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Deck of Cards vs Psychonauts API

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

APIDeck of CardsNEW—Psychonauts APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified; fan tribute, game © Double Fine
Free tierFree — limits not publishedFree, no API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Deck of Cards vs Psychonauts API: common questions

Which is more reliable, Deck of Cards or Psychonauts API?

On our scheduled checks, Psychonauts API leads on measured uptime — Deck of Cards at —% versus Psychonauts 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 Deck of Cards and Psychonauts API need an API key?

Neither needs a paid key — Deck of Cards is callable with no signup, and Psychonauts API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Deck of Cards and Psychonauts API from the browser?

Only Deck of Cards is browser-friendly — it returns CORS headers over HTTPS. Psychonauts API needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Deck of Cards and Psychonauts API free for commercial use?

Deck of Cards has unclear commercial terms, and Psychonauts 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.