> For the complete documentation index, see [llms.txt](https://docs.nrnagents.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nrnagents.ai/overview/installation-and-setup.md).

# Installation & Setup

## Installation

Methods for installing the package differs for each game engine. For games building browser games (using Javascript), you can install the package as follows:

```bash
npm install nrn-agents
```

For studios that use Unity or Unreal engine, please directly message an NRN team member to get access to the package. 

## Setup

In order to start using the SDK, you will need to set your `apiKey` and `gameId` as static attributes on the `AgentFactory` class (in Javascript) or `ModelWrapper` class (in C#). Each `apiKey` only works for a specific `gameId`.

{% tabs %}
{% tab title="Javascript" %}

```javascript
const { AgentFactory } = require('nrn-agents');

AgentFactory.setApiKey("my-api-key");
AgentFactory.setGameId("my-game-id");
```

{% endtab %}

{% tab title="C# - Unity" %}

```csharp
using ArcAgents.MachineLearning;

ModelWrapper.SetApiKey("my-api-key");
ModelWrapper.SetGameId("your-game-id");
```

{% endtab %}
{% endtabs %}

Now that you have your `apiKey` and `gameId` set, every HTTP request you make to the NRN Agents server will automatically use it.

## Additional Files

In order for the NRN Agents SDK to know how to communicate with a game, we need to add 2 files. These files will define the [state space](/getting-started/state-space.md) and [action space](/getting-started/action-space.md), which we begin to discuss in the [basic integration](/getting-started/basic-integration.md) section.

### Javascript Structure

It is advised that game studios make an `nrn-integration` folder inside their `helpers` folder. Inside this folder, we need to add the files to define the state and action space.

```
.
└── src/
    └── helpers/
        └── nrn-integration/
            ├── nrn-state-space.js
            └── nrn-action-space.js
```

### Unity Structure

It is advised that game studios make an `NrnIntegration` folder inside the`Script` folder. Inside this folder, we need to add the files to define the state and action space.

```
.
└── Assets/
    └── Scripts/
        └── NrnIntegration/
            ├── NrnStateSpace.cs
            └── NrnActionSpace.cs
```

### Unreal Structure

It is advised that game studios make an `NrnIntegration` folder inside the folder where they have all their game code. Inside this folder, we need to add the files to define the state and action space.

```
.
└── Source/
    └── Game/
        └── NrnIntegration/
            ├── NrnStateSpace.cpp
            ├── NrnStateSpace.h
            ├── NrnActionSpace.cpp
            └── NrnActionSpace.h
```