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CarsXE vs Metro Lisboa

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

APICarsXENEW—Metro LisboaNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnono
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

CarsXE vs Metro Lisboa: common questions

Which is more reliable, CarsXE or Metro Lisboa?

On our scheduled checks, Metro Lisboa leads on measured uptime — CarsXE at —% versus Metro Lisboa 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 Metro Lisboa need an API key?

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

Can I call CarsXE and Metro Lisboa from the browser?

Neither sends browser-friendly CORS headers reliably, so call CarsXE and Metro Lisboa from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are CarsXE and Metro Lisboa free for commercial use?

CarsXE has unclear commercial terms, and Metro Lisboa 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.