npm Registry vs ParlayAPI

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

Uptime · 30d
Uptime · 90d100%87.5%
Uptime · 30d100%87.5%
P50 · ms201211
P95 · ms12461536
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified
Free tierFree (public registry)
Rate limitUnpublished (bulk scraping discouraged)
In directory since2026-07-052026-10-04
operationalpartialdownno data

npm Registry vs ParlayAPI: common questions

Which is more reliable, npm Registry or ParlayAPI?

On our scheduled checks, npm Registry leads on measured uptime — npm Registry at 100% versus ParlayAPI at 87.5% 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, npm Registry or ParlayAPI?

npm Registry has the lower median latency in our checks — npm Registry responds in 201 ms versus ParlayAPI at 211 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 npm Registry and ParlayAPI need an API key?

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

Can I call npm Registry and ParlayAPI from the browser?

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

Are npm Registry and ParlayAPI free for commercial use?

npm Registry has unclear commercial terms, and ParlayAPI 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.