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ImprovMX API vs The Muse

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

APIImprovMX APIDEAD0The MuseDEAD0
Uptime · 30d
Uptime · 90d0.0%0.0%
Uptime · 30d0.0%0.0%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — API key required
Rate limit301 req/window · 300 remaining · resets 1783526520Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ImprovMX API vs The Muse: common questions

Which is more reliable, ImprovMX API or The Muse?

Both are neck-and-neck — ImprovMX API and The Muse each measure 0.0% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Do ImprovMX API and The Muse need an API key?

The Muse needs no key, while ImprovMX API requires a free API key. If you want to start calling without signup, reach for The Muse first.

Can I call ImprovMX API and The Muse from the browser?

Only ImprovMX API is browser-friendly — it returns CORS headers over HTTPS. The Muse needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are ImprovMX API and The Muse free for commercial use?

ImprovMX API has unclear commercial terms, and The Muse 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.