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Crossref Metadata Search vs Hindi Quotes

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

APICrossref Metadata SearchNEW—Hindi QuotesNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licenseOpen Crossref metadata (much is CC0)Unverified
Free tierFree, no key (public pool)Free — limits not published
Rate limit5 requests/second, 1 concurrent (public pool, per X-Rate-Limit headers)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Crossref Metadata Search vs Hindi Quotes: common questions

Which is more reliable, Crossref Metadata Search or Hindi Quotes?

On our scheduled checks, Hindi Quotes leads on measured uptime — Crossref Metadata Search at —% versus Hindi Quotes 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 Crossref Metadata Search and Hindi Quotes need an API key?

Neither needs a paid key — Crossref Metadata Search is callable with no signup, and Hindi Quotes is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Crossref Metadata Search and Hindi Quotes from the browser?

Yes — both Crossref Metadata Search and Hindi Quotes 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 Crossref Metadata Search and Hindi Quotes free for commercial use?

Crossref Metadata Search allows commercial use on its free tier, and Hindi Quotes 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.