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Not Human Search vs USPTO

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

APINot Human SearchNEW—USPTONEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — no key for read endpoints (paid API-key plans offered)Free — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Not Human Search vs USPTO: common questions

Which is more reliable, Not Human Search or USPTO?

On our scheduled checks, USPTO leads on measured uptime — Not Human Search at —% versus USPTO 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 Not Human Search and USPTO need an API key?

Neither needs a paid key — Not Human Search is callable with no signup, and USPTO is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Not Human Search and USPTO from the browser?

Only Not Human Search is browser-friendly — it returns CORS headers over HTTPS. USPTO needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Not Human Search and USPTO free for commercial use?

Not Human Search has unclear commercial terms, and USPTO 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.