app-package-archive
npm registry
The package registry behind the Node.js ecosystem, with full version history and downloadable tarballs for every package. The underlying registry API is keyless and our search queries it directly. Reach for it to trace a JavaScript package's release history or fetch an old version. Note that the npmjs.com website itself currently challenges traffic from datacenter networks, so deep links to package pages may show a verification step first.
Why it’s useful & how it works
User-facing www.npmjs.com is CF-challenged from datacenter IPs → access downgraded from api to captcha to describe the deep-link experience honestly. registry.npmjs.org JSON stays usable for programmatic probes. Niche/link-catalogue tier (see product-concept): surfaced as a described link to its package page.
API access
https://registry.npmjs.org/ <pkg> (keyless)
Access
May require solving a captcha before it responds.