Cataas vs STAPI
Same instrument, two spec sheets — measured, not claimed.
Cataas vs STAPI: common questions
Which is more reliable, Cataas or STAPI?
On our scheduled checks, STAPI leads on measured uptime — Cataas at —% versus STAPI 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 Cataas and STAPI need an API key?
Neither needs a paid key — Cataas is callable with no signup, and STAPI is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Cataas and STAPI from the browser?
Yes — both Cataas and STAPI 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 Cataas and STAPI free for commercial use?
Cataas has unclear commercial terms, and STAPI 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.