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The Muse vs Namedays Calendar

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

APIThe MuseUNMONITORED—Namedays CalendarNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

The Muse vs Namedays Calendar: common questions

Which is more reliable, The Muse or Namedays Calendar?

Only Namedays Calendar is on our probe schedule so far (—% uptime over 90 days). The other is catalogued but not yet live-checked, so we can't compare measured reliability head-to-head — check the uncovered API's own status page for now.

Do The Muse and Namedays Calendar need an API key?

Neither needs a paid key — The Muse is callable with no signup, and Namedays Calendar is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call The Muse and Namedays Calendar from the browser?

Yes — both The Muse and Namedays Calendar 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 The Muse and Namedays Calendar free for commercial use?

The Muse has unclear commercial terms, and Namedays Calendar 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.