shipapis
StarSubmit an APISubmit API

Micro User Service vs Registrum API

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

APIMicro User ServiceNEW—Registrum APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Micro User Service vs Registrum API: common questions

Which is more reliable, Micro User Service or Registrum API?

On our scheduled checks, Registrum API leads on measured uptime — Micro User Service at —% versus Registrum 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 Micro User Service and Registrum API need an API key?

Both ask you to authenticate — Micro User Service uses an API key and Registrum API uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

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

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

Are Micro User Service and Registrum API free for commercial use?

Micro User Service has unclear commercial terms, and Registrum 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.