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 Reserve | Hollow Sentinel |
|---|---|
| Experience Blueprints and widget booking | Passive monitoring and store memory |
| Per-journey funnel analytics (Professional+) | Daily briefing and health scores |
| Client ledger and appointment calendar | Insights, revenue at risk, and timeline (Growth+) |
| Deposits via Shopify checkout | Klaviyo 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, each app keeps its own Command Center — Reserve for today's appointments and active experiences, Sentinel for briefing and insights.
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.
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