Banco Mediolanum API Access & Open Banking Spain

Banco Mediolanum keeps your Spanish current accounts, savings and business balances behind its own secure login. With open-banking.io you can bring that data into one place and read it on your terms — no bank certificate to install and no scraping. open-banking.io reaches Banco Mediolanum (BIC BFIVESBBXXX) through the regulated PSD2 rails, covering both personal and business accounts under a single consent that stays valid for up to 180 days before you renew it.

Because open-banking.io is zero-knowledge, your account data is encrypted and only ever decrypted on your own device with a key you hold. The service stores just your public key, so nobody at open-banking.io — or anyone else — can read your Banco Mediolanum balances or transactions.

How to connect Banco Mediolanum

Connecting happens entirely inside the open-banking.io dashboard — there is no API call, code or key involved in linking your account:

  1. Sign up for open-banking.io and set your encryption passphrase. Your keys are generated locally on your device at this step.
  2. In the dashboard, search for Banco Mediolanum and choose the account type you want to link — personal or business.
  3. You are redirected to Banco Mediolanum's own secure login, where you authenticate and approve access on the bank's PSD2 consent screen.
  4. Once approved, your accounts sync back into the dashboard and stay up to date for the life of the 180-day consent.

Access your data

After the connection exists, developers can optionally read it programmatically. 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. Every request sends your X-Api-Key header, and every response is decrypted locally with your own key. An API key alone only ever returns ciphertext, so your data stays private even in transit.

All of this runs for around EUR 3/month, with no certificates and no per-connection fees.

Does connecting require an API key?

No. Linking Banco Mediolanum is done in the dashboard by approving access on the bank's login. API keys are only for reading data afterwards.

Can open-banking.io see my transactions?

No. It holds only your public key. Data is decrypted locally with a private key that never leaves your device.

How long does access last?

Up to 180 days per consent, after which you re-approve on Banco Mediolanum's screen to keep syncing.

Get started at open-banking.io.