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DownStatus vs httpSMS

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

APIDownStatusDYING73httpSMSDEAD0
Uptime · 30d
Uptime · 90d60.8%0.0%
Uptime · 30d33.3%0.0%
P50 · ms589—
P95 · ms1295—
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — no API key (per docs)Free tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

DownStatus vs httpSMS: common questions

Which is more reliable, DownStatus or httpSMS?

On our scheduled checks, DownStatus leads on measured uptime — DownStatus at 60.8% versus httpSMS at 0.0% 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 DownStatus and httpSMS need an API key?

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

Can I call DownStatus and httpSMS from the browser?

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

Are DownStatus and httpSMS free for commercial use?

DownStatus has unclear commercial terms, and httpSMS 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.