# Defining custom props

If existing props don’t support the conditional styling you need, you can add custom props and use them in `variants` or `compoundVariants` as needed.

{% code title="vueless.config.{js,ts}" %}

```js
export default {
  component: {
    UButton: {
      props: {
        /* 
         * Boolean prop example.
         */
        featured: {
          type: "boolean",
          required: false,
          description: "Set button featured." 
        },
        
        /* 
         * Enum (string) prop example.
         */
        shape: {
          type: "string",
          values: ["circle", "parallelogram", "square"],
          default: "square",
          required: true,
          description: "Set button shape."
        }
      }
    }
  }
};
```

{% endcode %}

### Prop settings

<table><thead><tr><th width="138.55859375">key</th><th width="145.4765625">default</th><th>Description</th></tr></thead><tbody><tr><td>type</td><td>"string"</td><td>Supported values: "string", "number", "boolean".</td></tr><tr><td>values</td><td>[]</td><td>Limits possible prop values (union type in TS).</td></tr><tr><td>default</td><td>""</td><td>Defines default value.</td></tr><tr><td>required</td><td>false</td><td>Makes props required.</td></tr><tr><td>description</td><td>""</td><td>Adds props description in Storybook docs.</td></tr><tr><td>ignore</td><td>false</td><td>Hides prop in Storybook docs.</td></tr></tbody></table>

{% hint style="info" %}
All key are optional.
{% endhint %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.vueless.com/component-customization/defining-custom-props.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.