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Chess.com vs Hyrule Compendium

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

APIChess.comNEW—Hyrule CompendiumNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — no API keyFree — no API key
Rate limitSerial requests expected; no fixed cap publishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Chess.com vs Hyrule Compendium: common questions

Which is more reliable, Chess.com or Hyrule Compendium?

On our scheduled checks, Hyrule Compendium leads on measured uptime — Chess.com at —% versus Hyrule Compendium 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 Chess.com and Hyrule Compendium need an API key?

Neither needs a paid key — Chess.com is callable with no signup, and Hyrule Compendium is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Chess.com and Hyrule Compendium from the browser?

Yes — both Chess.com and Hyrule Compendium 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 Chess.com and Hyrule Compendium free for commercial use?

Chess.com has unclear commercial terms, and Hyrule Compendium 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.