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adresse.data.gouv.fr vs Open Topo Data

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

APIadresse.data.gouv.frHEALTHY88Open Topo DataHEALTHY95
Uptime · 30d
Uptime · 90d100%93.1%
Uptime · 30d100%88.3%
P50 · ms853285
P95 · ms2310573
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licenseLicence Ouverte / ODbL (Base Adresse Nationale)Unverified
Free tierFree, no API keyFree — limits not published
Rate limit50 requests/second per IP (documented)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

adresse.data.gouv.fr vs Open Topo Data: common questions

Which is more reliable, adresse.data.gouv.fr or Open Topo Data?

On our scheduled checks, adresse.data.gouv.fr leads on measured uptime — adresse.data.gouv.fr at 100% versus Open Topo Data at 93.1% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, adresse.data.gouv.fr or Open Topo Data?

Open Topo Data has the lower median latency in our checks — adresse.data.gouv.fr responds in 853 ms versus Open Topo Data at 285 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do adresse.data.gouv.fr and Open Topo Data need an API key?

Neither needs a paid key — adresse.data.gouv.fr is callable with no signup, and Open Topo Data is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call adresse.data.gouv.fr and Open Topo Data from the browser?

Only adresse.data.gouv.fr is browser-friendly — it returns CORS headers over HTTPS. Open Topo Data needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are adresse.data.gouv.fr and Open Topo Data free for commercial use?

adresse.data.gouv.fr allows commercial use on its free tier, and Open Topo Data 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.