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Open Library vs RuntimeBuzz Article API

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

APIOpen LibraryHEALTHY—RuntimeBuzz Article APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseMixed — mostly openUnverified
Free tierUnlimited within courtesy limitsFree — limits not published
Rate limitSoft — identified UA appreciatedUnpublished
In directory since2026-05-022026-07-05
operationalpartialdownno data

Open Library vs RuntimeBuzz Article API: common questions

Which is more reliable, Open Library or RuntimeBuzz Article API?

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

Neither needs a paid key — Open Library is callable with no signup, and RuntimeBuzz Article API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Open Library and RuntimeBuzz Article API from the browser?

Only Open Library is browser-friendly — it returns CORS headers over HTTPS. RuntimeBuzz Article API needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Open Library and RuntimeBuzz Article API free for commercial use?

Open Library has unclear commercial terms, and RuntimeBuzz Article API 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.