bunq Slovenia API Access & Open Banking Data

Managing your bunq accounts in Slovenia becomes far simpler when your balances and transactions live in one place you fully control. open-banking.io links to bunq (Slovenia) under PSD2, covering both personal and business accounts, and streams the data into a dashboard where only you hold the key to read it. There is no BIC required for bunq here, no eIDAS certificate to obtain, and no bank-provided developer sandbox to wrestle with — just a clean, standards-based connection.

What sets the service apart is its zero-knowledge design. Encryption keys are generated on your own device from a passphrase you choose, so the servers only ever hold your public key. Even while your bunq data syncs and is stored, open-banking.io cannot decrypt it — the plaintext only ever exists locally, on hardware you own.

How to connect bunq

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

  1. Sign up for open-banking.io and set your encryption passphrase; your private key is created locally in your browser and never leaves your device.
  2. In the dashboard, choose bunq (Slovenia) and select the account type you want to link — personal or business.
  3. You are redirected to bunq's own secure login, where you approve access on the bank's consent screen. This PSD2 authorisation lasts up to 180 days before you renew it.
  4. Your bunq accounts and transactions then sync straight into your dashboard.

Access your data

Reading bunq data programmatically is an optional step for developers, taken only after the connection above exists. 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. Requests authenticate with the X-Api-Key header, and every response is decrypted locally with your own key. An API key on its own returns only ciphertext — without your private key, nobody, including open-banking.io, can read it.

All of this runs for roughly EUR 3 per month, with access to 2,600+ banks across the EU and UK.

FAQ

Do I need a certificate or BIC to connect bunq?

No. bunq (Slovenia) has no BIC listed here, and open-banking.io is certificate-free — you just approve access on bunq's own login screen.

Can open-banking.io read my bunq transactions?

No. The service is zero-knowledge and holds only your public key; decryption happens locally with a key only you possess.

Up to 180 days per PSD2 authorisation, after which you re-approve access on bunq's consent screen.

Ready to start? Visit open-banking.io.