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City, Nantes Open Data vs Neotimo DGFiP Mirror

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

APICity, Nantes Open DataNEW—Neotimo DGFiP MirrorNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

City, Nantes Open Data vs Neotimo DGFiP Mirror: common questions

Which is more reliable, City, Nantes Open Data or Neotimo DGFiP Mirror?

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

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

Can I call City, Nantes Open Data and Neotimo DGFiP Mirror from the browser?

Yes — both City, Nantes Open Data and Neotimo DGFiP Mirror 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 City, Nantes Open Data and Neotimo DGFiP Mirror free for commercial use?

City, Nantes Open Data has unclear commercial terms, and Neotimo DGFiP Mirror 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.