npm Registry vs Poptin API
Same instrument, two spec sheets — measured, not claimed.
npm Registry vs Poptin API: common questions
Which is more reliable, npm Registry or Poptin API?
Both are neck-and-neck — npm Registry and Poptin API 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, npm Registry or Poptin API?
npm Registry has the lower median latency in our checks — npm Registry responds in 201 ms versus Poptin API at 698 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 Poptin API need an API key?
npm Registry needs no key, while Poptin API requires a free API key. If you want to start calling without signup, reach for npm Registry first.
Can I call npm Registry and Poptin API from the browser?
Yes — both npm Registry and Poptin API 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 Poptin API free for commercial use?
npm Registry has unclear commercial terms, and Poptin API 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.