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City, Berlin vs EPA

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

APICity, BerlinNEW—EPANEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseVaries per dataset (many CC-BY / dl-de-by-2.0)Unverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

City, Berlin vs EPA: common questions

Which is more reliable, City, Berlin or EPA?

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

Neither needs a paid key — City, Berlin is callable with no signup, and EPA is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call City, Berlin and EPA from the browser?

Only EPA 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 EPA free for commercial use?

City, Berlin has unclear commercial terms, and EPA 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.