# CartInput

Input for creating a new cart.

## Input Definition

```graphql
input CartInput {
  lines: [CartLineInput]
  buyerIdentity: BuyerIdentityInput
}
```

## Fields

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| lines | [CartLineInput] | No | A list of merchandise lines to add to the cart |
| buyerIdentity | BuyerIdentityInput | No | The buyer identity associated with the cart |

## Example

```graphql
mutation CreateCart {
  createCart(input: {
    lines: [
      {
        merchandiseId: 12345
        quantity: 2
      }
    ]
    buyerIdentity: {
      email: "customer@example.com"
      countryCode: "US"
    }
  }) {
    cart {
      id
      lines {
        id
        quantity
      }
    }
  }
}
```

## Related Types

- [CartLineInput](/docs/api/cart-line-input)
- [BuyerIdentityInput](/docs/api/buyer-identity-input)