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# createCartMetafield

GraphQL MUTATION

Creates a metafield for cart object.

Reference: https://docs.bigcommerce.com/developer/api-reference/graphql/storefront/mutations/cart/create-cart-metafield

## GraphQL Schema

```graphql
mutation ExampleMutation($input: CreateCartMetafieldInput!) {
  cart {
    createCartMetafield(input: $input) {
      metafield {
        id
        entityId
        key
        value
        description
      }
      errors
    }
  }
}
```

## Variables

```json
{
  "input": {
    "cartEntityId": "example",
    "data": {
      "key": "example",
      "value": "example"
    }
  }
}
```