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eNanoMapper database vs Fake JSON API

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

APIeNanoMapper databaseNEW—Fake JSON APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
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 Fake JSON API: common questions

Which is more reliable, eNanoMapper database or Fake JSON API?

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

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

Can I call eNanoMapper database and Fake JSON API from the browser?

Only Fake JSON API is browser-friendly — it returns CORS headers over HTTPS. eNanoMapper database needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are eNanoMapper database and Fake JSON API free for commercial use?

eNanoMapper database has unclear commercial terms, and Fake JSON 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.