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Exchange Rates API vs SEC EDGAR Data

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

APIExchange Rates APINEW—SEC EDGAR DataNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedPublic domain (U.S. government work)
Free tierFree — limits not publishedFree — public government data
Rate limitUnpublishedMax 10 requests/second; descriptive User-Agent required (SEC fair-access policy)
In directory since2026-07-052026-07-05
operationalpartialdownno data

Exchange Rates API vs SEC EDGAR Data: common questions

Which is more reliable, Exchange Rates API or SEC EDGAR Data?

On our scheduled checks, SEC EDGAR Data leads on measured uptime — Exchange Rates API at —% versus SEC EDGAR 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 Exchange Rates API and SEC EDGAR Data need an API key?

Neither needs a paid key — Exchange Rates API is callable with no signup, and SEC EDGAR Data is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Exchange Rates API and SEC EDGAR Data from the browser?

Only SEC EDGAR Data is browser-friendly — it returns CORS headers over HTTPS. Exchange Rates API needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Exchange Rates API and SEC EDGAR Data free for commercial use?

Exchange Rates API has unclear commercial terms, and SEC EDGAR Data allows commercial use on its free tier. 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.