> For the complete documentation index, see [llms.txt](https://kb.heathen.group/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kb.heathen.group/old-kb/old-toolkit-for-steamworks/unity/legacy/quick-start-guide/api-initialization.md).

# API Initialization

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## Introduction

Initialize Steam API with Heathen's API wrapper. This is the simplest method in terms of steps to perform but requires the most understanding and code from you while also giving you the most amount of control over the process.

Simply use the [API.App.Client.Initialize(...)](/old-kb/old-toolkit-for-steamworks/unity/api-extensions/app.client.md#initialize) or the [API.App.Server.Initialize(...)](/old-kb/old-toolkit-for-steamworks/unity/api-extensions/app.server.md#initialize) method. For client builds you would obviously use the Client version and for Server builds you use the server version. The articles linked for each will explain each method in more detail. 

## Steam Game Server

When working with the Steam Game Server API there are two stages to making the API ready for use.

1. Initialize the Steam API ... which is done via the [API.App.Server.Initialize(...)](/old-kb/old-toolkit-for-steamworks/unity/api-extensions/app.server.md#initialize) method
2. Log the server on ... which is done via the [API.App.Server.LogOn()](/old-kb/old-toolkit-for-steamworks/unity/api-extensions/app.server.md#logon) method

Note that you can configure automatic logon in the [Steam Game Server Configuraiton](/old-kb/old-toolkit-for-steamworks/unity/objects/classes/steam-game-server-configuration.md) object you pass into the Initialize method. This will instruct our system to "log on" as soon as initialization is complete.


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