true, messagesRemaining: -1, maxMessages: -1, retryAfterMs: null };
}