Hollow Sentinel integration

How Hollow Reserve and Hollow Sentinel complement each other — experience funnels plus store intelligence on the same shop.

Hollow Reserve focuses on experience commerce — blueprints, booking, and client ledger. Hollow Sentinel focuses on operational intelligence — daily briefings, health scores, baselines, and revenue at risk. On the same store they answer different questions without replacing each other.

Product roles

Hollow ReserveHollow Sentinel
Experience Blueprints and widget bookingPassive monitoring and store memory
Per-journey funnel analytics (Professional+)Daily briefing and health scores
Client ledger and appointment calendarInsights, revenue at risk, and timeline (Growth+)
Deposits via Shopify checkoutKlaviyo flow monitoring and Slack alerts (Growth+)

Command Center handoff

When Sentinel is not installed, Reserve Command Center can surface an ecosystem upsell card with a link to learn about store intelligence. When Sentinel is installed, Reserve deep-links to Sentinel for store-wide memory and keeps Booking insights focused on experience ops — each app keeps its own Command Center.

Sentinel + Engine + Reserve

Sentinel can recommend Arcanum Engine playbooks when both are installed. Reserve handles the booking journey; Engine acts on broader store signals. Arcanum Commerce OS bundles Engine Ops, Sentinel Scale, and Reserve Professional for high-volume operators.

Engine integration

Ecosystem bundles

Hollow Sentinel documentation

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