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CIRCL CVE Search vs Court Rules

Same instrument, two spec sheets — measured, not claimed.

APICIRCL CVE SearchHEALTHY90Court RulesDYING37
Uptime · 30d
Uptime · 90d96.1%0.0%
Uptime · 30d94.8%0.0%
P50 · ms503—
P95 · ms2899—
AuthapiKeynone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified
Free tierFree tier — API key required
Rate limitRetry-After: 5s
In directory since2026-07-052026-10-04
operationalpartialdownno data

CIRCL CVE Search vs Court Rules: common questions

Which is more reliable, CIRCL CVE Search or Court Rules?

On our scheduled checks, CIRCL CVE Search leads on measured uptime — CIRCL CVE Search at 96.1% versus Court Rules at 0.0% 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 CIRCL CVE Search and Court Rules need an API key?

Court Rules needs no key, while CIRCL CVE Search requires a free API key. If you want to start calling without signup, reach for Court Rules first.

Can I call CIRCL CVE Search and Court Rules from the browser?

Only CIRCL CVE Search is browser-friendly — it returns CORS headers over HTTPS. Court Rules needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are CIRCL CVE Search and Court Rules free for commercial use?

CIRCL CVE Search has unclear commercial terms, and Court Rules 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.