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Chronicling America vs Etsy

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

APIChronicling AmericaNEW—EtsyNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licensePublic domain / no known copyright (Library of Congress)Unverified
Free tierFree — public-domain collection dataFree tier — API key required
Rate limitLoC throttles heavy crawling (see LoC API policy)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Chronicling America vs Etsy: common questions

Which is more reliable, Chronicling America or Etsy?

On our scheduled checks, Etsy leads on measured uptime — Chronicling America at —% versus Etsy 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 Chronicling America and Etsy need an API key?

Chronicling America needs no key, while Etsy requires a free API key. If you want to start calling without signup, reach for Chronicling America first.

Can I call Chronicling America and Etsy from the browser?

Only Etsy is browser-friendly — it returns CORS headers over HTTPS. Chronicling America needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Chronicling America and Etsy free for commercial use?

Chronicling America allows commercial use on its free tier, and Etsy 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.