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

# Catalogs

> Store product or content rows for personalization and selections.

Catalogs hold tabular data (items with an `id` and custom fields) per account. Create catalogs from the dashboard using your e-commerce products, or manage catalogs and items through the Storefront API. Define **selections** with filters, sort, and a results limit.

## Limits

* Storage: 500 MB total catalog item payload per account.
* Up to 1000 catalogs per account.
* Selections: up to 30 per catalog, 10 filters each, results limit 1–50.