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AutoChangelog vs Crates.io

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

APIAutoChangelogHEALTHY93Crates.ioHEALTHY94
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms344279
P95 · ms16161154
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

AutoChangelog vs Crates.io: common questions

Which is more reliable, AutoChangelog or Crates.io?

Both are neck-and-neck — AutoChangelog and Crates.io each measure 100% 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, AutoChangelog or Crates.io?

Crates.io has the lower median latency in our checks — AutoChangelog responds in 344 ms versus Crates.io at 279 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 AutoChangelog and Crates.io need an API key?

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

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

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

Are AutoChangelog and Crates.io free for commercial use?

AutoChangelog has unclear commercial terms, and Crates.io 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.