Banque Transatlantique Open Banking & API Access

Banque Transatlantique (BIC CMCILUL1) is the Luxembourg private bank of the CIC group, serving expatriates and internationally mobile clients. With open-banking.io you can bring its account and transaction data into one dashboard — and, if you want, into your own scripts — without handling eIDAS certificates or building a PSD2 stack yourself.

The service is zero-knowledge: your encryption keys are generated on your own device, and open-banking.io only ever stores your public key. Everything you read is decrypted locally, so no third party (including us) can see your Banque Transatlantique balances. Both business and personal accounts are supported, and a single consent stays valid for up to 180 days before Banque Transatlantique asks you to re-approve.

How to connect Banque Transatlantique

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 your encryption passphrase. Your private key is created locally from it and never leaves your device.
  2. In the dashboard, search for Banque Transatlantique and choose the account type — business or personal.
  3. You are redirected to Banque Transatlantique's own secure login, where you approve access on the bank's PSD2 consent screen.
  4. Once approved, your accounts and transactions sync back into the dashboard automatically.

That's the whole flow: pick the bank, approve on the bank's side, and watch your data appear.

Access your data

Developers can optionally read the same data programmatically after the connection exists. On 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 you can use the CLI (openbanking accounts, openbanking transactions, openbanking sync), an SDK, or the REST API directly.

Every request carries the X-Api-Key header, and each response is decrypted locally with your own key. The API key alone returns only ciphertext — without your private key, the data stays unreadable, which is what keeps the whole system zero-knowledge. The CLI and SDK never connect a bank; they only read and refresh connections you already made in the dashboard.

All of this runs on the standard plan at roughly EUR 3/month.

Do I need a PSD2 certificate for Banque Transatlantique?

No. open-banking.io is certificate-free — you approve access directly on Banque Transatlantique's login page.

Can open-banking.io see my Banque Transatlantique data?

No. Only your public key is stored server-side; decryption happens on your device.

Up to 180 days, after which you re-approve on the bank's consent screen.

Start at open-banking.io.