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Fixer API vs GLEIF LEI API

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

APIFixer APINEW—GLEIF LEI APINEW—
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 GLEIF LEI API: common questions

Which is more reliable, Fixer API or GLEIF LEI API?

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

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

Can I call Fixer API and GLEIF LEI API from the browser?

Only GLEIF LEI API 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 GLEIF LEI API free for commercial use?

Fixer API has unclear commercial terms, and GLEIF LEI 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.