Basisbank API Access — Open Banking Data (Denmark)

Reaching your Basisbank data no longer means wrestling with certificates, sandbox registrations, or a bank-run developer portal. open-banking.io gives you PSD2 access to Basisbank in Denmark alongside 2,600+ other EU and UK banks, with one flat subscription and one simple rule: only you can read your data. Everything that arrives from Basisbank is decrypted locally with a key that never leaves your device.

Basisbank covers both business and personal account types. It has no published BIC, so there is nothing extra to look up — you select Basisbank in the dashboard and go. Each consent you grant lasts up to 180 days before Basisbank asks you to re-approve, keeping you in control of how long access stays live.

How to connect Basisbank

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 open-banking.io and set an encryption passphrase. Your keys are generated right there on your own device.
  2. Open the dashboard and pick Basisbank, then choose whether you're linking a business or personal account.
  3. You're redirected to Basisbank's own secure login, where you approve access under PSD2 — your credentials only ever touch the bank.
  4. Your accounts and transactions sync back into the dashboard, ready to view.

Access your data

Once Basisbank is connected, reading the data programmatically is an optional developer step. From the Developers page, create an API key and export a credentials.json — this bundles your API key together with your private decryption key. You can then 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. Without that private key, an API key alone returns only ciphertext — which is exactly how zero-knowledge is meant to work.

All of this runs for around EUR 3/month, with no eIDAS certificate and no per-bank onboarding.

Does Basisbank have a BIC I need to enter?

No. Basisbank has no published BIC on open-banking.io — just select it in the dashboard.

Can I connect a Basisbank business account?

Yes. Both business and personal Basisbank accounts are supported.

Can open-banking.io see my Basisbank transactions?

No. The service is zero-knowledge and stores only your public key, so data is decrypted only on your device.

Start linking Basisbank at open-banking.io.