Complete Criminal Checks vs Microsoft Security Response Center (MSRC)

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

Uptime · 30d
Uptime · 90d0.0%100%
Uptime · 30d0.0%100%
P50 · ms538
P95 · ms1107
AuthapiKeynone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — no key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Complete Criminal Checks vs Microsoft Security Response Center (MSRC): common questions

Which is more reliable, Complete Criminal Checks or Microsoft Security Response Center (MSRC)?

On our scheduled checks, Microsoft Security Response Center (MSRC) leads on measured uptime — Complete Criminal Checks at 0.0% versus Microsoft Security Response Center (MSRC) 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.

Do Complete Criminal Checks and Microsoft Security Response Center (MSRC) need an API key?

Microsoft Security Response Center (MSRC) needs no key, while Complete Criminal Checks requires a free API key. If you want to start calling without signup, reach for Microsoft Security Response Center (MSRC) first.

Can I call Complete Criminal Checks and Microsoft Security Response Center (MSRC) from the browser?

Only Complete Criminal Checks is browser-friendly — it returns CORS headers over HTTPS. Microsoft Security Response Center (MSRC) needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Complete Criminal Checks and Microsoft Security Response Center (MSRC) free for commercial use?

Complete Criminal Checks has unclear commercial terms, and Microsoft Security Response Center (MSRC) 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.