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Frankfurter vs SEC EDGAR Data

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

APIFrankfurterHEALTHY—SEC EDGAR DataNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useyesyes
Data licensePublic data (ECB reference rates)Public domain (U.S. government work)
Free tierUnlimited — abuse-rate-limited onlyFree — public government data
Rate limitUnpublished, generousMax 10 requests/second; descriptive User-Agent required (SEC fair-access policy)
In directory since2026-05-022026-07-05
operationalpartialdownno data

Frankfurter vs SEC EDGAR Data: common questions

Which is more reliable, Frankfurter or SEC EDGAR Data?

On our scheduled checks, SEC EDGAR Data leads on measured uptime — Frankfurter 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 Frankfurter and SEC EDGAR Data need an API key?

Neither needs a paid key — Frankfurter 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 Frankfurter and SEC EDGAR Data from the browser?

Yes — both Frankfurter 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 Frankfurter and SEC EDGAR Data free for commercial use?

Frankfurter allows commercial use on its free tier, 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.