---
description: Exxat DS — every design declares Product, Scope, and Persona before code. Consumer apps inherit the four-product shell (Prism, One — Schools, One — Sites, Custom). Anchored to ProductSwitcher + scope selector at runtime.
alwaysApply: true
appliesTo: [universal]
---

# Exxat DS — product, scope, and persona context

Exxat is **not a generic SaaS**. Every screen sits inside a product, a
scope hierarchy, and a role. Designs that ignore this leak across roles,
break in the wrong scope, or quietly violate HIPAA/FERPA.

## Domain references (load when designing)

- **`.cursor/skills/exxat-domain-context/SKILL.md`** — persona quick-reference,
  product → scope map, RBAC summary, compliance terminology.
- **`docs/exxat-ds/multi-product-routing-pattern.md`** — URL roots, switcher
  behaviour, custom product suffix slugs.
- **`docs/exxat-ds/registering-a-product.md`** — `defineProduct()` for tenant
  products (do **not** fork framework shims).

Full agent-context corpus (personas, expert-agent RBAC table, domain.md):
GitHub **`ExxatDesign/Exxat-DS-Workspace`** → `docs/exxat-ds/agent-context/`.

## Source of truth: the runtime selectors

- **Product** — ids exposed by `components/product-switcher.tsx`:
  `exxat-prism`, `exxat-one-schools`, `exxat-one-sites`, `exxat-custom`.
- **Scope** — school > program (Prism, One — Schools, Custom) or
  brand > site > location (One — Sites).

## MUST

1. **Declare three lines in every design brief** (between `User & frequency:` and `Job-to-be-done:`):

   ```
   Product: <exxat-prism | exxat-one-schools | exxat-one-sites | exxat-custom>
   Scope: <school > program | brand > site > location>
   Persona: <heading from exxat-domain-context skill / personas.md>
   ```

2. **Persona** must match an existing archetype — do not invent personas in consumer apps.

3. **Custom products** use **suffix URL slugs** (`/assessment/dashboard`), not `/custom/*`.
   Persistence lives in `customProducts[]` via `@exxatdesignux/product-framework`.

## See also

- **`exxat-product-routing.mdc`**
- **`exxat-ux-discovery-protocol.mdc`**