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Atlas Academy vs D&D 5e API

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

APIAtlas AcademyNEW—D&D 5e 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 limitUnpublished100 req/window · 99 remaining · resets 1783515667
In directory since2026-07-052026-07-05
operationalpartialdownno data

Atlas Academy vs D&D 5e API: common questions

Which is more reliable, Atlas Academy or D&D 5e API?

On our scheduled checks, D&D 5e API leads on measured uptime — Atlas Academy at —% versus D&D 5e 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 Atlas Academy and D&D 5e API need an API key?

Neither needs a paid key — Atlas Academy is callable with no signup, and D&D 5e API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Atlas Academy and D&D 5e API from the browser?

Yes — both Atlas Academy and D&D 5e 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 Atlas Academy and D&D 5e API free for commercial use?

Atlas Academy has unclear commercial terms, and D&D 5e 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.