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GLEIF LEI API vs Micro User Service

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

APIGLEIF LEI APIHEALTHY65Micro User ServiceDEAD0
Uptime · 30d
Uptime · 90d100%18.6%
Uptime · 30d100%0.0%
P50 · ms1052231
P95 · ms2472827
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

GLEIF LEI API vs Micro User Service: common questions

Which is more reliable, GLEIF LEI API or Micro User Service?

On our scheduled checks, GLEIF LEI API leads on measured uptime — GLEIF LEI API at 100% versus Micro User Service at 18.6% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, GLEIF LEI API or Micro User Service?

Micro User Service has the lower median latency in our checks — GLEIF LEI API responds in 1052 ms versus Micro User Service at 231 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 Micro User Service need an API key?

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

Can I call GLEIF LEI API and Micro User Service from the browser?

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

Are GLEIF LEI API and Micro User Service free for commercial use?

GLEIF LEI API has unclear commercial terms, and Micro User Service 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.