Only limited account data is available via the API for security reasons. If you request the endpoint https://api.digitalocean.com/v2/account you should receive a response with data like that shown in the example below.

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

You can find details on this API endpoint here.