> This page is for Afterpay Online Developer, version Main (default).
> For other versions, use one of these documentation indexes:
> - Main (default): https://developers.afterpay.com/afterpay-online-developer/main/llms.txt
> - v1: https://developers.afterpay.com/afterpay-online-developer/v-1/llms.txt
> - Chinese: https://developers.afterpay.com/afterpay-online-developer/chinese/llms.txt

> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://developers.afterpay.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://developers.afterpay.com/_mcp/server.

# Solidus

Solidus describes itself as a *free, open-source eCommerce framework for digitally-native brands, fast-growing online businesses and pragmatic developers*. It is based on the [Ruby on Rails](https://rubyonrails.org/) framework.

Click [here](https://guides.solidus.io/) for a detailed technical guide to Solidus. The pages in this section of the Afterpay guide describe how to integrate Solidus with Afterpay.

Click [here](https://github.com/nebulab/afterpay-ruby#readme) for the GitHub Readme file for the Ruby SDK for the Afterpay API.

> **Supported Countries**
>
> Afterpay is available for Stolidus merchants with a store in:
>
> * 🇺🇸   United States