Santander CIB Open Banking & API Access for Spain

Santander Corporate & Investment Banking (Santander CIB) serves corporate and institutional clients in Spain, and its business account data can be reached without any bank certificate or eIDAS setup through open-banking.io. We cover 2,600+ EU and UK banks under one roof, and everything you pull from Santander CIB is decrypted on your own device with a key that never leaves it. Santander CIB (BIC SABNESMMSSS) exposes business accounts, and a single consent stays valid for up to 180 days before you renew it.

How to connect Santander CIB

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

  1. Sign up at open-banking.io and set your encryption passphrase. Your key pair is generated locally on your device, so only your public key ever reaches our servers.
  2. In the dashboard, choose Santander CIB and select the business account type.
  3. You are redirected to Santander CIB's own secure login, where you approve access under PSD2 — we never see your credentials.
  4. Your approved accounts sync straight into your dashboard, and the consent runs for up to 180 days.

Access your data

Reading the data programmatically is an optional developer step that comes after the account is connected. Open the Developers page, create an API key, and export a credentials.json — it 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 the X-Api-Key header, and each response is decrypted locally with your own key. There is no connect command — the CLI and SDK only read and sync connections you already approved in the dashboard.

Because open-banking.io is zero-knowledge, our servers hold only your public key and never the plaintext of your Santander CIB accounts. Pricing is a flat ~EUR 3/month, with no certificates and no per-call fees.

Does open-banking.io support Santander CIB personal accounts?

No — Santander CIB is a corporate franchise, so open-banking.io connects its business accounts only.

How long does access last before I reconnect?

A Santander CIB consent is valid for up to 180 days. After that you re-approve access from the dashboard.

Can someone with my API key read my data?

No. An API key alone returns only ciphertext. Readable data requires your private decryption key from credentials.json, which stays on your device.

Ready to start? Create your account at open-banking.io.