PyPI vs VATlayer

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

Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms46473
P95 · ms4462118
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

PyPI vs VATlayer: common questions

Which is more reliable, PyPI or VATlayer?

Both are neck-and-neck — PyPI and VATlayer 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, PyPI or VATlayer?

PyPI has the lower median latency in our checks — PyPI responds in 46 ms versus VATlayer at 473 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 PyPI and VATlayer need an API key?

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

Can I call PyPI and VATlayer from the browser?

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

Are PyPI and VATlayer free for commercial use?

PyPI has unclear commercial terms, and VATlayer 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.