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City, Nantes Open Data vs PermisAPI

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

APICity, Nantes Open DataHEALTHY83PermisAPIHEALTHY86
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms10731125
P95 · ms29662663
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree tier — API key may be required for production
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

City, Nantes Open Data vs PermisAPI: common questions

Which is more reliable, City, Nantes Open Data or PermisAPI?

Both are neck-and-neck — City, Nantes Open Data and PermisAPI each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, City, Nantes Open Data or PermisAPI?

City, Nantes Open Data has the lower median latency in our checks — City, Nantes Open Data responds in 1073 ms versus PermisAPI at 1125 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 City, Nantes Open Data and PermisAPI need an API key?

Both ask you to authenticate — City, Nantes Open Data uses an API key and PermisAPI uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call City, Nantes Open Data and PermisAPI from the browser?

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

Are City, Nantes Open Data and PermisAPI free for commercial use?

City, Nantes Open Data has unclear commercial terms, and PermisAPI 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.