## Catalog
Catalog docs cover browse surfaces, categories, search, filters, product cards, detail pages, availability language, and seller context.
{% figure src="/docs-images/gitbook-products-catalog.png" alt="GitBook catalog product docs page" caption="The catalog product guide gives readers a stable public reference for browse, filter, and product-detail behavior before they enter a buyer-facing surface." /%}
## What to document
Explain how readers move from discovery to product detail, which category and filter controls matter, how unavailable inventory is represented, and where product pages differ for signed-in versus anonymous readers. Link to narrower docs when search, ranking, or seller presentation becomes deep enough to deserve its own page.
## Browser evidence
Include screenshots for catalog browse, filter states, product cards, and product detail moments where those surfaces are stable enough to serve as docs references.
## Source of truth
Confirm product-listing language against workflow specs, shared schema, and the current website or buyer-facing routes before publishing behavior claims.