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Crossref Metadata Search vs Rig Veda

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

APICrossref Metadata SearchHEALTHY90Rig VedaDYING43
Uptime · 30d
Uptime · 90d97.1%6.9%
Uptime · 30d95.0%3.3%
P50 · ms522129
P95 · ms2683556
Authnonenone
CORSyesno
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Rate limit5 requests/second, 1 concurrent (public pool, per X-Rate-Limit headers)Unpublished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 Rig Veda: common questions

Which is more reliable, Crossref Metadata Search or Rig Veda?

On our scheduled checks, Crossref Metadata Search leads on measured uptime — Crossref Metadata Search at 97.1% versus Rig Veda at 6.9% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Crossref Metadata Search or Rig Veda?

Rig Veda has the lower median latency in our checks — Crossref Metadata Search responds in 522 ms versus Rig Veda at 129 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Crossref Metadata Search and Rig Veda need an API key?

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

Can I call Crossref Metadata Search and Rig Veda from the browser?

Only Crossref Metadata Search is browser-friendly — it returns CORS headers over HTTPS. Rig Veda needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Crossref Metadata Search and Rig Veda free for commercial use?

Crossref Metadata Search allows commercial use on its free tier, and Rig Veda 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.