Court Rules vs OpenCorporates

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

Uptime · 30d
Uptime · 90d0.0%0.0%
Uptime · 30d0.0%0.0%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified
Free tierFree tier — API key required
Rate limitUnpublished
In directory since2026-10-042026-07-05
operationalpartialdownno data

Court Rules vs OpenCorporates: common questions

Which is more reliable, Court Rules or OpenCorporates?

Both are neck-and-neck — Court Rules and OpenCorporates each measure 0.0% 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.

Do Court Rules and OpenCorporates need an API key?

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

Can I call Court Rules and OpenCorporates from the browser?

Neither sends browser-friendly CORS headers reliably, so call Court Rules and OpenCorporates from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Court Rules and OpenCorporates free for commercial use?

Court Rules has unclear commercial terms, and OpenCorporates 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.