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ListLoco API vs PyPI

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

APIListLoco APIHEALTHY100PyPIHEALTHY100
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms12746
P95 · ms443446
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ListLoco API vs PyPI: common questions

Which is more reliable, ListLoco API or PyPI?

Both are neck-and-neck — ListLoco API and PyPI 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, ListLoco API or PyPI?

PyPI has the lower median latency in our checks — ListLoco API responds in 127 ms versus PyPI at 46 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 ListLoco API and PyPI need an API key?

Neither needs a paid key — ListLoco API is callable with no signup, and PyPI is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call ListLoco API and PyPI from the browser?

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

Are ListLoco API and PyPI free for commercial use?

ListLoco API has unclear commercial terms, and PyPI 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.