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Catherine Shulman's Quotes vs Excuser

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

APICatherine Shulman's QuotesNEW—ExcuserNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Catherine Shulman's Quotes vs Excuser: common questions

Which is more reliable, Catherine Shulman's Quotes or Excuser?

On our scheduled checks, Excuser leads on measured uptime — Catherine Shulman's Quotes at —% versus Excuser 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 Catherine Shulman's Quotes and Excuser need an API key?

Neither needs a paid key — Catherine Shulman's Quotes is callable with no signup, and Excuser is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Catherine Shulman's Quotes and Excuser from the browser?

Yes — both Catherine Shulman's Quotes and Excuser 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 Catherine Shulman's Quotes and Excuser free for commercial use?

Catherine Shulman's Quotes has unclear commercial terms, and Excuser 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.