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Quotes on Design vs Riddles API

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

APIQuotes on DesignNEW—Riddles APINEW—
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

Quotes on Design vs Riddles API: common questions

Which is more reliable, Quotes on Design or Riddles API?

On our scheduled checks, Riddles API leads on measured uptime — Quotes on Design at —% versus Riddles API 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 Quotes on Design and Riddles API need an API key?

Neither needs a paid key — Quotes on Design is callable with no signup, and Riddles API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Quotes on Design and Riddles API from the browser?

Yes — both Quotes on Design and Riddles API 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 Quotes on Design and Riddles API free for commercial use?

Quotes on Design has unclear commercial terms, and Riddles API 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.