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FastDOL vs Neotimo DGFiP Mirror

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

APIFastDOLHEALTHY85Neotimo DGFiP MirrorHEALTHY93
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms680524
P95 · ms17252594
AuthapiKeynone
CORSnoyes
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

FastDOL vs Neotimo DGFiP Mirror: common questions

Which is more reliable, FastDOL or Neotimo DGFiP Mirror?

Both are neck-and-neck — FastDOL and Neotimo DGFiP Mirror 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, FastDOL or Neotimo DGFiP Mirror?

Neotimo DGFiP Mirror has the lower median latency in our checks — FastDOL responds in 680 ms versus Neotimo DGFiP Mirror at 524 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 FastDOL and Neotimo DGFiP Mirror need an API key?

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

Can I call FastDOL and Neotimo DGFiP Mirror from the browser?

Only Neotimo DGFiP Mirror is browser-friendly — it returns CORS headers over HTTPS. FastDOL needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are FastDOL and Neotimo DGFiP Mirror free for commercial use?

FastDOL 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.