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TETR.IO vs XIVAPI

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

APITETR.IONEW—XIVAPINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified; game content © Square Enix
Free tierFree, no API keyFree; optional free key raises limits
Rate limitHonor server-provided cache expiry (~60s); docs require cachingRate-limited; higher limits with a free key (see docs)
In directory since2026-07-052026-07-05
operationalpartialdownno data

TETR.IO vs XIVAPI: common questions

Which is more reliable, TETR.IO or XIVAPI?

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

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

Can I call TETR.IO and XIVAPI from the browser?

Yes — both TETR.IO and XIVAPI 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 TETR.IO and XIVAPI free for commercial use?

TETR.IO has unclear commercial terms, and XIVAPI 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.