Kreissparkasse Saarlouis API Access & Open Banking

Reaching your Kreissparkasse Saarlouis accounts programmatically usually means certificates, sandbox registrations and PSD2 paperwork. open-banking.io removes all of it. It links to Kreissparkasse Saarlouis (BIC KRSADE55XXX) through the regulated open-banking network and streams your balances and transactions into one dashboard — where the data is decrypted on your own device with a key nobody else holds.

Both business and personal accounts are supported, and a single consent stays valid for up to 180 days before Kreissparkasse Saarlouis asks you to re-approve.

How to connect Kreissparkasse Saarlouis

Connecting happens entirely inside the open-banking.io dashboard — there is no API call, code or key involved in this step.

  1. Sign up for open-banking.io and open the dashboard.
  2. Set your encryption passphrase. Your key pair is generated locally on your device; open-banking.io only ever sees your public key.
  3. Pick Kreissparkasse Saarlouis from the bank list and choose the account type — business or personal.
  4. Approve on Kreissparkasse Saarlouis's own login. You're redirected to the bank's secure PSD2 consent screen to authenticate and grant access. Your credentials are entered only at the bank.
  5. Your accounts sync back into the dashboard, ready to view.

Access your data

Reading the data programmatically is an optional developer step you take after connecting. From the Developers page, create an API key and export a credentials.json — it bundles the API key together with your private decryption key. Then use the CLI or an SDK:

openbanking accounts
openbanking transactions
openbanking sync

Every request sends your key in the X-Api-Key header, and each response is decrypted locally with your private key. The API key alone only ever returns ciphertext — without your key, there is nothing readable to hand over. There is no connect command; the CLI, SDK and REST API only read and sync connections you already approved in the dashboard.

This is what zero-knowledge means in practice: certificate-free, and structurally unable to read your Kreissparkasse Saarlouis data on the server. All of it runs for around EUR 3/month.

FAQ

Do I need a developer account with Kreissparkasse Saarlouis?

No. You approve access on the bank's own consent screen; open-banking.io handles the regulated connection for you.

How long does access last?

Up to 180 days per consent. After that Kreissparkasse Saarlouis prompts you to re-authorise from the dashboard.

Can open-banking.io see my transactions?

No. It stores only your public key, so data is decrypted solely on your device.

Start at https://open-banking.io.