Sparkasse St.Blasien API Access & Open Banking

Reaching your Sparkasse St.Blasien accounts programmatically usually means certificates, sandboxes and PSD2 paperwork. open-banking.io removes all of that. It is a zero-knowledge, certificate-free gateway to 2,600+ EU and UK banks, so you link Sparkasse St.Blasien once and read balances and transactions through a clean interface. Sparkasse St.Blasien (BIC SOLADES1STB) supports both business and personal accounts, with consent lasting up to 180 days before you re-approve.

The important detail: your account data is decrypted on your own device with a key only you hold. open-banking.io's servers store only your public key, so nobody there — or anywhere else — can read your Sparkasse St.Blasien statements.

How to connect Sparkasse St.Blasien

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 encryption keys are generated locally, on your device, at this moment.
  2. In the dashboard, search for and select Sparkasse St.Blasien, then choose the account type you want to link — business or personal.
  3. You are redirected to Sparkasse St.Blasien's own secure login, where you authenticate and approve access under PSD2. Your credentials are only ever entered on the bank's page.
  4. Once approved, your Sparkasse St.Blasien accounts sync into the dashboard, ready to view. That consent stays valid for up to 180 days.

Access your data

After a connection exists, developers can optionally read it in code. 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 directly. Requests authenticate with the X-Api-Key header, and every response is decrypted locally with your own key. The CLI and SDK only read and sync connections you already made in the dashboard — they never establish a new one. And because the API key alone can only fetch ciphertext, your private key is what turns responses into readable data.

All of this runs at roughly EUR 3/month, with no certificate or QWAC to buy.

Does open-banking.io see my Sparkasse St.Blasien data?

No. It is zero-knowledge — it holds only your public key. Decryption happens on your device.

Which account types are supported?

Both business and personal Sparkasse St.Blasien accounts (BIC SOLADES1STB).

How long does access last?

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

Start at open-banking.io.