Sparkasse Oberlausitz-Niederschlesien Open Banking API

Reaching account data from Sparkasse Oberlausitz-Niederschlesien (BIC WELADED1GRL) — the Saxon savings bank serving Görlitz, Bautzen and the wider Oberlausitz-Niederschlesien region — normally means wrestling with PSD2 certificates and bank-specific sandboxes. open-banking.io removes that. It gives you one consistent, encrypted route to both business and personal accounts across 2,600+ European banks, with no eIDAS certificate to obtain and no server that can ever read your figures.

Everything is zero-knowledge: your encryption keys are generated on your own device, and open-banking.io stores only your public key. Balances and transactions are decrypted locally, by you — never on their infrastructure.

How to connect Sparkasse Oberlausitz-Niederschlesien

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

  1. Sign up for an open-banking.io account.
  2. Set an encryption passphrase. Your private decryption key is created locally at this moment and never leaves your device.
  3. In the dashboard, pick Sparkasse Oberlausitz-Niederschlesien and choose the account type — business or personal.
  4. You are redirected to Sparkasse Oberlausitz-Niederschlesien's own secure login, where you approve access on the bank's PSD2 consent screen. Consent lasts up to 180 days, after which you simply re-approve.
  5. Your accounts sync into your dashboard, ready to view.

Access your data

Reading data programmatically is an optional developer step that comes after the connection above exists. 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.

Every request authenticates 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 established in the dashboard — they never create one. An API key by itself returns only ciphertext; without your private key it stays unreadable.

All of this runs at roughly EUR 3/month.

Do I need a PSD2 certificate?

No. open-banking.io is certificate-free — you authorise directly on Sparkasse Oberlausitz-Niederschlesien's login screen and skip the eIDAS paperwork entirely.

Can open-banking.io see my Sparkasse balances?

No. The service is zero-knowledge and holds only your public key. Data is decrypted on your device with a key only you control.

Which account types are supported?

Both business and personal Sparkasse Oberlausitz-Niederschlesien accounts, each under a consent valid for up to 180 days.

Start at open-banking.io.