Sydjysk Sparekasse API Access & Open Banking Data

Sydjysk Sparekasse serves customers across southern Jutland, and if you want your transactions in one place — a budgeting tool, an accounting sync, or a custom script — open-banking.io gives you a certificate-free path to that data. There are no eIDAS certificates to buy and no bank sandbox to register with. You approve access once, and your accounts flow into a dashboard where only you hold the decryption key.

open-banking.io covers 2,600+ EU and UK banks under PSD2, including Sydjysk Sparekasse for both business and personal account types. A single approval stays valid for up to 180 days before you re-confirm, and there is no published BIC for this savings bank, so selection happens by name rather than by code.

How to connect Sydjysk Sparekasse

Connecting happens entirely inside the open-banking.io dashboard — not through any API call or key:

  1. Sign up for open-banking.io and set your encryption passphrase. Your key pair is generated locally on your own device.
  2. In the dashboard, choose Sydjysk Sparekasse and pick the account type you need (business or personal).
  3. You are redirected to Sydjysk Sparekasse's own secure login and consent screen, where you approve access directly with the bank.
  4. Your accounts sync back into the dashboard, ready to view.

That is the whole flow. You never hand credentials to open-banking.io, and no code is involved in linking the bank.

Access your data

Once Sydjysk Sparekasse is connected, developers can optionally read it programmatically. On the Developers page, create an API key and export a credentials.json — this bundles the API key with your private decryption key. From there use the CLI (openbanking accounts, openbanking transactions, openbanking sync), an SDK, or the REST API. Every request carries the X-Api-Key header, and each response is decrypted locally with your own key. The API key alone only ever returns ciphertext.

That is the point of the zero-knowledge design: open-banking.io stores only your public key and can never read your balances. Pricing is roughly EUR 3/month.

Do I need an eIDAS certificate?

No. open-banking.io is certificate-free — you approve access on Sydjysk Sparekasse's consent screen instead.

Can I connect through the CLI?

No. Connecting only happens in the dashboard. The CLI and SDK read and sync existing connections; they cannot link a new bank.

Up to 180 days, after which you re-approve on the bank's screen.

Start at open-banking.io.