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Abstract API vs SampleAPIs

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

APIAbstract APINEW—SampleAPIsNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key may be required for productionFree — limits not published
Rate limitUnpublished5000 req/window · 3876 remaining · resets 1783516346
In directory since2026-07-052026-07-05
operationalpartialdownno data

Abstract API vs SampleAPIs: common questions

Which is more reliable, Abstract API or SampleAPIs?

On our scheduled checks, SampleAPIs leads on measured uptime — Abstract API at —% versus SampleAPIs 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 Abstract API and SampleAPIs need an API key?

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

Can I call Abstract API and SampleAPIs from the browser?

Yes — both Abstract API and SampleAPIs 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 Abstract API and SampleAPIs free for commercial use?

Abstract API has unclear commercial terms, and SampleAPIs 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.