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Cutt.ly vs ReqRes

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

APICutt.lyNEW—ReqResNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Cutt.ly vs ReqRes: common questions

Which is more reliable, Cutt.ly or ReqRes?

On our scheduled checks, ReqRes leads on measured uptime — Cutt.ly 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 Cutt.ly and ReqRes need an API key?

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

Can I call Cutt.ly and ReqRes from the browser?

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

Are Cutt.ly and ReqRes free for commercial use?

Cutt.ly 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.