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Passantenfrequenzen Zürich vs User Agent Lookup API

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

APIPassantenfrequenzen ZürichHEALTHY92User Agent Lookup APIHEALTHY96
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms569426
P95 · ms1228764
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

Passantenfrequenzen Zürich vs User Agent Lookup API: common questions

Which is more reliable, Passantenfrequenzen Zürich or User Agent Lookup API?

Both are neck-and-neck — Passantenfrequenzen Zürich and User Agent Lookup API each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Passantenfrequenzen Zürich or User Agent Lookup API?

User Agent Lookup API has the lower median latency in our checks — Passantenfrequenzen Zürich responds in 569 ms versus User Agent Lookup API at 426 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Passantenfrequenzen Zürich and User Agent Lookup API need an API key?

Neither needs a paid key — Passantenfrequenzen Zürich 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 Passantenfrequenzen Zürich and User Agent Lookup API from the browser?

Only Passantenfrequenzen Zürich 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 Passantenfrequenzen Zürich and User Agent Lookup API free for commercial use?

Passantenfrequenzen Zürich 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.