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Crates.io vs ELI

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

APICrates.ioHEALTHY90ELIHEALTHY92
Uptime · 30d
Uptime · 90d99.02%99.02%
Uptime · 30d100%98.3%
P50 · ms458591
P95 · ms13171817
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key may be required for production
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Crates.io vs ELI: common questions

Which is more reliable, Crates.io or ELI?

Both are neck-and-neck — Crates.io and ELI each measure 99.02% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Crates.io or ELI?

Crates.io has the lower median latency in our checks — Crates.io responds in 458 ms versus ELI at 591 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 Crates.io and ELI need an API key?

Crates.io needs no key, while ELI requires a free API key. If you want to start calling without signup, reach for Crates.io first.

Can I call Crates.io and ELI from the browser?

Yes — both Crates.io and ELI 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 Crates.io and ELI free for commercial use?

Crates.io has unclear commercial terms, and ELI 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.