Eine API.
Unendliche Möglichkeiten.

# datamat Webservices – Python Beispiel
import requests

token = 'ihr-bearer-token'
r = requests.get(
    'https://webservice.datamat-software.de/api/v1/fints/{bankcode}/balance/{accountnumber}',
    headers={
        'Authorization': f'Bearer {token}',
        'X-DWS-LANGUAGE-ISO631': 'de',
    },
    json={'iban': 'DE89370400440532013000'}
)
data = r.json()
print(data['data']['saldo'])  # 4250.00

// datamat Webservices – JavaScript Beispiel
const token = 'ihr-bearer-token';
const res = await fetch(
  'https://webservice.datamat-software.de/api/v1/fints/{bankcode}/balance/{accountnumber}',
  {
    method: 'GET',
    headers: {
      'Authorization': `Bearer ${token}`,
      'X-DWS-LANGUAGE-ISO631': 'de',
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({ iban: 'DE89370400440532013000' }),
  }
);
const { data } = await res.json();
console.log(data.saldo); // 4250.00

// datamat Webservices – C# Beispiel
var client = new HttpClient();
client.DefaultRequestHeaders.Authorization =
    new AuthenticationHeaderValue("Bearer", "ihr-bearer-token");
client.DefaultRequestHeaders.Add("X-DWS-LANGUAGE-ISO631", "de");

var payload = new StringContent(
    JsonSerializer.Serialize(new { iban = "DE89370400440532013000" }),
    Encoding.UTF8, "application/json");

var response = await client.GetAsync(
    "https://webservice.datamat-software.de/api/v1/fints/{bankcode}/balance/{accountnumber}");
var json = await response.Content.ReadAsStringAsync();