Limits & Errors

url="https://api.beliefsystems.xyz/v1/indices/CONFLICT/latest"

for attempt in 1 2 3; do
  body=$(curl -s -D /tmp/belief-headers -H "Authorization: Bearer $BELIEF_API_KEY" "$url")
  status=$(awk 'NR==1 {print $2}' /tmp/belief-headers)

  if [ "$status" != "429" ]; then
    echo "$body" | jq '.data'
    break
  fi

  sleep "$(grep -i '^retry-after:' /tmp/belief-headers | tr -dc '0-9')"
done

import os
import time

import requests

HEADERS = {"Authorization": f"Bearer {os.environ['BELIEF_API_KEY']}"}


def get_with_backoff(url, attempts=3):
    for _ in range(attempts):
        resp = requests.get(url, headers=HEADERS, timeout=10)
        if resp.status_code != 429:
            resp.raise_for_status()
            return resp.json()["data"]
        time.sleep(int(resp.headers.get("Retry-After", 60)))
    raise RuntimeError("Rate limited on every attempt")


print(get_with_backoff("https://api.beliefsystems.xyz/v1/indices/CONFLICT/latest"))

async function getWithBackoff(url, attempts = 3) {
  for (let attempt = 0; attempt < attempts; attempt++) {
    const res = await fetch(url, {
      headers: { Authorization: `Bearer ${process.env.BELIEF_API_KEY}` },
    });

    if (res.status !== 429) {
      if (!res.ok) throw new Error(`Belief Systems API ${res.status}`);
      const { data } = await res.json();
      return data;
    }

    const wait = Number(res.headers.get("Retry-After") ?? 60);
    await new Promise((resolve) => setTimeout(resolve, wait * 1000));
  }
  throw new Error("Rate limited on every attempt");
}

console.log(await getWithBackoff("https://api.beliefsystems.xyz/v1/indices/CONFLICT/latest"));