> ## Documentation Index
> Fetch the complete documentation index at: https://dexbuilder.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Order Book

The order book shows active buy and sell orders in real time and is the primary view for understanding market depth and nearby liquidity.

* **Price levels:** asks and bids are displayed by price level, usually with the main levels closest to the market.
* **Order value:** shows the total order value at a specific price level.
* **Cumulative amount / size:** shows the accumulated value or size through deeper levels.
* **Spread:** shows the difference between the best ask and best bid, including the percentage spread.
* **Depth visualization:** background bars visualize the relative depth available at each level.

## Interaction

* **Click a price:** fills the selected price into the order-entry panel.
* **Hover a level:** shows more detail, including average price, total asset amount, and USDT value.
* **Real-time updates:** the order book refreshes continuously to reflect the latest market state.


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.