bunq Greece Open Banking API Access | Secure Sync

Reaching your bunq accounts in Greece no longer means wrestling with sandbox registrations or self-signed certificates. open-banking.io gives you a single, private doorway to more than 2,600 European banks — bunq included — where every balance and transaction is decrypted on your own device with a key that never leaves it. You bring the passphrase; the platform only ever holds your public key, so nobody but you can read what syncs in.

bunq supports both personal and business account types here, and a single approval keeps data flowing for up to 180 days before you renew. bunq does not publish a fixed BIC for this connection, so none is required — you simply select the bank by name.

How to connect bunq

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

  1. Create your open-banking.io account and set an encryption passphrase — your cryptographic keys are generated locally on your device at this moment.
  2. Open the dashboard, choose bunq from the bank list, and pick personal or business.
  3. You are redirected to bunq's own secure login, where you approve access under PSD2 consent — your credentials are only ever entered on bunq's site.
  4. Once approved, your bunq accounts sync straight into the dashboard, ready to view.

That consent stays valid for as long as 180 days, after which a quick re-approval renews it.

Access your data

Want to pull bunq data into your own tools? That is an optional step you take after connecting. On the Developers page, generate an API key and export a credentials.json — it bundles the API key together with your private decryption key. From there the CLI (openbanking accounts, openbanking transactions, openbanking sync), an SDK, or the REST API all work. Requests carry the X-Api-Key header, and every response is decrypted locally with your key. The key alone returns only ciphertext — readable data exists only on your machine.

All of this runs for roughly EUR 3 per month, with no certificate paperwork.

Do I need a developer account to use bunq?

No. Connecting and viewing bunq accounts is done in the dashboard. API keys are only for programmatic reading afterward.

Can open-banking.io see my bunq transactions?

No. The service is zero-knowledge — it stores only your public key, so decryption happens solely on your device.

How often do I re-approve bunq access?

At least every 180 days, the PSD2 maximum. Renewing takes a moment via bunq's consent screen.

Start connecting bunq at open-banking.io.