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Arbeitnow vs BulkSMS JSON REST API

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

APIArbeitnowNEW—BulkSMS JSON REST APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — no key requiredFree tier — API key required
Rate limit5 req/window · 4 remainingUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Arbeitnow vs BulkSMS JSON REST API: common questions

Which is more reliable, Arbeitnow or BulkSMS JSON REST API?

On our scheduled checks, BulkSMS JSON REST API leads on measured uptime — Arbeitnow at —% versus BulkSMS JSON REST 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 Arbeitnow and BulkSMS JSON REST API need an API key?

Arbeitnow needs no key, while BulkSMS JSON REST API requires a free API key. If you want to start calling without signup, reach for Arbeitnow first.

Can I call Arbeitnow and BulkSMS JSON REST API from the browser?

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

Are Arbeitnow and BulkSMS JSON REST API free for commercial use?

Arbeitnow has unclear commercial terms, and BulkSMS JSON REST 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.