Sparkasse Wolfach API Access & Open Banking Data

Pulling your own account data out of Sparkasse Wolfach shouldn't mean wrestling with eIDAS certificates or a bank sandbox. open-banking.io gives you a single dashboard to reach Sparkasse Wolfach (BIC SOLADES1WOF) under PSD2, covering both business and personal accounts. You approve access once, and your balances and transactions flow into a view only you can decrypt.

Because it's zero-knowledge, the service never holds the key to your data. Encryption keys are generated on your own device, and open-banking.io stores only your public key — so even our servers see nothing but ciphertext.

How to connect Sparkasse Wolfach

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 an open-banking.io account.
  2. Set your encryption passphrase. Your private decryption key is generated locally, on your device.
  3. Pick Sparkasse Wolfach in the dashboard and choose the account type you need — business or personal.
  4. Approve on Sparkasse Wolfach's own login. You're redirected to the bank's secure consent screen, where you authenticate directly with Sparkasse Wolfach and grant access.
  5. Your accounts sync back into your dashboard, ready to view.

The PSD2 consent you grant lasts up to 180 days, after which you simply re-approve on the bank's screen to keep the connection live.

Access your data

Once Sparkasse Wolfach is connected, reading the data programmatically is an optional developer step. On the Developers page, create an API key and export a credentials.json — this bundles the API key together with your private decryption key. From there you can use the CLI (openbanking accounts, openbanking transactions, openbanking sync), an SDK, or the REST API.

Requests authenticate with the X-Api-Key header, and every response is decrypted locally with your own key. An API key on its own only ever returns ciphertext — without your private key, there is nothing readable to see. The CLI and SDK only read and sync connections you've already made in the dashboard; they never establish the bank link themselves.

All of this runs at roughly EUR 3/month, with no certificates to buy or maintain.

Does open-banking.io ever see my Sparkasse Wolfach data?

No. Data is decrypted on your device with a key only you hold. Our servers keep only your public key and encrypted blobs.

Can I connect both business and personal accounts?

Yes. Sparkasse Wolfach supports both account types — choose the one you want when picking the bank in the dashboard, and connect each separately.

How long does access last before I re-authorise?

Up to 180 days per consent. When it expires, re-approve on Sparkasse Wolfach's own consent screen to resume syncing.

Start at open-banking.io.