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ClickSend REST API v3 vs Country.is

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

APIClickSend REST API v3UNMONITORED—Country.isNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree, no API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ClickSend REST API v3 vs Country.is: common questions

Which is more reliable, ClickSend REST API v3 or Country.is?

Only Country.is is on our probe schedule so far (—% uptime over 90 days). The other is catalogued but not yet live-checked, so we can't compare measured reliability head-to-head — check the uncovered API's own status page for now.

Do ClickSend REST API v3 and Country.is need an API key?

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

Can I call ClickSend REST API v3 and Country.is from the browser?

Yes — both ClickSend REST API v3 and Country.is 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 ClickSend REST API v3 and Country.is free for commercial use?

ClickSend REST API v3 has unclear commercial terms, and Country.is 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.