Sparkasse Starkenburg API & Open Banking Access

Reaching your Sparkasse Starkenburg accounts programmatically no longer means chasing eIDAS certificates or building your own PSD2 stack. open-banking.io gives you a single dashboard to link the Heppenheim-based savings bank (BIC HELADEF1HEP) and pull your balances and transactions into one place — covering both business and personal accounts. Everything is decrypted on your own device with a key only you hold, so open-banking.io never sees your statements in the clear.

How to connect Sparkasse Starkenburg

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 an account and set your encryption passphrase. Your cryptographic keys are generated locally on your device, never on a server.
  2. In the dashboard, pick Sparkasse Starkenburg from the bank list and choose the account type you want to link — business or personal.
  3. You're redirected to Sparkasse Starkenburg's own secure login, where you approve access under PSD2. This consent lasts up to 180 days, after which you simply reauthorise.
  4. Your accounts sync back into the dashboard, ready to view.

Because approval takes place on the bank's own consent screen, your credentials stay between you and Sparkasse Starkenburg.

Access your data

Once a connection exists, developers can optionally read it programmatically. 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, 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. The CLI and SDK only read and sync connections you already made in the dashboard — there is no connect command.

This is the zero-knowledge, certificate-free model: open-banking.io holds only your public key, so a stolen API key alone returns nothing but ciphertext. Access to 2,600+ EU/UK banks runs about EUR 3/month.

Does open-banking.io store my banking password?

No. You authenticate directly on Sparkasse Starkenburg's login screen; open-banking.io never receives your online-banking credentials.

Yes. Sparkasse Starkenburg supports both account types — link each one separately from the dashboard.

PSD2 consent for Sparkasse Starkenburg lasts up to 180 days. When it expires, reauthorise in a few clicks to keep data flowing.

Start at open-banking.io.