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CarsXE vs Transport for Paris, France

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

APICarsXENEW—Transport for Paris, FranceNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedOpenDataSoft platform defaults (unpublished here)
In directory since2026-07-052026-07-05
operationalpartialdownno data

CarsXE vs Transport for Paris, France: common questions

Which is more reliable, CarsXE or Transport for Paris, France?

On our scheduled checks, Transport for Paris, France leads on measured uptime — CarsXE at —% versus Transport for Paris, France 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 CarsXE and Transport for Paris, France need an API key?

Transport for Paris, France needs no key, while CarsXE requires a free API key. If you want to start calling without signup, reach for Transport for Paris, France first.

Can I call CarsXE and Transport for Paris, France from the browser?

Only Transport for Paris, France is browser-friendly — it returns CORS headers over HTTPS. CarsXE needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are CarsXE and Transport for Paris, France free for commercial use?

CarsXE has unclear commercial terms, and Transport for Paris, France 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.