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ReqRes vs Sheetsu

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

APIReqResNEW—SheetsuNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — key may be required
Rate limitUnpublished90 req/window · 89 remaining
In directory since2026-07-052026-07-05
operationalpartialdownno data

ReqRes vs Sheetsu: common questions

Which is more reliable, ReqRes or Sheetsu?

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

ReqRes needs no key, while Sheetsu requires a free API key. If you want to start calling without signup, reach for ReqRes first.

Can I call ReqRes and Sheetsu from the browser?

Only Sheetsu 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 ReqRes and Sheetsu free for commercial use?

ReqRes has unclear commercial terms, and Sheetsu 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.