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Random Profiles vs serpstack

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

APIRandom ProfilesNEW—serpstackNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Random Profiles vs serpstack: common questions

Which is more reliable, Random Profiles or serpstack?

On our scheduled checks, serpstack leads on measured uptime — Random Profiles at —% versus serpstack 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 Random Profiles and serpstack need an API key?

Both ask you to authenticate — Random Profiles uses an API key and serpstack uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call Random Profiles and serpstack from the browser?

Only Random Profiles is browser-friendly — it returns CORS headers over HTTPS. serpstack needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Random Profiles and serpstack free for commercial use?

Random Profiles has unclear commercial terms, and serpstack 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.