Use `describeCurrentCustomer
` to add custom attributes to the Customer object of the customer logged into the chat.
## Describe Customer attributes
A list of all standard Customer klass attributes for `describeCurrentCustomer
`:
Name | Type | Description |
`phone ` | String | The customer's phone number as a string |
`phones ` | [String] | An array of phone numbers associated with this customer |
`email ` | String | The customer's email as a string |
`emails ` | [String] | An array of email addresses associated with this customer |
`facebook ` | String | The customer's Facebook name as a string |
`instagram ` | String | The customer's Instagram account name as a string |
`twitter ` | String | The customer's Twitter account handle as a string |
`linkedin ` | String | The customer's LinkedIn name as a string |
custom attribute | See [Use custom attribute values](🔗). | See [Use custom attribute values](🔗). |
## Use custom attributes values
You can also send the SDK custom attribute values for custom attributes enabled in Kustomer.
**Always** use the attribute name instead of the Display Name listed in the Klasses editor (**Settings > Platform > Klasses**) in Kustomer. The attribute name will always be formatted in camelCase or PascalCase without spaces and also describes the data type for the attribute.
For example, if a custom attribute has a Display Name of "Avg Sat Score" and has a number data type, then the name may appear as `AvgSatScoreNum
`. You would use `AvgSatScoreNum
`, the system name for the custom attribute, with the SDK.
Activate custom attributes for the Customer klass
To update custom attributes, ensure you have the custom attribute key-value pairs activated for the Customer klass on the Kustomer platform. To edit or view custom attributes for the Customer klass, go to **Settings** and select** Platform > Klasses > Customer**.
To learn more, see [Define custom attribute in Kustomer](🔗) in the Kustomer Help Center.

Always send in the system name for custom attributes and check that the attribute is activated in the Klasses editor.