Kreissparkasse Esslingen-Nürtingen Open Banking API

Pulling your Kreissparkasse Esslingen-Nürtingen account data into your own tools no longer means chasing bank certificates or wrestling with a raw PSD2 gateway. open-banking.io gives you a single, zero-knowledge path to Kreissparkasse Esslingen-Nürtingen (BIC ESSLDE66XXX) covering both business and personal accounts. Your statements, balances and transactions are decrypted on your own device with a key only you hold — the service never sees your unencrypted data.

How to connect Kreissparkasse Esslingen-Nürtingen

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 generated locally on your device, so nobody else can reconstruct them.
  2. In the dashboard, pick Kreissparkasse Esslingen-Nürtingen from the bank list and choose your account type (business or personal).
  3. You are redirected to Kreissparkasse Esslingen-Nürtingen's own secure login, where you approve access on the bank's PSD2 consent screen. Consent lasts up to 180 days before you renew it.
  4. Your approved accounts sync straight back into your dashboard, ready to view.

That's the whole flow — you authorise directly with Kreissparkasse Esslingen-Nürtingen, and open-banking.io only ever stores data encrypted under your public key.

Access your data

Once your Kreissparkasse Esslingen-Nürtingen accounts are connected, developers can optionally read them 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 directly. Requests authenticate with the X-Api-Key header, and every response is decrypted locally with your own key. Without that private key, an API key alone returns only ciphertext — which is exactly what zero-knowledge means.

At around EUR 3/month, it's a certificate-free, privacy-first way to work with Kreissparkasse Esslingen-Nürtingen data.

FAQ

Can I connect Kreissparkasse Esslingen-Nürtingen without writing code?

Yes. Connecting is done entirely in the dashboard by approving access on Kreissparkasse Esslingen-Nürtingen's own login screen. Code is only needed later if you want to read data programmatically.

Does open-banking.io see my Kreissparkasse Esslingen-Nürtingen transactions?

No. The service is zero-knowledge and holds only your public key. Data is decrypted on your device with a private key that never leaves it.

How long does access to Kreissparkasse Esslingen-Nürtingen last?

Kreissparkasse Esslingen-Nürtingen permits a maximum consent window of 180 days, after which you simply re-approve access.

Ready to start? Visit open-banking.io.