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Data Dragon API vs ES·pera API

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

APIData Dragon APIHEALTHY100ES·pera APIDYING37
Uptime · 30d
Uptime · 90d100%0.0%
Uptime · 30d100%0.0%
P50 · ms60—
P95 · ms1428—
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified
Free tierFree — limits not published
Rate limitUnpublished
In directory since2026-07-052026-09-21
operationalpartialdownno data

Data Dragon API vs ES·pera API: common questions

Which is more reliable, Data Dragon API or ES·pera API?

On our scheduled checks, Data Dragon API leads on measured uptime — Data Dragon API at 100% versus ES·pera API at 0.0% 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 Data Dragon API and ES·pera API need an API key?

Neither needs a paid key — Data Dragon API is callable with no signup, and ES·pera API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Data Dragon API and ES·pera API from the browser?

Only Data Dragon API is browser-friendly — it returns CORS headers over HTTPS. ES·pera API needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Data Dragon API and ES·pera API free for commercial use?

Data Dragon API has unclear commercial terms, and ES·pera 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.