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Psychonauts API vs TETR.IO

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

APIPsychonauts APINEW—TETR.IONEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified; fan tribute, game © Double FineUnverified
Free tierFree, no API key requiredFree, no API key
Rate limitUnpublishedHonor server-provided cache expiry (~60s); docs require caching
In directory since2026-07-052026-07-05
operationalpartialdownno data

Psychonauts API vs TETR.IO: common questions

Which is more reliable, Psychonauts API or TETR.IO?

On our scheduled checks, TETR.IO leads on measured uptime — Psychonauts API at —% versus TETR.IO 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 Psychonauts API and TETR.IO need an API key?

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

Can I call Psychonauts API and TETR.IO from the browser?

Only TETR.IO 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 Psychonauts API and TETR.IO free for commercial use?

Psychonauts API has unclear commercial terms, and TETR.IO 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.