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Global Shark Attack API vs ReqRes

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

APIGlobal Shark Attack APINEW—ReqResNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
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

Global Shark Attack API vs ReqRes: common questions

Which is more reliable, Global Shark Attack API or ReqRes?

On our scheduled checks, ReqRes leads on measured uptime — Global Shark Attack API at —% versus ReqRes 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 Global Shark Attack API and ReqRes need an API key?

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

Can I call Global Shark Attack API and ReqRes from the browser?

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

Are Global Shark Attack API and ReqRes free for commercial use?

Global Shark Attack API has unclear commercial terms, and ReqRes 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.