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Personality.fyi vs Zen Quotes

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

APIPersonality.fyiNEW—Zen QuotesNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — no authFree — no key
Rate limitUnpublishedRate-limited on the free tier (see zenquotes.io)
In directory since2026-07-052026-07-05
operationalpartialdownno data

Personality.fyi vs Zen Quotes: common questions

Which is more reliable, Personality.fyi or Zen Quotes?

On our scheduled checks, Zen Quotes leads on measured uptime — Personality.fyi at —% versus Zen Quotes 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 Personality.fyi and Zen Quotes need an API key?

Neither needs a paid key — Personality.fyi is callable with no signup, and Zen Quotes is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Personality.fyi and Zen Quotes from the browser?

Only Personality.fyi is browser-friendly — it returns CORS headers over HTTPS. Zen Quotes needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Personality.fyi and Zen Quotes free for commercial use?

Personality.fyi has unclear commercial terms, and Zen Quotes 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.