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Footer Year Update vs The SMS Works API

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

APIFooter Year UpdateNEW—The SMS Works APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Footer Year Update vs The SMS Works API: common questions

Which is more reliable, Footer Year Update or The SMS Works API?

On our scheduled checks, The SMS Works API leads on measured uptime — Footer Year Update at —% versus The SMS Works API 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 Footer Year Update and The SMS Works API need an API key?

Footer Year Update needs no key, while The SMS Works API requires a free API key. If you want to start calling without signup, reach for Footer Year Update first.

Can I call Footer Year Update and The SMS Works API from the browser?

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

Are Footer Year Update and The SMS Works API free for commercial use?

Footer Year Update has unclear commercial terms, and The SMS Works API 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.