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National Bank of Poland vs Plaid API

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

APINational Bank of PolandNEW—Plaid APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

National Bank of Poland vs Plaid API: common questions

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

On our scheduled checks, Plaid API leads on measured uptime — National Bank of Poland at —% versus Plaid API 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 National Bank of Poland and Plaid API need an API key?

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

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

Yes — both National Bank of Poland and Plaid API send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

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

National Bank of Poland has unclear commercial terms, and Plaid API 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.