SERP APIのエラー: コード、原因、修正、リトライ

{
  "error": {
    "code": "insufficient_credits",
    "message": "Your account has no search credits left."
  }
}

import os
import random
import time

import requests

API_URL = "https://serpcrypto.com/api/v1/search"
RETRYABLE = {429, 502, 504}


def search(params, max_attempts=5):
    headers = {"Authorization": "Bearer " + os.environ["SERPCRYPTO_API_KEY"]}
    for attempt in range(1, max_attempts + 1):
        r = requests.get(API_URL, params=params, headers=headers, timeout=90)
        if r.status_code == 200:
            return r.json()
        error = r.json().get("error", {})
        if r.status_code not in RETRYABLE or attempt == max_attempts:
            raise RuntimeError(f"{r.status_code} {error.get('code')}: {error.get('message')}")
        # exponential backoff with jitter: about 1 s, 2 s, 4 s, 8 s
        time.sleep(2 ** (attempt - 1) + random.random())
    raise RuntimeError("unreachable")


print(search({"q": "solar panel installers", "gl": "au", "hl": "en"})["search_metadata"])

// retry.mjs — Node.js 18+
const API_URL = "https://serpcrypto.com/api/v1/search";
const RETRYABLE = new Set([429, 502, 504]);
const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));

export async function search(params, maxAttempts = 5) {
  const url = `${API_URL}?${new URLSearchParams(params)}`;
  const headers = { Authorization: `Bearer ${process.env.SERPCRYPTO_API_KEY}` };
  for (let attempt = 1; attempt <= maxAttempts; attempt++) {
    const res = await fetch(url, { headers });
    if (res.ok) return res.json();
    const body = await res.json().catch(() => ({}));
    const code = body.error?.code ?? "unknown";
    if (!RETRYABLE.has(res.status) || attempt === maxAttempts) {
      throw new Error(`${res.status} ${code}: ${body.error?.message ?? ""}`);
    }
    // exponential backoff with jitter: about 1 s, 2 s, 4 s, 8 s
    await sleep(1000 * 2 ** (attempt - 1) + Math.random() * 1000);
  }
  throw new Error("unreachable");
}

console.log((await search({ q: "solar panel installers", gl: "au", hl: "en" })).search_metadata);