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National Bank of Poland vs ValueRay

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

APINational Bank of PolandNEW—ValueRayNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublished50 req/window · 49 remaining
In directory since2026-07-052026-07-05
operationalpartialdownno data

National Bank of Poland vs ValueRay: common questions

Which is more reliable, National Bank of Poland or ValueRay?

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

Neither needs a paid key — National Bank of Poland is callable with no signup, and ValueRay is callable with no signup. Both are quick to prototype with; rate limits still apply.

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

Yes — both National Bank of Poland and ValueRay 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 ValueRay free for commercial use?

National Bank of Poland has unclear commercial terms, and ValueRay 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.