Gutendex vs Urantia Papers

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

Uptime · 30d
Uptime · 90d8.8%73.5%
Uptime · 30d8.3%78.3%
P50 · ms32294076
P95 · ms46904988
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licensePublic domain (Project Gutenberg data)Unverified
Free tierFree, no keyFree — limits not published
Rate limitUnpublished200 req/window · 199 remaining · resets 1783508497
In directory since2026-07-052026-07-05
operationalpartialdownno data

Gutendex vs Urantia Papers: common questions

Which is more reliable, Gutendex or Urantia Papers?

On our scheduled checks, Urantia Papers leads on measured uptime — Gutendex at 8.8% versus Urantia Papers at 73.5% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Gutendex or Urantia Papers?

Gutendex has the lower median latency in our checks — Gutendex responds in 3229 ms versus Urantia Papers at 4076 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Gutendex and Urantia Papers need an API key?

Neither needs a paid key — Gutendex is callable with no signup, and Urantia Papers is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Gutendex and Urantia Papers from the browser?

Yes — both Gutendex and Urantia Papers 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 Gutendex and Urantia Papers free for commercial use?

Gutendex has unclear commercial terms, and Urantia Papers 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.