Micro User Service vs Registrum API
Same instrument, two spec sheets — measured, not claimed.
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 18.6% versus Registrum API at 100% 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, Micro User Service or Registrum API?
Micro User Service has the lower median latency in our checks — Micro User Service responds in 231 ms versus Registrum API at 246 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 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?
Neither sends browser-friendly CORS headers reliably, so call Micro User Service and Registrum API from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.
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.