shipapis
StarSubmit an APISubmit API

Exchangerate.dev vs National Bank of Poland

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

APIExchangerate.devNEW—National Bank of PolandNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limit12 req/window · 11 remaining · resets 1783515720Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Exchangerate.dev vs National Bank of Poland: common questions

Which is more reliable, Exchangerate.dev or National Bank of Poland?

On our scheduled checks, National Bank of Poland leads on measured uptime — Exchangerate.dev 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 Exchangerate.dev and National Bank of Poland need an API key?

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

Can I call Exchangerate.dev and National Bank of Poland from the browser?

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

Are Exchangerate.dev and National Bank of Poland free for commercial use?

Exchangerate.dev 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.