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Cisco Spark vs Ntropy Transaction API v1

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

APICisco SparkNEW—Ntropy Transaction API v1NEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesno
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

Cisco Spark vs Ntropy Transaction API v1: common questions

Which is more reliable, Cisco Spark or Ntropy Transaction API v1?

On our scheduled checks, Ntropy Transaction API v1 leads on measured uptime — Cisco Spark at —% versus Ntropy Transaction API v1 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 Cisco Spark and Ntropy Transaction API v1 need an API key?

Ntropy Transaction API v1 needs no key, while Cisco Spark requires a free API key. If you want to start calling without signup, reach for Ntropy Transaction API v1 first.

Can I call Cisco Spark and Ntropy Transaction API v1 from the browser?

Only Cisco Spark is browser-friendly — it returns CORS headers over HTTPS. Ntropy Transaction API v1 needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Cisco Spark and Ntropy Transaction API v1 free for commercial use?

Cisco Spark has unclear commercial terms, and Ntropy Transaction API v1 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.