CIRCL CVE Search vs FIRST News API
Same instrument, two spec sheets — measured, not claimed.
CIRCL CVE Search vs FIRST News API: common questions
Which is more reliable, CIRCL CVE Search or FIRST News API?
On our scheduled checks, FIRST News API leads on measured uptime — CIRCL CVE Search at 98.0% versus FIRST News API at 100% 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, CIRCL CVE Search or FIRST News API?
CIRCL CVE Search has the lower median latency in our checks — CIRCL CVE Search responds in 698 ms versus FIRST News API at 780 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 CIRCL CVE Search and FIRST News API need an API key?
FIRST News API needs no key, while CIRCL CVE Search requires a free API key. If you want to start calling without signup, reach for FIRST News API first.
Can I call CIRCL CVE Search and FIRST News API from the browser?
Yes — both CIRCL CVE Search and FIRST News 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 CIRCL CVE Search and FIRST News API free for commercial use?
CIRCL CVE Search has unclear commercial terms, and FIRST News 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.