Reintentos sin doble cargo

{
  "id": "5b0214ae-9e39-460a-820a-f6ae3e24400b",
  "status": "queued",
  "task_id": "5b0214ae-9e39-460a-820a-f6ae3e24400b",
  "cost": 0.04
}

# Hacen falta bash, curl y uuidgen. La clave se crea una sola vez por operación.
IDEMPOTENCY_KEY="$(uuidgen)" || exit 1
curl --fail-with-body --max-time 30 \
  -X POST https://api.rendergrid.io/api/public/v1/images/generate \
  -H "Authorization: Bearer $RENDERGRID_API_KEY" \
  -H "Content-Type: application/json" \
  -H "X-Idempotency-Key: $IDEMPOTENCY_KEY" \
  -d '{
    "model": "nano-banana-pro",
    "prompt": "Taza de cerámica sobre mármol, luz suave de ventana"
  }'

import os
import random
import time
import requests

API = "https://api.rendergrid.io/api/public/v1"
KEY = os.environ["RENDERGRID_API_KEY"]


def submit(
    payload: dict, operation_key: str, max_attempts: int = 3
) -> dict:
    headers = {
        "Authorization": f"Bearer {KEY}",
        "X-Idempotency-Key": operation_key,
    }
    for attempt in range(max_attempts):
        last = attempt + 1 == max_attempts
        delay = 2 ** (attempt + 1) + random.random()
        try:
            resp = requests.post(
                f"{API}/images/generate",
                headers=headers, json=payload, timeout=(5, 30),
            )
        except (requests.Timeout, requests.ConnectionError):
            if last:
                raise
        else:
            if resp.status_code == 202:
                return resp.json()
            try:
                details = resp.json()["error"].get("details") or {}
            except (ValueError, KeyError, AttributeError):
                details = {}
            retryable = (
                resp.status_code == 429
                or resp.status_code >= 500
                or details.get("retryable") is True
            )
            blocked = details.get("reason") == "burst_block"
            if blocked or not retryable or last:
                raise RuntimeError(resp.status_code, resp.text)
            wait = resp.headers.get("Retry-After", "")
            if wait.isascii() and wait.isdigit():
                delay = max(delay, int(wait))
        time.sleep(delay)


payload = {
    "model": "nano-banana-pro",
    "prompt": "Taza de cerámica sobre mármol, luz suave de ventana",
}
creation = submit(payload, operation_key="order-8412-cover-v1")
print(creation["id"])

// Node.js 22+, archivo .mjs
const API = "https://api.rendergrid.io/api/public/v1";
const KEY = process.env.RENDERGRID_API_KEY;
const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));

async function submit(payload, operationKey, maxAttempts = 3) {
  const body = JSON.stringify(payload);
  for (let attempt = 0; attempt < maxAttempts; attempt++) {
    const last = attempt + 1 === maxAttempts;
    let delay = (2 ** (attempt + 1) + Math.random()) * 1_000;
    let resp;
    try {
      resp = await fetch(`${API}/images/generate`, {
        method: "POST",
        headers: {
          Authorization: `Bearer ${KEY}`,
          "Content-Type": "application/json",
          "X-Idempotency-Key": operationKey,
        },
        body,
        signal: AbortSignal.timeout(30_000),
      });
    } catch (error) {
      const network = error instanceof TypeError;
      if (!network && error.name !== "TimeoutError") throw error;
      if (last) throw error;
    }
    if (resp) {
      if (resp.status === 202) return resp.json();
      const text = await resp.text();
      let details;
      try {
        details = JSON.parse(text)?.error?.details;
      } catch {
        details = undefined;
      }
      const retryable = resp.status === 429 || resp.status >= 500 || details?.retryable === true;
      const blocked = details?.reason === "burst_block";
      if (blocked || !retryable || last) {
        throw new Error(`HTTP ${resp.status}: ${text}`);
      }
      const wait = resp.headers.get("Retry-After");
      if (wait && /^[0-9]+$/.test(wait)) {
        delay = Math.max(delay, Number(wait) * 1_000);
      }
    }
    await sleep(delay);
  }
}

const payload = {
  model: "nano-banana-pro",
  prompt: "Taza de cerámica sobre mármol, luz suave de ventana",
};
const creation = await submit(payload, "order-8412-cover-v1");
console.log(creation.id);