One hub for the
whole fleet.

Arca Sentry stands alone on every GPU host. When you scale to many hosts, Arca Nexusis the optional enterprise hub that rolls every Sentry’s verdicts into one place inside your perimeter, on your terms, with no third party in the loop.

Nexus deploys inside your environment, with no calls to the outside world after install. Sentries forward ledger entries over a secured, mutually authenticated stream; Nexus verifies each entry came from the host that claims to have sent it, and stores it durably for you. The fleet dashboard stays local to the Nexus server by default.

• ✓Air-gap deployable · runs entirely inside your perimeter
• ✓Secured, mutually authenticated stream from every Sentry
• ✓Host identity verified per entry · spoofing fails
• ✓Durable storage · re-deliveries de-duplicated automatically
• ✓Offline license verification · no callbacks to anywhere
• ✓Fleet dashboard · local to the Nexus server by default
• ✓Stricter privileges than the Sentry itself · hardened deployment
• ✓One Nexus per perimeter · many Sentries per Nexus