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Banking API vs National Bank of Poland

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

APIBanking APIHEALTHY98National Bank of PolandHEALTHY88
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms203899
P95 · ms14352087
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?

Both are neck-and-neck — Banking API and National Bank of Poland each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Banking API or National Bank of Poland?

Banking API has the lower median latency in our checks — Banking API responds in 203 ms versus National Bank of Poland at 899 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

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.