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Demon Slayer API vs Trace Moe

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

APIDemon Slayer APIUNMONITORED—Trace MoeNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree, no key; per-IP search quota applies
Rate limitUnpublishedConcurrency/quota limited per IP (check GET /me)
In directory since2026-07-052026-07-05
operationalpartialdownno data

Demon Slayer API vs Trace Moe: common questions

Which is more reliable, Demon Slayer API or Trace Moe?

Only Trace Moe is on our probe schedule so far (—% uptime over 90 days). The other is catalogued but not yet live-checked, so we can't compare measured reliability head-to-head — check the uncovered API's own status page for now.

Do Demon Slayer API and Trace Moe need an API key?

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

Can I call Demon Slayer API and Trace Moe from the browser?

Yes — both Demon Slayer API and Trace Moe 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 Demon Slayer API and Trace Moe free for commercial use?

Demon Slayer API has unclear commercial terms, and Trace Moe 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.