> For the complete documentation index, see [llms.txt](https://blockhouse-app.gitbook.io/blockhouse/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://blockhouse-app.gitbook.io/blockhouse/fix-api/about-fix-api.md).

# About FIX API

## Introduction

Welcome to the Blockhouse FIX (Financial Information eXchange) API! The purpose of this document is to show how the FIX messaging protocol can be used to place orders, receive order updates and trades, replace orders and cancel orders.

### Overview

Our API is based on FIX 4.2 specification. Please reach out to our support for FIX credentials.