CIRCL CVE Search vs Datamuse
Same instrument, two spec sheets — measured, not claimed.
CIRCL CVE Search vs Datamuse: common questions
Which is more reliable, CIRCL CVE Search or Datamuse?
On our scheduled checks, CIRCL CVE Search leads on measured uptime — CIRCL CVE Search at 98.0% versus Datamuse at 92.2% 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 Datamuse?
Datamuse has the lower median latency in our checks — CIRCL CVE Search responds in 698 ms versus Datamuse at 180 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 Datamuse need an API key?
Datamuse needs no key, while CIRCL CVE Search requires a free API key. If you want to start calling without signup, reach for Datamuse first.
Can I call CIRCL CVE Search and Datamuse from the browser?
Only CIRCL CVE Search is browser-friendly — it returns CORS headers over HTTPS. Datamuse needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are CIRCL CVE Search and Datamuse free for commercial use?
CIRCL CVE Search has unclear commercial terms, and Datamuse 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.