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Stoplight Elements API Docs vs User Agent Lookup API

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

APIStoplight Elements API DocsNEW—User Agent Lookup APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Stoplight Elements API Docs vs User Agent Lookup API: common questions

Which is more reliable, Stoplight Elements API Docs or User Agent Lookup API?

On our scheduled checks, User Agent Lookup API leads on measured uptime — Stoplight Elements API Docs 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 Stoplight Elements API Docs and User Agent Lookup API need an API key?

Neither needs a paid key — Stoplight Elements API Docs is callable with no signup, and User Agent Lookup API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Stoplight Elements API Docs and User Agent Lookup API from the browser?

Only Stoplight Elements API Docs 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 Stoplight Elements API Docs and User Agent Lookup API free for commercial use?

Stoplight Elements API Docs 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.