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Satellite Passes vs TensorFeed

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

APISatellite PassesUNMONITORED—TensorFeedNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — no key (static JSON feed endpoints)
Rate limitUnpublished120 req/window · 119 remaining · resets 60
In directory since2026-07-052026-07-05
operationalpartialdownno data

Satellite Passes vs TensorFeed: common questions

Which is more reliable, Satellite Passes or TensorFeed?

Only TensorFeed 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 Satellite Passes and TensorFeed need an API key?

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

Can I call Satellite Passes and TensorFeed from the browser?

Yes — both Satellite Passes and TensorFeed send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Satellite Passes and TensorFeed free for commercial use?

Satellite Passes has unclear commercial terms, and TensorFeed 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.