Kreissparkasse St. Wendel API & Open Banking Access

Reaching account data at Kreissparkasse St. Wendel no longer means wrestling with PSD2 certificates or bank-specific sandboxes. open-banking.io gives you one dashboard that speaks to 2,600+ European banks, and Kreissparkasse St. Wendel (BIC SALADE51WND) is one of them. Both business and personal accounts are supported, so a treasurer consolidating company ledgers and an individual tracking household spending use the exact same flow. Every consent you grant lasts up to 180 days before Kreissparkasse St. Wendel asks you to re-authorise.

The defining trait is privacy: open-banking.io is zero-knowledge. Your encryption keys are generated on your own device from a passphrase you choose, and account data is decrypted locally. The service stores only your public key, so it can never read your balances or transactions — and there are no eIDAS certificates to buy or renew.

How to connect Kreissparkasse St. Wendel

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 keys are created right there on your device.
  2. In the dashboard, search for Kreissparkasse St. Wendel and choose whether you're linking a business or personal account.
  3. You're redirected to Kreissparkasse St. Wendel's own secure login, where you approve access on the bank's PSD2 consent screen.
  4. Control returns to your dashboard and your accounts sync automatically.

That's the whole connection. No developer redirect, no client secret — just the bank's login and your consent.

Access your data

Once an account is linked, programmatic access is an optional developer extra. On the Developers page, create an API key and export a credentials.json — it bundles the API key with your private decryption key. Then read data with the CLI (openbanking accounts, openbanking transactions, openbanking sync), an SDK, or the REST API. 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 existing connections — they never connect a bank. Without your private key, an API key alone returns unreadable ciphertext.

Do I need a PSD2 certificate for Kreissparkasse St. Wendel?

No. open-banking.io is certificate-free — consent is granted directly on the bank's login screen.

Can open-banking.io see my Kreissparkasse St. Wendel transactions?

No. It holds only your public key; decryption happens on your device.

How much does it cost?

Around EUR 3/month, covering Kreissparkasse St. Wendel and every other supported bank.

Start at open-banking.io.