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Affirmations.dev vs chucknorris.io

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

APIAffirmations.devNEW—chucknorris.ioNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree, no key
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Affirmations.dev vs chucknorris.io: common questions

Which is more reliable, Affirmations.dev or chucknorris.io?

On our scheduled checks, chucknorris.io leads on measured uptime — Affirmations.dev at —% versus chucknorris.io 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 Affirmations.dev and chucknorris.io need an API key?

Neither needs a paid key — Affirmations.dev is callable with no signup, and chucknorris.io is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Affirmations.dev and chucknorris.io from the browser?

Only chucknorris.io is browser-friendly — it returns CORS headers over HTTPS. Affirmations.dev needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Affirmations.dev and chucknorris.io free for commercial use?

Affirmations.dev has unclear commercial terms, and chucknorris.io 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.