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APIs.guru vs Catchdoms Security API

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

APIAPIs.guruNEW—Catchdoms Security APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree and open, no keyFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

APIs.guru vs Catchdoms Security API: common questions

Which is more reliable, APIs.guru or Catchdoms Security API?

On our scheduled checks, Catchdoms Security API leads on measured uptime — APIs.guru at —% versus Catchdoms Security 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 APIs.guru and Catchdoms Security API need an API key?

Neither needs a paid key — APIs.guru is callable with no signup, and Catchdoms Security API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call APIs.guru and Catchdoms Security API from the browser?

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

Are APIs.guru and Catchdoms Security API free for commercial use?

APIs.guru has unclear commercial terms, and Catchdoms Security 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.