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Transport for London, England vs Transport for Paris, France

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

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Rate limitUnpublishedOpenDataSoft platform defaults (unpublished here)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

Transport for London, England vs Transport for Paris, France: common questions

Which is more reliable, Transport for London, England or Transport for Paris, France?

On our scheduled checks, Transport for Paris, France leads on measured uptime — Transport for London, England 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 Transport for London, England and Transport for Paris, France need an API key?

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

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

Yes — both Transport for London, England and Transport for Paris, France send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Transport for London, England and Transport for Paris, France free for commercial use?

Transport for London, England 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.