Banque Transatlantique open banking & API access

Banque Transatlantique in Belgium (BIC CMCIBEB1) serves private clients and businesses who value discretion — and open-banking.io lets you read those account balances and transactions on your own terms, without handing your credentials to anyone. There is no certificate to buy, no eIDAS setup, and no bank-side developer contract. You connect once through a secure consent screen, and from then on your data flows into a dashboard that only you can decrypt.

The service works because encryption keys are generated on your own device. open-banking.io stores only your public key, so its servers physically cannot read what your accounts contain. That is the meaning of zero-knowledge: even under subpoena, there is nothing legible to hand over.

How to connect Banque Transatlantique

Connecting happens entirely in the open-banking.io dashboard — never through code or an API call.

  1. Sign up at open-banking.io and set an encryption passphrase. Your private key is created locally and never leaves your machine.
  2. In the dashboard, choose Banque Transatlantique and pick the account type you hold — both business and personal are supported.
  3. You are redirected to Banque Transatlantique's own secure login, where you approve access under PSD2. open-banking.io never sees your banking password.
  4. Your accounts sync back into the dashboard. The consent lasts up to 180 days, after which you simply reauthorise from the same screen.

Access your data

Reading data programmatically is an optional step for developers, taken only after the bank is already connected. Open 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 directly. Every request carries an X-Api-Key header, and every response is decrypted locally with your key. An API key on its own returns only ciphertext — without your private key, the payload stays unreadable. Note there is no connect command; the tools read and refresh existing links only.

All of this runs for roughly EUR 3 per month, flat, across 2,600+ supported EU and UK banks.

FAQ

Does open-banking.io work with Banque Transatlantique's Belgian accounts?

Yes. The Belgian entity is identified by BIC CMCIBEB1, and both personal and business accounts can be linked.

Can open-banking.io staff see my transactions?

No. Data is encrypted with a key held only on your device, so the servers store ciphertext they cannot decrypt.

How often do I need to reconnect?

PSD2 consent for Banque Transatlantique runs up to 180 days; you renew it from the dashboard when it lapses.

Ready to begin? Start at open-banking.io.