> For the complete documentation index, see [llms.txt](https://broadcast.presidiocreative.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://broadcast.presidiocreative.com/overlay/cart-drawer.md).
# Cart drawer
The **Cart drawer** is a slide-out panel that provides customers with a seamless, real-time view of their cart contents without leaving the page. It enhances the shopping experience by keeping users engaged while offering features like product upsells, custom messages, notes, shipping estimates, and checkout buttons—all configurable through blocks.
This section is displayed in the aside group and is highly customizable through its settings and block options.
Each block can be added once unless noted otherwise. All blocks support optional pinning to the bottom of the drawer.
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:
```
GET https://broadcast.presidiocreative.com/overlay/cart-drawer.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.