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Crates.io vs Vector Express v2.0

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

APICrates.ioHEALTHY90Vector Express v2.0HEALTHY91
Uptime · 30d
Uptime · 90d99.02%100%
Uptime · 30d100%100%
P50 · ms458613
P95 · ms13171662
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree
Rate limitUnpublished5 req/window · 4 remaining · resets 1783513379
In directory since2026-07-052026-07-05
operationalpartialdownno data

Crates.io vs Vector Express v2.0: common questions

Which is more reliable, Crates.io or Vector Express v2.0?

On our scheduled checks, Vector Express v2.0 leads on measured uptime — Crates.io at 99.02% versus Vector Express v2.0 at 100% 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, Crates.io or Vector Express v2.0?

Crates.io has the lower median latency in our checks — Crates.io responds in 458 ms versus Vector Express v2.0 at 613 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 Vector Express v2.0 need an API key?

Neither needs a paid key — Crates.io is callable with no signup, and Vector Express v2.0 is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Crates.io and Vector Express v2.0 from the browser?

Only Crates.io is browser-friendly — it returns CORS headers over HTTPS. Vector Express v2.0 needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Crates.io and Vector Express v2.0 free for commercial use?

Crates.io has unclear commercial terms, and Vector Express v2.0 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.