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MalwareBazaar vs FilterLists

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

APIMalwareBazaarUNMONITORED—FilterListsNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnono
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

MalwareBazaar vs FilterLists: common questions

Which is more reliable, MalwareBazaar or FilterLists?

Only FilterLists is on our probe schedule so far (—% uptime over 90 days). The other is catalogued but not yet live-checked, so we can't compare measured reliability head-to-head — check the uncovered API's own status page for now.

Do MalwareBazaar and FilterLists need an API key?

FilterLists needs no key, while MalwareBazaar requires a free API key. If you want to start calling without signup, reach for FilterLists first.

Can I call MalwareBazaar and FilterLists from the browser?

Neither sends browser-friendly CORS headers reliably, so call MalwareBazaar 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 MalwareBazaar and FilterLists free for commercial use?

MalwareBazaar 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.