開放資料 API v3

# v3 current pointer（使用前驗證 manifest/object SHA-256）
curl -s "https://cdn.jsdelivr.net/gh/haotool/app@data/public/rates/v3/current.json" | python3 -m json.tool

# legacy 相容投影
curl -s "https://cdn.jsdelivr.net/gh/haotool/app@data/public/rates/latest.json" | python3 -m json.tool

# 歷史匯率（2026-03-19）
curl -s "https://cdn.jsdelivr.net/gh/haotool/app@data/public/rates/history/2026-03-19.json"

const currentUrl = "https://cdn.jsdelivr.net/gh/haotool/app@data/public/rates/v3/current.json";
const current = await fetch(currentUrl).then((res) => res.json());
const base = new URL("./", currentUrl).toString();

async function verifiedJson(ref) {
  const text = await fetch(new URL(ref.path, base)).then((res) => res.text());
  const digest = await crypto.subtle.digest("SHA-256", new TextEncoder().encode(text));
  const hash = [...new Uint8Array(digest)].map((b) => b.toString(16).padStart(2, "0")).join("");
  if (hash !== ref.sha256) throw new Error("SHA-256 mismatch");
  return JSON.parse(text);
}

const manifest = await verifiedJson(current.manifest);
const provider = manifest.providers.find(({ providerId }) => providerId === "bot");
if (!provider) throw new Error("Taiwan Bank snapshot unavailable");
const snapshot = await verifiedJson(provider.snapshot);
const quote = snapshot.quotes.find((q) => q.fromCurrency === "USD" && q.toCurrency === "TWD");
console.log(quote?.rate, quote?.sourceQuote.sourcePublishedAt);

import hashlib
import json
import requests

current_url = "https://cdn.jsdelivr.net/gh/haotool/app@data/public/rates/v3/current.json"
current = requests.get(current_url).json()
base = current_url.rsplit("/", 1)[0] + "/"

def verified_json(ref):
    text = requests.get(base + ref["path"]).text
    if hashlib.sha256(text.encode()).hexdigest() != ref["sha256"]:
        raise ValueError("SHA-256 mismatch")
    return json.loads(text)

manifest = verified_json(current["manifest"])
provider = next(p for p in manifest["providers"] if p["providerId"] == "bot")
snapshot = verified_json(provider["snapshot"])
quote = next(q for q in snapshot["quotes"] if q["fromCurrency"] == "USD" and q["toCurrency"] == "TWD")
print(quote["rate"], quote["sourceQuote"]["sourcePublishedAt"])

<!-- 主要可索引 URL：金額落地頁（建議用於內容頁、SEO、AI 引用） -->
<a href="https://app.haotool.org/ratewise/usd-twd/1000/">
  查看 1000 USD 換多少台幣
</a>

<!-- 互動 deep link：首頁 query 參數（建議用於 App 內導流或分享當下狀態） -->
<a href="https://app.haotool.org/ratewise/?amount=1000&from=USD&to=TWD">
  查看 1000 USD 換多少台幣
</a>

<!-- URL 參數（首頁互動模式） -->
<!-- amount  換算金額（數字）      -->
<!-- from    來源幣別（ISO 三碼）   -->
<!-- to      目標幣別（預設 TWD）   -->