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Slack vs The Muse

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

APISlackNEW—The MuseNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Slack vs The Muse: common questions

Which is more reliable, Slack or The Muse?

On our scheduled checks, The Muse leads on measured uptime — Slack at —% versus The Muse 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 Slack and The Muse need an API key?

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

Can I call Slack and The Muse from the browser?

Only Slack 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 Slack and The Muse free for commercial use?

Slack 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.