Sparkasse Dieburg API Access & Open Banking Data

Sparkasse Dieburg holds your everyday banking in Hessen, but pulling those balances and transactions into your own tools normally means chasing an eIDAS certificate and a PSD2 licence. open-banking.io removes that hurdle. It is a certificate-free bridge to 2,600+ European banks that lets you reach your Sparkasse Dieburg accounts (BIC HELADEF1DIE) — both business and personal — without becoming a licensed provider yourself.

The design is zero-knowledge from the start. When you sign up you set an encryption passphrase, and the keys are generated on your own device. open-banking.io stores only your public key, so its servers can never read or decrypt what flows through them. Every balance and statement is unlocked locally, by you.

How to connect Sparkasse Dieburg

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

  1. Create your open-banking.io account and set your encryption passphrase (your private key stays on your device).
  2. In the dashboard, search for Sparkasse Dieburg and choose the account type you need — business or personal.
  3. You are redirected to Sparkasse Dieburg's own secure login, where you approve access under PSD2. Your credentials are only ever entered on the bank's site.
  4. Sparkasse Dieburg confirms the consent, which lasts up to 180 days, after which you simply re-approve.
  5. Your accounts sync back into the dashboard, ready to view.

Access your data

Reading the data programmatically is an optional developer step that comes after the connection exists. Open 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 — they never create one. Without your private key, an API key alone returns nothing but ciphertext.

At around EUR 3/month, it is a low-cost way to keep Sparkasse Dieburg data in your own scripts, dashboards, or accounting flow.

FAQ

Do I need a PSD2 certificate for Sparkasse Dieburg?

No. open-banking.io is certificate-free — you approve access on Sparkasse Dieburg's own consent screen and never handle eIDAS certificates.

Can open-banking.io see my Sparkasse Dieburg transactions?

No. It holds only your public key. Data is decrypted locally with the private key that never leaves your device.

How long does access last?

Sparkasse Dieburg grants consent for up to 180 days. When it expires, re-approve through the dashboard to keep syncing.

Get started at open-banking.io.