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Exchange Rates API vs SEC EDGAR Data

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

APIExchange Rates APIHEALTHY88SEC EDGAR DataHEALTHY99
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms810119
P95 · ms4162755
Authnonenone
CORSyesyes
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?

Both are neck-and-neck — Exchange Rates API and SEC EDGAR Data 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, Exchange Rates API or SEC EDGAR Data?

SEC EDGAR Data has the lower median latency in our checks — Exchange Rates API responds in 810 ms versus SEC EDGAR Data at 119 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 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?

Yes — both Exchange Rates API and SEC EDGAR 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 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.