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eNanoMapper database vs RSQ API

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

APIeNanoMapper databaseNEW—RSQ APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

eNanoMapper database vs RSQ API: common questions

Which is more reliable, eNanoMapper database or RSQ API?

On our scheduled checks, RSQ API leads on measured uptime — eNanoMapper database at —% versus RSQ API 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 eNanoMapper database and RSQ API need an API key?

Neither needs a paid key — eNanoMapper database is callable with no signup, and RSQ API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call eNanoMapper database and RSQ API from the browser?

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

Are eNanoMapper database and RSQ API free for commercial use?

eNanoMapper database has unclear commercial terms, and RSQ API 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.