shipapis
StarSubmit an APISubmit API

Microsoft Security Response Center (MSRC) vs FilterLists

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

APIMicrosoft Security Response Center (MSRC)NEW—FilterListsNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — no key requiredFree — no key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Microsoft Security Response Center (MSRC) vs FilterLists: common questions

Which is more reliable, Microsoft Security Response Center (MSRC) or FilterLists?

On our scheduled checks, FilterLists leads on measured uptime — Microsoft Security Response Center (MSRC) at —% versus FilterLists 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 Microsoft Security Response Center (MSRC) and FilterLists need an API key?

Neither needs a paid key — Microsoft Security Response Center (MSRC) is callable with no signup, and FilterLists is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Microsoft Security Response Center (MSRC) and FilterLists from the browser?

Neither sends browser-friendly CORS headers reliably, so call Microsoft Security Response Center (MSRC) and FilterLists from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Microsoft Security Response Center (MSRC) and FilterLists free for commercial use?

Microsoft Security Response Center (MSRC) has unclear commercial terms, and FilterLists 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.