Отправляйте запросы чата, совместимые с OpenAI, с понятным контролем.

const response = await fetch("https://unlimitedcodex.com/v1/chat/completions", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.UCX_API_KEY}`,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    model: "gpt-5.5",
    messages: [
      { role: "system", content: "You write concise operational summaries." },
      { role: "user", content: "Summarize the release checklist in three bullets." }
    ],
    temperature: 0.2,
    max_tokens: 180
  })
});

const body = await response.json();

if (!response.ok) {
  throw new Error(body.error?.code ?? "chat_request_failed");
}

console.log(body.choices[0].message.content);
console.log(body.usage);

async function runWithChatRetries(runRequest) {
  for (let attempt = 0; attempt < 3; attempt += 1) {
    const response = await runRequest();

    if (response.ok) {
      return response;
    }

    const body = await response.clone().json().catch(() => ({}));
    const code = body.error?.code;
    const retryable =
      [408, 500, 502, 503, 504].includes(response.status) ||
      (response.status === 429 && code === "rate_limit_exceeded");

    if (!retryable) {
      return response;
    }

    const retryAfter = Number(response.headers.get("retry-after") ?? 0);
    const backoffMs = retryAfter > 0 ? retryAfter * 1000 : 500 * 2 ** attempt;
    const jitterMs = Math.floor(Math.random() * 150);

    await new Promise((resolve) => setTimeout(resolve, backoffMs + jitterMs));
  }

  return runRequest();
}