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Kanji API vs Random Word API

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

APIKanji APINEW—Random Word APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
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

Kanji API vs Random Word API: common questions

Which is more reliable, Kanji API or Random Word API?

On our scheduled checks, Random Word API leads on measured uptime — Kanji API at —% versus Random Word 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 Kanji API and Random Word API need an API key?

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

Can I call Kanji API and Random Word API from the browser?

Yes — both Kanji API and Random Word API 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 Kanji API and Random Word API free for commercial use?

Kanji API has unclear commercial terms, and Random Word 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.