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Bootprint vs Open Notify

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

APIBootprintUNMONITORED—Open NotifyDYING—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedn/a
Free tierFree — limits not publishedUnlimited (volunteer-run)
Rate limitUnpublishedPlease be gentle
In directory since2026-07-052026-05-02
operationalpartialdownno data

Bootprint vs Open Notify: common questions

Which is more reliable, Bootprint or Open Notify?

Only Open Notify is on our probe schedule so far (—% uptime over 90 days). The other is catalogued but not yet live-checked, so we can't compare measured reliability head-to-head — check the uncovered API's own status page for now.

Do Bootprint and Open Notify need an API key?

Neither needs a paid key — Bootprint is callable with no signup, and Open Notify is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Bootprint and Open Notify from the browser?

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

Are Bootprint and Open Notify free for commercial use?

Bootprint has unclear commercial terms, and Open Notify 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.