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API · /cnb-api

Czech National Bank (CNB) FX API

healthy 4,197 Subscribers

Live official Czech foreign-exchange fixing, served straight from the Czech National Bank's open API — no key, nothing cached. The CNB declares one official rate per currency every working day. The rates endpoint returns the whole daily fixing — around 30 world currencies against the koruna (CZK), each with the country, the unit amount it is quoted per and the rate — and accepts a date so you can pull the official fixing for any past working day. The currency endpoint returns one currency's rate, normalised to the koruna value of a single unit, for the latest day or a chosen date — the US dollar fixed around 21 koruna in mid-2026. The convert endpoint turns an amount from any currency into any other, crossed through the koruna at the official fixing, on the latest day or a historical date. The history endpoint returns a currency's official rate over the last several working days. Everything is the central bank's own published fixing, live, nothing stored. This is the Czech koruna FX layer for any forex, payments, e-commerce, accounting or treasury app operating in Czechia and Central Europe — and a clean source of historical FX by date. Distinct from the ECB, Fed, Bank of Canada, Norges Bank, Bank of England, Brazil and Poland central-bank APIs — this is the koruna and the CNB daily fixing, queryable by date. 5 endpoints, no key on our side.

#czech #cnb #central-bank #forex #koruna #czk #exchange-rates #historical-fx
api.oanor.com/cnb-api
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Machine-readable spec so AI agents can integrate this API.

/api/cnb-api/openapi.json
/api/cnb-api/llms.txt

Discovery: GET /api/index.json lists every API.

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
185 ms
Server probes · 24h
Subscribers
4,197
active
Total calls
25
last 7 days
status Full status page → · 10 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 2,000 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 2,000 calls/month
  • 2 req/sec
  • Rates, currency, convert
  • No credit card
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Starter

€9.00 /month

  • 30,000 calls / month
  • 6 requests / second
  • Hard cap (429 above quota, no overage)
  • 30,000 calls/month
  • 6 req/sec
  • Historical FX by date + history
  • Email support
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Pro

€23.00 /month

  • 170,000 calls / month
  • 15 requests / second
  • Hard cap (429 above quota, no overage)
  • 170,000 calls/month
  • 15 req/sec
  • Payments & accounting pipelines
  • Priority support
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Mega

€56.00 /month

  • 900,000 calls / month
  • 40 requests / second
  • Hard cap (429 above quota, no overage)
  • 900,000 calls/month
  • 40 req/sec
  • Platform scale
  • Dedicated SLA
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Live official foreign-exchange reference rates from the National Bank of the Kyrgyz Republic (NBKR), read straight from the bank's published fixing — no key on the data, nothing cached, nothing stored. Get every currency the NBKR fixes against the Kyrgyzstani som (KGS) for the day, each normalized to a clean per-unit rate; look one currency up on its own; pull the separate weekly accounting rates (valid for seven days); or convert any amount between two listed currencies by crossing through the som. The som is the base and rates carry the NBKR fixing date. This is the Kyrgyzstan national-central-bank feed specifically — a distinct official source, separate from the other FX, central-bank and market APIs in the catalogue, so treasury, invoicing, payroll and accounting workflows that need the legally-referenced KGS rate can read it directly.

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Live Chilean economic indicators from mindicador.cl (Banco Central de Chile data). Chile runs on indicators no other currency uses: the UF (Unidad de Fomento) is an inflation-indexed unit that prices mortgages, rents and contracts, and the UTM (Unidad Tributaria Mensual) is the tax unit — both quoted in pesos and updated daily. The feed also carries the observed dollar and euro, the IPC inflation index, the IMACEC activity index, the central bank policy rate (TPM), the copper price (Chile is the world's top copper exporter) and unemployment. The indicators endpoint returns every indicator's latest value; the indicator endpoint returns one with its recent series; the history endpoint returns a full year of daily values; the convert endpoint converts amounts between the peso, UF, UTM, dollar and euro. Read live, nothing stored. This is Chile's own UF/UTM, FX, rate and copper indicator layer — distinct from generic FX feeds.

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Central Bank of Türkiye FX API

Live official exchange-rate data for the Turkish lira (TRY) from the Central Bank of the Republic of Türkiye (TCMB) — straight from its public daily rate XML as clean JSON. Unusually, the TCMB publishes four rates per currency: forex buying, forex selling, banknote buying and banknote selling. Get all of these for every published currency against the lira, for the latest or any past business day, normalised to one unit; pull a single currency's four rates, mid and the inverse; convert an amount between any two published currencies (including TRY) at the forex mid rate; or list the quoted currencies. Read live from the TCMB, nothing cached. This is the official Turkish-lira central-bank rate, with the forex/banknote split few other feeds expose — distinct from the ECB, BCRA, BCRP, NRB and other central-bank feeds and from market mid-rates: the TCMB's own lira rates.

api.oanor.com/tcmb-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Czech National Bank (CNB) FX API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Czech National Bank (CNB) FX API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Czech National Bank (CNB) FX 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 Czech National Bank (CNB) FX API cost?
Czech National Bank (CNB) FX API has a free tier with 100 calls / month. Paid plans start at €9.00 / 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 Czech National Bank (CNB) FX API GDPR-compliant?
All requests to Czech National Bank (CNB) FX 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/cnb-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/cnb-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/cnb-api/SOME_PATH");
curl_setopt($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/cnb-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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