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Wizard World vs Wolne Lektury

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

APIWizard WorldNEW—Wolne LekturyNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedWorks are public domain or on free/Creative Commons licenses (per WolneLektury); API terms not formally stated
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Wizard World vs Wolne Lektury: common questions

Which is more reliable, Wizard World or Wolne Lektury?

On our scheduled checks, Wolne Lektury leads on measured uptime — Wizard World at —% versus Wolne Lektury 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 Wizard World and Wolne Lektury need an API key?

Neither needs a paid key — Wizard World is callable with no signup, and Wolne Lektury is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Wizard World and Wolne Lektury from the browser?

Yes — both Wizard World and Wolne Lektury 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 Wizard World and Wolne Lektury free for commercial use?

Wizard World has unclear commercial terms, and Wolne Lektury 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.