Caja Rural de Aragón API Access & Open Banking

Caja Rural de Aragón, the Aragonese cooperative bank known commercially as Bantierra, gives its members reliable account and payment services across the region. With open-banking.io you can reach that same account data through a single, privacy-first workspace — no PSD2 certificate, no eIDAS registration, and no bank-specific integration code to maintain. open-banking.io covers 2,600+ EU and UK banks, and Caja Rural de Aragón (BIC BCOEESMM191) is one of them, for both business and personal accounts.

The defining trait here is zero-knowledge encryption. When you sign up you set an encryption passphrase, and the keys are generated locally on your own device. open-banking.io stores only your public key, so its servers can never read or decrypt what flows through them. Every balance and transaction is unlocked on your machine, by you alone.

How to connect Caja Rural de Aragón

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

  1. Create your open-banking.io account and set your encryption passphrase (your private key never leaves your device).
  2. In the dashboard, search for and select Caja Rural de Aragón and choose the account type — business or personal.
  3. You are redirected to Caja Rural de Aragón's own secure login, where you approve access under PSD2. Consent lasts up to 180 days before a straightforward renewal.
  4. Your approved accounts sync back into the dashboard, ready to view.

Access your data

Reading data programmatically is an optional step for developers, available only after a connection exists. Open the Developers page, generate an API key, and export a credentials.json — it bundles the API key with your private decryption key. From there use the CLI (openbanking accounts, openbanking transactions, openbanking sync), an SDK, or the REST API. Requests carry the X-Api-Key header, and each response is decrypted locally with your own key. An API key by itself only ever returns ciphertext — without your private key it stays unreadable.

All of this runs at roughly EUR 3/month, with no certificate costs layered on top.

Do I need a PSD2 certificate for Caja Rural de Aragón?

No. open-banking.io handles the regulated connection; you simply approve access on Caja Rural de Aragón's consent screen.

Can open-banking.io read my Caja Rural de Aragón data?

No. It holds only your public key. Decryption happens on your device with a private key that never leaves it.

Which account types are supported?

Both business and personal Caja Rural de Aragón accounts can be connected.

Start at https://open-banking.io.