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Banking API vs National Bank of Poland

Same instrument, two spec sheets — measured, not claimed.

APIBanking APINEW—National Bank of PolandNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Banking API vs National Bank of Poland: common questions

Which is more reliable, Banking API or National Bank of Poland?

On our scheduled checks, National Bank of Poland leads on measured uptime — Banking API at —% versus National Bank of Poland at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Banking API and National Bank of Poland need an API key?

National Bank of Poland needs no key, while Banking API requires a free API key. If you want to start calling without signup, reach for National Bank of Poland first.

Can I call Banking API and National Bank of Poland from the browser?

Only National Bank of Poland is browser-friendly — it returns CORS headers over HTTPS. Banking API needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Banking API and National Bank of Poland free for commercial use?

Banking API has unclear commercial terms, and National Bank of Poland has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.