You can view the billing related information here: https://cloud.digitalocean.com/settings/billing.

Using the API, you can only get basic account information such as the droplet limit and the email address:

• https://developers.digitalocean.com/documentation/v2/#get-user-information

{
  "account": {
    "droplet_limit": 25,
    "email": "sammy@digitalocean.com",
    "uuid": "b6fr89dbf6d9156cace5f3c78dc9851d957381ef",
    "email_verified": true
  }
}

+1