> ## Documentation Index
> Fetch the complete documentation index at: https://docs.solya.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Cards (master data)

> Per-entity summaries for products, brands, shops, collections, and suppliers.

**Cards** give you a per-entity view of your catalog with key performance metrics. Each
card type has a **list view** (browse and compare) and a **detail view** (one entity in
depth).

## Card types

| Card            | Highlights                                                                       |
| --------------- | -------------------------------------------------------------------------------- |
| **Products**    | Stock, average price, sizes available, monthly sales, revenue, margin            |
| **Brands**      | Products in stock, stock value, monthly sales, variant/product/shop counts, tags |
| **Stores**      | City/country, products in stock, merchandise value, monthly sales                |
| **Collections** | Collection-level rollups                                                         |
| **Suppliers**   | Supplier overview                                                                |

## Read-only by design

Catalog data on cards (names, attributes, prices, stock, sales) is **ingested** from your
POS systems and is **read-only** in the app — it's refreshed by the data pipeline, not
edited here. The things you *do* create in Solya (plans, rules, alerts, tags) live in
their own sections. (Tags can be attached to entities; see
[Tags](/en/automation/tags).)

<Note>
  Card metrics are computed over the gold layer for the selected period and respect your
  shop scope.
</Note>