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CheapShark API vs OkSurf

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

APICheapShark APINEW—OkSurfNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnono
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

CheapShark API vs OkSurf: common questions

Which is more reliable, CheapShark API or OkSurf?

On our scheduled checks, OkSurf leads on measured uptime — CheapShark API at —% versus OkSurf 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 CheapShark API and OkSurf need an API key?

Neither needs a paid key — CheapShark API is callable with no signup, and OkSurf is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call CheapShark API and OkSurf from the browser?

Neither sends browser-friendly CORS headers reliably, so call CheapShark API and OkSurf from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are CheapShark API and OkSurf free for commercial use?

CheapShark API has unclear commercial terms, and OkSurf 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.