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