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Sheet2API vs User Agent Lookup API

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

APISheet2APINEW—User Agent Lookup APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Sheet2API vs User Agent Lookup API: common questions

Which is more reliable, Sheet2API or User Agent Lookup API?

On our scheduled checks, User Agent Lookup API leads on measured uptime — Sheet2API at —% versus User Agent Lookup API 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 Sheet2API and User Agent Lookup API need an API key?

User Agent Lookup API needs no key, while Sheet2API requires a free API key. If you want to start calling without signup, reach for User Agent Lookup API first.

Can I call Sheet2API and User Agent Lookup API from the browser?

Only Sheet2API is browser-friendly — it returns CORS headers over HTTPS. User Agent Lookup API needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Sheet2API and User Agent Lookup API free for commercial use?

Sheet2API has unclear commercial terms, and User Agent Lookup API 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.