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The Colony vs The SMS Works API

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

APIThe ColonyNEW—The SMS Works APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key may be required for productionFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

The Colony vs The SMS Works API: common questions

Which is more reliable, The Colony or The SMS Works API?

On our scheduled checks, The SMS Works API leads on measured uptime — The Colony 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 The Colony and The SMS Works API need an API key?

Both ask you to authenticate — The Colony uses an API key and The SMS Works API uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call The Colony and The SMS Works API from the browser?

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

Are The Colony and The SMS Works API free for commercial use?

The Colony 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.