Südwestbank Open Banking & API Access in Germany

Südwestbank AG serves customers across Baden-Württemberg with both business and personal accounts. If you want to pull your Südwestbank balances and transactions into one place — for accounting, cash-flow monitoring, or a custom app — open-banking.io gives you PSD2 access without certificates, without an eIDAS setup, and without ever handing your data to a third party in readable form.

Everything is decrypted locally with a key generated on your own device. open-banking.io stores only your public key, so its servers can never read your Südwestbank statements — this is genuine zero-knowledge access for roughly EUR 3 per month.

How to connect Südwestbank

Connecting happens entirely in 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 set your encryption passphrase. Your private and public keys are created right there on your device.
  2. In the dashboard, search for Südwestbank (BIC SWBSDESSXXX) and choose the account type you hold — business or personal.
  3. You are redirected to Südwestbank's own secure login to approve access. You grant PSD2 consent directly on the bank's screen, valid for up to 180 days before a simple renewal.
  4. Your Südwestbank accounts then sync into your dashboard, ready to view.

Access your data

Reading Südwestbank data programmatically is an optional developer step you take after connecting. From the Developers page, create an API key and export a credentials.json, which bundles that API key together with your private decryption key.

With it you can run the CLI — openbanking accounts, openbanking transactions, openbanking sync — or call the SDK and REST API. Every request carries your key in the X-Api-Key header, and every response is decrypted locally on your machine. The API key alone only ever returns ciphertext; without your private key, nobody — not even open-banking.io — can read a thing.

Do I need an eIDAS certificate for Südwestbank?

No. open-banking.io is certificate-free. Consent is granted directly on Südwestbank's login, so there is nothing to register or maintain.

Can the CLI connect my Südwestbank account?

No. The CLI and SDK only read and sync connections you already made in the dashboard — there is no connect command. Linking always happens on the bank's own consent screen.

Up to 180 days per PSD2 rules, for both business and personal accounts. You simply re-approve on Südwestbank's screen when it lapses.

Ready to start? Visit open-banking.io and connect Südwestbank in minutes.