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Arul's IP API vs ClickSend REST API v3

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

APIArul's IP APIHEALTHY94ClickSend REST API v3HEALTHY96
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms502324
P95 · ms14691035
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?

Both are neck-and-neck — Arul's IP API and ClickSend REST API v3 each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

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

ClickSend REST API v3 has the lower median latency in our checks — Arul's IP API responds in 502 ms versus ClickSend REST API v3 at 324 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

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.