> ## Documentation Index
> Fetch the complete documentation index at: https://developers.mageloyalty.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Get birthday

> Get a customer's date of birth.

Get the customer's date of birth. The `identifier` can be a Shopify customer ID or email.

## Response

```json theme={null}
{
  "data": {
    "type": "customer_birthday",
    "id": "6789012345",
    "attributes": {
      "shopify_customer_id": "6789012345",
      "email": "jane@example.com",
      "date_of_birth": "1990-05-15T00:00:00.000Z"
    }
  }
}
```

`date_of_birth` will be `null` if the customer has not provided their date of birth.

## Errors

| Status | Scenario           |
| ------ | ------------------ |
| `404`  | Customer not found |