exrate API — gratis JSON med nationalbankernes kurser

Endpoints

Examples

curl

curl -s "https://api.banks-rates.com/v1/rate?bank=NBP&date=2026-04-20&from=USD&to=PLN&amount=100"

Python

import requests
r = requests.get("https://api.banks-rates.com/v1/rate", params={
    "bank": "NBP", "date": "2026-04-20",
    "from": "USD", "to": "PLN", "amount": 100,
})
r.raise_for_status()
print(r.json())

JavaScript / TypeScript

const url = new URL("https://api.banks-rates.com/v1/rate");
url.searchParams.set("bank", "NBP");
url.searchParams.set("date", "2026-04-20");
url.searchParams.set("from", "USD");
url.searchParams.set("to", "PLN");
url.searchParams.set("amount", "100");
const res = await fetch(url);
const data = await res.json();

Go

req, _ := http.NewRequest("GET", "https://api.banks-rates.com/v1/rate", nil)
q := req.URL.Query()
q.Set("bank", "NBP"); q.Set("date", "2026-04-20")
q.Set("from", "USD"); q.Set("to", "PLN"); q.Set("amount", "100")
req.URL.RawQuery = q.Encode()
res, _ := http.DefaultClient.Do(req)

Authentication & rate limits

The API works without authentication at the free per-IP limits (12 requests/hour, 256/day). For higher limits (16/min, 800/hour, 16,000/day), issue an API key in the console and send it as a bearer token:

curl -s "https://api.banks-rates.com/v1/rate?bank=NBP&date=2026-04-20&from=USD&to=PLN&amount=100" \
  -H "Authorization: Bearer brk_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"

Every response carries X-RateLimit-Limit, X-RateLimit-Remaining and X-RateLimit-Reset. Exceeding a limit returns 429 with a Retry-After header and a JSON body { "error": "rate_limited", "scope": "hour", "limit": 12 }. Schema and docs endpoints (e.g. /v1/openapi.json) have a separate flat 5 req/sec per-IP limit.

Hvorfor exrate API i stedet for at gå direkte til hver centralbanks feed?

• One unified JSON shape across every supported central bank — no per-bank parser needed.
• Built-in previous-business-day fallback for invoicing and tax filings.
• Hosted on Cloudflare's edge — sub-100ms response globally.
• No XML parsing, no CSV mangling, no scraping. JSON, every endpoint.
• Free for commercial use — no key required; add one only to raise rate limits.

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