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Render API vs SLA Uptime Calculator

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

APIRender APINEW—SLA Uptime CalculatorNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
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

Render API vs SLA Uptime Calculator: common questions

Which is more reliable, Render API or SLA Uptime Calculator?

On our scheduled checks, SLA Uptime Calculator leads on measured uptime — Render API at —% versus SLA Uptime Calculator 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 Render API and SLA Uptime Calculator need an API key?

SLA Uptime Calculator needs no key, while Render API requires a free API key. If you want to start calling without signup, reach for SLA Uptime Calculator first.

Can I call Render API and SLA Uptime Calculator from the browser?

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

Are Render API and SLA Uptime Calculator free for commercial use?

Render API has unclear commercial terms, and SLA Uptime Calculator 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.