# brand

> This document is the Markdown version of [valibot.dev/api/brand/](https://valibot.dev/api/brand/). For the complete documentation index, see [llms.txt](https://valibot.dev/llms.txt).

Creates a brand transformation action.

```ts
const Action = v.brand<TInput, TName>(name);
```

## Generics

- `TInput` `extends any`
- `TName` `extends BrandName`

## Parameters

- `name` `TName`

### Explanation

`brand` allows you to brand the output type of a schema with a `name`. This ensures that data can only be considered valid if it has been validated by a particular branded schema.

## Returns

- `Action` `BrandAction<TInput, TName>`

## Examples

The following examples show how `brand` can be used.

### Branded fruit schema

Schema to ensure that only a validated fruit is accepted.

```ts
// Create schema and infer output type
const FruitSchema = v.pipe(v.object({ name: v.string() }), v.brand('Fruit'));
type FruitOutput = v.InferOutput<typeof FruitSchema>;

// This works because output is branded
const apple: FruitOutput = v.parse(FruitSchema, { name: 'apple' });

// But this will result in a type error
const banana: FruitOutput = { name: 'banana' };
```

## Related

The following APIs can be combined with `brand`.

### Schemas

[`any`](/api/any.md), [`array`](/api/array.md), [`bigint`](/api/bigint.md), [`blob`](/api/blob.md), [`boolean`](/api/boolean.md), [`custom`](/api/custom.md), [`date`](/api/date.md), [`enum`](/api/enum.md), [`exactOptional`](/api/exactOptional.md), [`file`](/api/file.md), [`function`](/api/function.md), [`instance`](/api/instance.md), [`intersect`](/api/intersect.md), [`lazy`](/api/lazy.md), [`literal`](/api/literal.md), [`looseObject`](/api/looseObject.md), [`looseTuple`](/api/looseTuple.md), [`map`](/api/map.md), [`nan`](/api/nan.md), [`never`](/api/never.md), [`nonNullable`](/api/nonNullable.md), [`nonNullish`](/api/nonNullish.md), [`nonOptional`](/api/nonOptional.md), [`null`](/api/null.md), [`nullable`](/api/nullable.md), [`nullish`](/api/nullish.md), [`number`](/api/number.md), [`object`](/api/object.md), [`objectWithRest`](/api/objectWithRest.md), [`optional`](/api/optional.md), [`picklist`](/api/picklist.md), [`promise`](/api/promise.md), [`record`](/api/record.md), [`set`](/api/set.md), [`strictObject`](/api/strictObject.md), [`strictTuple`](/api/strictTuple.md), [`string`](/api/string.md), [`symbol`](/api/symbol.md), [`tuple`](/api/tuple.md), [`tupleWithRest`](/api/tupleWithRest.md), [`undefined`](/api/undefined.md), [`undefinedable`](/api/undefinedable.md), [`union`](/api/union.md), [`unknown`](/api/unknown.md), [`variant`](/api/variant.md), [`void`](/api/void.md)

### Methods

[`pipe`](/api/pipe.md)

### Utils

[`isOfKind`](/api/isOfKind.md), [`isOfType`](/api/isOfType.md)