Gutendex vs KDP Intelligence
Same instrument, two spec sheets — measured, not claimed.
Gutendex vs KDP Intelligence: common questions
Which is more reliable, Gutendex or KDP Intelligence?
On our scheduled checks, KDP Intelligence leads on measured uptime — Gutendex at —% versus KDP Intelligence 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 Gutendex and KDP Intelligence need an API key?
Neither needs a paid key — Gutendex is callable with no signup, and KDP Intelligence is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Gutendex and KDP Intelligence from the browser?
Only Gutendex is browser-friendly — it returns CORS headers over HTTPS. KDP Intelligence needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Gutendex and KDP Intelligence free for commercial use?
Gutendex has unclear commercial terms, and KDP Intelligence 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.