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Catchdoms Security API vs PaperClean

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

APICatchdoms Security APINEW—PaperCleanNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Catchdoms Security API vs PaperClean: common questions

Which is more reliable, Catchdoms Security API or PaperClean?

On our scheduled checks, PaperClean leads on measured uptime — Catchdoms Security API at —% versus PaperClean 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 Catchdoms Security API and PaperClean need an API key?

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

Can I call Catchdoms Security API and PaperClean from the browser?

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

Are Catchdoms Security API and PaperClean free for commercial use?

Catchdoms Security API has unclear commercial terms, and PaperClean 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.