# Categories

A category is a classification for product listings, with specific attributes and constraints that products within the category must adhere to.

## Retrieve all categories

 - [GET /items/categories](https://developers.wallapop.com/apis/items/items/getcategories.md): Retrieve Wallaop's complete category hierarchy for items. This list will help you identify the categories that best classify the items you want to sell.

## Retrieve a category's attributes

 - [GET /items/categories/{id}/attributes](https://developers.wallapop.com/apis/items/items/getcategoryattributes.md): Returns the acceptable attributes for items categorized by category, including mandatory and optional attributes.

## Retrieve all categories

 - [GET /items/categories](https://developers.wallapop.com/apis/items/categories/getcategories.md): Retrieve Wallaop's complete category hierarchy for items. This list will help you identify the categories that best classify the items you want to sell.

## Retrieve a category's attributes

 - [GET /items/categories/{id}/attributes](https://developers.wallapop.com/apis/items/categories/getcategoryattributes.md): Returns the acceptable attributes for items categorized by category, including mandatory and optional attributes.