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Setup Gear Guide API vs Userstack

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

APISetup Gear Guide APIHEALTHY99UserstackHEALTHY93
Uptime · 30d
Uptime · 90d100%99.02%
Uptime · 30d100%98.3%
P50 · ms150443
P95 · ms5213029
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Setup Gear Guide API vs Userstack: common questions

Which is more reliable, Setup Gear Guide API or Userstack?

On our scheduled checks, Setup Gear Guide API leads on measured uptime — Setup Gear Guide API at 100% versus Userstack at 99.02% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Setup Gear Guide API or Userstack?

Setup Gear Guide API has the lower median latency in our checks — Setup Gear Guide API responds in 150 ms versus Userstack at 443 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 Setup Gear Guide API and Userstack need an API key?

Setup Gear Guide API needs no key, while Userstack requires a free API key. If you want to start calling without signup, reach for Setup Gear Guide API first.

Can I call Setup Gear Guide API and Userstack from the browser?

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

Are Setup Gear Guide API and Userstack free for commercial use?

Setup Gear Guide API has unclear commercial terms, and Userstack 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.