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

# Introduction

> Learn how to configure your agent in YAML

## Overview

Agents are configured using a YAML file. The file should define:

* The infrastructure to use (e.g., an EC2 instance)
* Actions to perform within the infrastructure (e.g., installing custom Linux packages)
* Your project's dependencies (i.e., Python packages)
* Your project's entrypoint (i.e., what command to use to actually execute your project)
* Environment variables
* Files to download upon the project's completion

## Example

Here's an example configuration file:

```yaml alto.yml theme={null}
my_cloud_agent:
  infra:
    type: ec2  
    instance_type: t2.micro
    ami_image: ami-0889a44b331db0194
  requirements: requirements.txt
  entrypoint:
    type: script
    cmd: python <script name>.py --arg1 VALUE1
  env:
    ENV_VAR1: "{{ env('ENV_VAR1') }}"
```

Let's break this down next.