# POS Cart Attributes

> Merchant documentation for POS Cart Attributes, a Shopify app that captures cart-level and line-item attributes at the Point of Sale.

POS Cart Attributes is built by [K2 Digital](https://k2.digital/). Support: [tech@k2.digital](mailto:tech@k2.digital).

## Start here

- [Shopify App Store listing](https://apps.shopify.com/pos-cart-attributes): Install POS Cart Attributes (AttrCart).
- [Documentation hub](https://pos-cart-attributes.k2.digital/docs/): Entry point with links to all guides.
- [English home](https://pos-cart-attributes.k2.digital/docs/en/): Overview, quick start, and guide index for merchants.

## Guides

- [Setup](https://pos-cart-attributes.k2.digital/docs/en/setup/): Install the app, create Shop metafields, and add the smart-grid tile.
- [Staff guide](https://pos-cart-attributes.k2.digital/docs/en/usage/): How staff add cart-level and line-item attributes at checkout.
- [Tutorials](https://pos-cart-attributes.k2.digital/docs/en/tutorials/): Step-by-step screenshots and setup video walkthrough.
- [Troubleshooting](https://pos-cart-attributes.k2.digital/docs/en/troubleshooting/): Fix empty key lists, load errors, and missing attributes on orders.

## Support and legal

- [Support](https://pos-cart-attributes.k2.digital/docs/en/support/): Contact K2 Digital; free Shopify advice for POS Cart Attributes or general questions.
- [Privacy policy](https://pos-cart-attributes.k2.digital/docs/en/privacy/): How POS Cart Attributes handles merchant and order data.

## Optional

- [robots.txt](https://pos-cart-attributes.k2.digital/robots.txt): Crawler rules for search engines (Allow `/docs/`, sitemap link).
- [llms.txt](https://pos-cart-attributes.k2.digital/llms.txt): This file — curated doc index for LLMs ([llms.txt spec](https://llmstxt.org/)).
- [Sitemap](https://pos-cart-attributes.k2.digital/docs/sitemap-index.xml): Full list of documentation URLs for crawlers.