Møns Bank API Access & Open Banking Integration

Reaching Møns Bank account data no longer means wrestling with eIDAS certificates or a bespoke PSD2 gateway. open-banking.io gives you a single, certificate-free route to Denmark's Møns Bank alongside 2,600+ other EU and UK institutions — and every byte you retrieve is decrypted on your own machine with a key that never leaves it.

Møns Bank supports both business and personal account types through open-banking.io, and a single consent stays valid for up to 180 days before you re-authorise. There is no published BIC required on your side — you simply select the bank by name in the dashboard.

How to connect Møns Bank

Connecting happens entirely inside the open-banking.io web 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 cryptographic keys are generated locally on your device, so only you can ever unlock your data.
  3. In the dashboard, pick Møns Bank and choose your account type — business or personal.
  4. You are redirected to Møns Bank's own secure login, where you approve access under PSD2 consent on the bank's screens.
  5. Your approved accounts sync straight into your open-banking.io dashboard.

That's the whole flow. open-banking.io never sees your banking credentials, and its servers hold only your public key.

Access your data

Once Møns Bank is connected, developers can optionally read the data programmatically. Open the Developers page, create an API key, and export a credentials.json — this bundles your 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 each response is decrypted locally with your own key. Without that private key, an API key alone returns only ciphertext — which is exactly what zero-knowledge means.

All of this runs for roughly EUR 3/month.

Do I need an eIDAS certificate for Møns Bank?

No. open-banking.io is certificate-free — you authorise directly on Møns Bank's consent screen.

Up to 180 days, after which you re-approve access from your dashboard.

Can open-banking.io read my Møns Bank transactions?

No. Data is encrypted to a key held only by you and decrypted locally, so the service stores only your public key.

Start connecting Møns Bank at open-banking.io.