Sydbank API Access & Open Banking | open-banking.io

Sydbank is one of Denmark's larger commercial banks, and open-banking.io lets you reach its account and transaction data without wrestling with PSD2 certificates or eIDAS onboarding. Whether you hold a business or a personal account, the workflow is the same: authorise once, then read your own data on your own terms. open-banking.io covers 2,600+ EU and UK banks, and every figure you retrieve is decrypted locally with a key that never leaves your device.

How to connect Sydbank

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 open-banking.io account.
  2. Set your encryption passphrase; your key pair is generated right there on your own device, so only you can later unlock the data.
  3. In the dashboard, pick Sydbank from the bank list and choose your account type — business or personal.
  4. You are redirected to Sydbank's own secure login, where you approve access on the bank's PSD2 consent screen.
  5. Your accounts sync back into the dashboard, ready to view.

Sydbank grants consent for up to 180 days, after which you simply repeat the approval to keep the connection live. Sydbank has no BIC listed in our reference data, but none is needed — the dashboard resolves the bank for you.

Access your data

Once Sydbank is connected, developers can optionally read the data 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 directly. Requests authenticate with the X-Api-Key header, and every response is decrypted locally with your own key. These tools only read and sync connections you already made in the dashboard — there is no connect command.

Because open-banking.io is zero-knowledge, its servers hold only your public key. Ciphertext is all they ever store; without your private key an API key alone returns nothing readable. That is the certificate-free, privacy-first design, and it runs at roughly EUR 3 per month.

FAQ

Do I need a PSD2 certificate to access Sydbank?

No. open-banking.io handles the regulated licensing. You approve access on Sydbank's consent screen and nothing more is required from you.

Can I connect a Sydbank business account?

Yes. Both business and personal Sydbank account types are supported; just select the one you want when picking the bank in the dashboard.

Up to 180 days per approval. When it expires, re-approve in the dashboard to continue syncing.

Ready to begin? Start at open-banking.io.