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Fixer API vs University of Oslo

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

APIFixer APINEW—University of OsloNEW—
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

Fixer API vs University of Oslo: common questions

Which is more reliable, Fixer API or University of Oslo?

On our scheduled checks, University of Oslo leads on measured uptime — Fixer API at —% versus University of Oslo 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 Fixer API and University of Oslo need an API key?

University of Oslo needs no key, while Fixer API requires a free API key. If you want to start calling without signup, reach for University of Oslo first.

Can I call Fixer API and University of Oslo from the browser?

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

Are Fixer API and University of Oslo free for commercial use?

Fixer API has unclear commercial terms, and University of Oslo 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.