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Data USA vs District of Columbia Open Data

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

APIData USANEW—District of Columbia Open DataNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified (DC Open Data terms)
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Data USA vs District of Columbia Open Data: common questions

Which is more reliable, Data USA or District of Columbia Open Data?

On our scheduled checks, District of Columbia Open Data leads on measured uptime — Data USA at —% versus District of Columbia Open Data 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 Data USA and District of Columbia Open Data need an API key?

Neither needs a paid key — Data USA is callable with no signup, and District of Columbia Open Data is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Data USA and District of Columbia Open Data from the browser?

Yes — both Data USA and District of Columbia Open Data 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 Data USA and District of Columbia Open Data free for commercial use?

Data USA has unclear commercial terms, and District of Columbia Open 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.