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CountryStateCity vs Open Topo Data

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

APICountryStateCityNEW—Open Topo DataNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesno
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

CountryStateCity vs Open Topo Data: common questions

Which is more reliable, CountryStateCity or Open Topo Data?

On our scheduled checks, Open Topo Data leads on measured uptime — CountryStateCity at —% versus Open Topo Data 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 CountryStateCity and Open Topo Data need an API key?

Open Topo Data needs no key, while CountryStateCity requires a free API key. If you want to start calling without signup, reach for Open Topo Data first.

Can I call CountryStateCity and Open Topo Data from the browser?

Only CountryStateCity is browser-friendly — it returns CORS headers over HTTPS. Open Topo Data needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are CountryStateCity and Open Topo Data free for commercial use?

CountryStateCity has unclear commercial terms, and Open Topo Data 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.