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D&D 5e API vs Universalis

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

APID&D 5e APINEW—UniversalisNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified; crowdsourced data
Free tierFree — limits not publishedFree, no API key required
Rate limit100 req/window · 99 remaining · resets 1783515667Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

D&D 5e API vs Universalis: common questions

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

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

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

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

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

D&D 5e API has unclear commercial terms, and Universalis 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.