One currency buying, selling and middle rate
API · /hnb-api
Croatian National Bank API
healthy
3,047 Subscribers
Live official exchange-rate data from the Croatian National Bank (Hrvatska narodna banka, HNB), the central bank of Croatia, against the euro — uniquely with three rates per currency (buying, selling and middle): the official rate for every published currency, a single currency's buying/selling/middle rate plus the inverse, a currency's official rate on a specific past date, and currency conversion between any two published currencies (including the euro) cross-computed through the euro at HNB middle rates.
api.oanor.com/hnb-api
API health
healthy- Uptime
- 100.00%
- Server probes · 24h
- Avg latency
- 131 ms
- Server probes · 24h
- Subscribers
- 3,047
- active
- Total calls
- 95
- last 7 days
Pricing
Pick a tier — billed monthly, cancel anytime.
Free
Free
- 11,000 calls / month
- 3 requests / second
- Hard cap (429 above quota, no overage)
- 11,000 calls/month
- 3 req/sec
- All endpoints
- No credit card
Basic
€7.00 /month
- 160,000 calls / month
- 8 requests / second
- Hard cap (429 above quota, no overage)
- 160k calls/month
- 8 req/sec
- Email support
Pro
€19.00 /month
- 1,000,000 calls / month
- 15 requests / second
- Hard cap (429 above quota, no overage)
- 1M calls/month
- 15 req/sec
- Priority support
Scale
€48.00 /month
- 5,300,000 calls / month
- 35 requests / second
- Hard cap (429 above quota, no overage)
- 5.3M calls/month
- 35 req/sec
- Dedicated SLA
Built by
Related APIs
Other APIs with overlapping tags.
Croatia Statistics API
Official Croatian statistics from the Croatian Bureau of Statistics (Državni zavod za statistiku, DZS) as a clean, keyless JSON API. Get the latest Croatian consumer price index and inflation — the monthly index (2025 = 100) with both the annual and monthly rate of change — pull any table in the DZS PxWeb catalogue as a tidy time-series (prices, industry, national accounts, energy, construction, environment and more), inspect a table's variables and value codes, and browse the database tree. A thin gateway over the DZS PxWeb API: you supply a table path (segments auto URL-encoded) with optional dimension selection, we return tidy period/value observations. Ideal for inflation trackers, Eurozone and Balkan macro research and economic dashboards.
api.oanor.com/croatia-stats-api
Zagreb Stock Exchange (ZSE) API
Live Croatian equity data from the Zagreb Stock Exchange (ZSE): real-time quotes for any listed stock by ticker (price, % change, intraday OHLC, volume, market cap in EUR), a ranking screener for gainers, losers, most-active and top market-cap local primary listings, and the CROBEX index family (CROBEX, CROBEX Total Return, CROBEX Plus). Foreign depositary receipts are filtered out so you get only genuine Croatian companies such as Zagrebacka banka, INA, Hrvatski Telekom and KONCAR.
api.oanor.com/croatia-stock-api
Euro Short-Term Rate (€STR) API
Live euro short-term rate (€STR) data from the European Central Bank. The €STR is the euro area's overnight risk-free benchmark, computed daily by the ECB from the real unsecured borrowing of euro-area banks; it underpins euro derivatives and floating-rate contracts and is the successor to EONIA and a key reference alongside EURIBOR. The estr endpoint returns the latest rate plus its full daily statistics — the underlying borrowing volume, the number of reporting banks and transactions, the 25th and 75th rate percentiles and the share of the five largest banks. The policy endpoint returns the ECB key-rate corridor (deposit facility, main refinancing operations, marginal lending) and where €STR sits inside it. The history endpoint returns the €STR rate over recent days. Read live from the ECB, nothing stored. This is the euro overnight risk-free rate and ECB policy corridor — distinct from FX reference feeds, bond yield curves and money-market futures.
api.oanor.com/estr-api
European Central Bank API
Live official euro-area monetary data from the ECB Data Portal — no key, nothing cached. This is the money side of the euro, not exchange rates. The key-rates endpoint returns the ECB's three policy interest rates — the deposit facility rate, the main refinancing operations (MRO) rate and the marginal lending facility rate — the rates that set the price of money across the euro area, each with the date it took effect and recent history (deposit facility around 2.00%, MRO 2.15%). The estr endpoint returns €STR, the euro short-term rate, the overnight benchmark that replaced EONIA, with its recent path. The yield-curve endpoint returns the euro-area AAA-rated government bond spot-rate curve across maturities from 3 months to 30 years, with the 10-year-minus-1-year slope. Everything is the ECB's own published series. This is the euro-rates layer for any fixed-income, macro, forex or research app that needs authoritative European central-bank numbers. Live from the ECB, nothing stored. Distinct from exchange-rate APIs and from the Bank of Canada and US-Treasury APIs — this is the ECB's policy rates, €STR and euro yield curve. 4 endpoints.
api.oanor.com/ecb-api
Frequently asked questions
Quick answers about pricing, quotas, and integration.
How do I get an API key for Croatian National Bank API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Croatian National Bank API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Croatian National Bank API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does Croatian National Bank API cost?
Croatian National Bank API has a free tier with 100 calls / month. Paid plans start at €7.00 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is Croatian National Bank API GDPR-compliant?
All requests to Croatian National Bank API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.
Pick an endpoint from the list on the left to see its details and try it.
Code snippets
Sign up to get an API key, then call any path under your slug.
curl https://api.oanor.com/hnb-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."const res = await fetch("https://api.oanor.com/hnb-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();$ch = curl_init("https://api.oanor.com/hnb-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);import requests
r = requests.get(
"https://api.oanor.com/hnb-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())Ratings
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