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AutoChangelog vs CDNJS

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

APIAutoChangelogNEW—CDNJSNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree and open, no key
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

AutoChangelog vs CDNJS: common questions

Which is more reliable, AutoChangelog or CDNJS?

On our scheduled checks, CDNJS leads on measured uptime — AutoChangelog at —% versus CDNJS 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 AutoChangelog and CDNJS need an API key?

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

Can I call AutoChangelog and CDNJS from the browser?

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

Are AutoChangelog and CDNJS free for commercial use?

AutoChangelog has unclear commercial terms, and CDNJS 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.