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

# Order Books

An order book is a collection of offers for a specific pair of assets.

The [latest ledger](https://developers.stellar.org/docs/data/apis/horizon/api-reference/structure/consistency) known to Horizon is included as an HTTP header in the response.

Learn more about [order books](https://developers.stellar.org/docs/learn/glossary#decentralized-exchange).


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