shipapis
StarSubmit an APISubmit API

BulkSMS JSON REST API vs Hebrew Calendar

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

APIBulkSMS JSON REST APINEW—Hebrew CalendarNEW—
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 — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

BulkSMS JSON REST API vs Hebrew Calendar: common questions

Which is more reliable, BulkSMS JSON REST API or Hebrew Calendar?

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

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

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

Only Hebrew Calendar 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 BulkSMS JSON REST API and Hebrew Calendar free for commercial use?

BulkSMS JSON REST API has unclear commercial terms, and Hebrew Calendar 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.