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

# Welcome to Coinbase Derivatives Exchange

Welcome to [Coinbase Derivatives Exchange](https://www.coinbase.com/derivatives) (CDE) documentation. CDE provides REST, FIX, SBE, and UDP APIs:

* [REST](/api-reference/derivatives-api/rest-api/introduction) (REST API).
* [FIX](/derivatives/fix/overview) (FIX4.4 with tag-value encoding).
* [SBE](/derivatives/sbe/overview) (Simple Binary Encoding).
* [UDP](/derivatives/udp/overview) (User Datagram Protocol) multicast market data.

<Warning>
  The guide is not intended to serve as a full-fledged specification of the FIX protocol. Refer to the official FIX specifications at [https://www.fixtrading.org](https://www.fixtrading.org/online-specification/) for additional details.
</Warning>