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Data.gov vs PermisAPI

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

APIData.govHEALTHY79PermisAPIHEALTHY86
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms9311125
P95 · ms20352663
AuthnoneapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key may be required for production
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Data.gov vs PermisAPI: common questions

Which is more reliable, Data.gov or PermisAPI?

Both are neck-and-neck — Data.gov 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, Data.gov or PermisAPI?

Data.gov has the lower median latency in our checks — Data.gov responds in 931 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 Data.gov and PermisAPI need an API key?

Data.gov needs no key, while PermisAPI requires a free API key. If you want to start calling without signup, reach for Data.gov first.

Can I call Data.gov and PermisAPI from the browser?

Neither sends browser-friendly CORS headers reliably, so call Data.gov and PermisAPI from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Data.gov and PermisAPI free for commercial use?

Data.gov 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.