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Open Library vs ShopSavvy

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

APIOpen LibraryHEALTHY—ShopSavvyNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseMixed — mostly openUnverified
Free tierUnlimited within courtesy limitsFree tier — API key required
Rate limitSoft — identified UA appreciatedUnpublished
In directory since2026-05-022026-07-05
operationalpartialdownno data

Open Library vs ShopSavvy: common questions

Which is more reliable, Open Library or ShopSavvy?

On our scheduled checks, ShopSavvy leads on measured uptime — Open Library at —% versus ShopSavvy 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 Open Library and ShopSavvy need an API key?

Open Library needs no key, while ShopSavvy requires a free API key. If you want to start calling without signup, reach for Open Library first.

Can I call Open Library and ShopSavvy from the browser?

Yes — both Open Library and ShopSavvy 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 Open Library and ShopSavvy free for commercial use?

Open Library has unclear commercial terms, and ShopSavvy 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.