GLEIF LEI API vs UUID Generator API

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

Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms1052737
P95 · ms24721570
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

GLEIF LEI API vs UUID Generator API: common questions

Which is more reliable, GLEIF LEI API or UUID Generator API?

Both are neck-and-neck — GLEIF LEI API and UUID Generator API each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, GLEIF LEI API or UUID Generator API?

UUID Generator API has the lower median latency in our checks — GLEIF LEI API responds in 1052 ms versus UUID Generator API at 737 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do GLEIF LEI API and UUID Generator API need an API key?

Neither needs a paid key — GLEIF LEI API is callable with no signup, and UUID Generator API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call GLEIF LEI API and UUID Generator API from the browser?

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

Are GLEIF LEI API and UUID Generator API free for commercial use?

GLEIF LEI API has unclear commercial terms, and UUID Generator 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.