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Mockaroo vs User Agent Lookup API

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

APIMockarooREACHABLE100User Agent Lookup APIHEALTHY96
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms529426
P95 · ms2039764
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

Mockaroo vs User Agent Lookup API: common questions

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

Both are neck-and-neck — Mockaroo 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, Mockaroo or User Agent Lookup API?

User Agent Lookup API has the lower median latency in our checks — Mockaroo responds in 529 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 Mockaroo and User Agent Lookup API need an API key?

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

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

Only Mockaroo 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 Mockaroo and User Agent Lookup API free for commercial use?

Mockaroo 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.