# minCodePoints

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

Creates a min [code points](https://developer.mozilla.org/en-US/docs/Glossary/Code_point) validation action.

```ts
const Action = v.minCodePoints<TInput, TRequirement, TMessage>(
  requirement,
  message
);
```

## Generics

- `TInput` `extends string`
- `TRequirement` `extends number`
- `TMessage` `extends ErrorMessage<MinCodePointsIssue<TInput, TRequirement>> | undefined`

## Parameters

- `requirement` `TRequirement`
- `message` `TMessage`

### Explanation

With `minCodePoints` you can validate the minimum number of Unicode code points in a string. Code points are not the same as UTF-16 code units or user-perceived characters (graphemes): `😀` consists of 2 UTF-16 code units, 1 code point, and 1 grapheme, while `👨🏽‍👩🏽` consists of 5 code points but 1 grapheme. If the number of code points is below the `requirement`, you can use `message` to customize the error message.

> Hint: This action can help enforce minimum password length requirements measured in Unicode code points. [NIST SP 800-63B requires us to count the length of a password in code points.](https://pages.nist.gov/800-63-4/sp800-63b.html#passwordver)

## Returns

- `Action` `MinCodePointsAction<TInput, TRequirement, TMessage>`

## Examples

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

### Min code points schema

Schema to validate a string with a minimum of 8 code points.

```ts
const MinCodePointsSchema = v.pipe(
  v.string(),
  v.minCodePoints(8, 'The string must contain at least 8 code points.')
);
```

## Related

The following APIs can be combined with `minCodePoints`.

### Schemas

[`any`](/api/any.md), [`custom`](/api/custom.md), [`string`](/api/string.md)

### Methods

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

### Actions

[`minGraphemes`](/api/minGraphemes.md), [`minLength`](/api/minLength.md)

### Utils

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