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Arul's IP API vs ClickSend REST API v3

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

APIArul's IP APINEW—ClickSend REST API v3NEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublished6000 req/window · 5999 remaining · resets 1
In directory since2026-07-052026-07-05
operationalpartialdownno data

Arul's IP API vs ClickSend REST API v3: common questions

Which is more reliable, Arul's IP API or ClickSend REST API v3?

On our scheduled checks, ClickSend REST API v3 leads on measured uptime — Arul's IP API at —% versus ClickSend REST API v3 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 Arul's IP API and ClickSend REST API v3 need an API key?

Arul's IP API needs no key, while ClickSend REST API v3 requires a free API key. If you want to start calling without signup, reach for Arul's IP API first.

Can I call Arul's IP API and ClickSend REST API v3 from the browser?

Yes — both Arul's IP API and ClickSend REST API v3 send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Arul's IP API and ClickSend REST API v3 free for commercial use?

Arul's IP API has unclear commercial terms, and ClickSend REST API v3 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.