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Attack on Titan API vs Demon Slayer API

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

APIAttack on Titan APIHEALTHY91Demon Slayer APIHEALTHY78
Uptime · 30d
Uptime · 90d100%96.1%
Uptime · 30d100%96.7%
P50 · ms5013390
P95 · ms17934643
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Attack on Titan API vs Demon Slayer API: common questions

Which is more reliable, Attack on Titan API or Demon Slayer API?

On our scheduled checks, Attack on Titan API leads on measured uptime — Attack on Titan API at 100% versus Demon Slayer API at 96.1% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Attack on Titan API or Demon Slayer API?

Attack on Titan API has the lower median latency in our checks — Attack on Titan API responds in 501 ms versus Demon Slayer API at 3390 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Attack on Titan API and Demon Slayer API need an API key?

Neither needs a paid key — Attack on Titan API is callable with no signup, and Demon Slayer API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Attack on Titan API and Demon Slayer API from the browser?

Yes — both Attack on Titan API and Demon Slayer API 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 Attack on Titan API and Demon Slayer API free for commercial use?

Attack on Titan API has unclear commercial terms, and Demon Slayer 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.