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SuperHeroes vs Universalis

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

APISuperHeroesNEW—UniversalisNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified; crowdsourced data
Free tierFree tier — key may be requiredFree, no API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

SuperHeroes vs Universalis: common questions

Which is more reliable, SuperHeroes or Universalis?

On our scheduled checks, Universalis leads on measured uptime — SuperHeroes 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 SuperHeroes and Universalis need an API key?

Universalis needs no key, while SuperHeroes requires a free API key. If you want to start calling without signup, reach for Universalis first.

Can I call SuperHeroes and Universalis from the browser?

Yes — both SuperHeroes 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 SuperHeroes and Universalis free for commercial use?

SuperHeroes 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.