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City, Berlin vs City, Nantes Open Data

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

APICity, BerlinNEW—City, Nantes Open DataNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseVaries per dataset (many CC-BY / dl-de-by-2.0)Unverified
Free tierFree — limits not publishedFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

City, Berlin vs City, Nantes Open Data: common questions

Which is more reliable, City, Berlin or City, Nantes Open Data?

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

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

Can I call City, Berlin and City, Nantes Open Data from the browser?

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

Are City, Berlin and City, Nantes Open Data free for commercial use?

City, Berlin has unclear commercial terms, and City, Nantes Open 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.