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BulkSMS JSON REST API vs Findwork

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

APIBulkSMS JSON REST APINEW—FindworkNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — key may be required
Rate limitUnpublished4294967295 req/window · 4294967295 remaining · resets 0
In directory since2026-07-052026-07-05
operationalpartialdownno data

BulkSMS JSON REST API vs Findwork: common questions

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

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

Both ask you to authenticate — BulkSMS JSON REST API uses an API key and Findwork 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 BulkSMS JSON REST API and Findwork from the browser?

Neither sends browser-friendly CORS headers reliably, so call BulkSMS JSON REST API and Findwork from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

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

BulkSMS JSON REST API has unclear commercial terms, and Findwork 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.