npm Registry vs VatcheckAPI
Same instrument, two spec sheets — measured, not claimed.
npm Registry vs VatcheckAPI: common questions
Which is more reliable, npm Registry or VatcheckAPI?
On our scheduled checks, VatcheckAPI leads on measured uptime — npm Registry at —% versus VatcheckAPI at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Do npm Registry and VatcheckAPI need an API key?
npm Registry needs no key, while VatcheckAPI requires a free API key. If you want to start calling without signup, reach for npm Registry first.
Can I call npm Registry and VatcheckAPI from the browser?
Yes — both npm Registry and VatcheckAPI send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are npm Registry and VatcheckAPI free for commercial use?
npm Registry has unclear commercial terms, and VatcheckAPI 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.