flecks/website/docs/configuration.mdx

---
title: Configuration
description: Configure `build/flecks.yml` and your application.
---

# Configuration

You have a flecks application! ...but it doesn't do much. By default, your application will have
only two flecks:
`@flecks/core` and `@flecks/server`. Your `build/flecks.yml` file will look like this:

```yml title="build/flecks.yml"
'@flecks/core': {}
'@flecks/server': {}
```

Each fleck may have configuration that can be set through `build/flecks.yml`.
For a deep dive of configurable core flecks, see
[the generated configuration page](/docs/flecks/@flecks/dox/config).

## `build/flecks.yml`

Your flecks application stores its build configuration in a directory located at `build`. By
default, there is a single file located there: `flecks.yml`. This is where all the individual
flecks are configured.

Your application's ID is configured at the `id` key of `@flecks/core`'s configuration:

```yml title="build/flecks.yml"
// highlight-start
'@flecks/core':
  id: 'hello-world'
// highlight-end
'@flecks/server': {}
```

Notice that the ID was set automatically by the app creation utility.

## Moving forward

In the next section, we'll look at how to create a fleck.