Sparkasse Altmark West API & Open Banking Access
Pulling your own account data out of Sparkasse Altmark West (BIC NOLADE21SAW) usually means wrestling with bank-specific portals and PSD2 red tape. open-banking.io removes that friction: it links to Sparkasse Altmark West as one of 2,600+ supported EU and UK banks and hands you a single, consistent view of your balances and transactions. Both business and personal accounts are covered, with consent lasting up to 180 days before you re-approve.
The defining feature is privacy. open-banking.io is zero-knowledge and certificate-free — your encryption keys are generated on your own device from a passphrase only you know. The service stores just your public key, so its servers can never read or decrypt what syncs through them.
How to connect Sparkasse Altmark West
Connecting happens entirely inside the open-banking.io dashboard — there is no API call, code, or key involved in this step:
- Sign up for open-banking.io and set your encryption passphrase. Your private key is created locally and never leaves your device.
- In the dashboard, search for Sparkasse Altmark West and choose the account type — business or personal.
- You are redirected to Sparkasse Altmark West's own secure login, where you approve access on the bank's PSD2 consent screen.
- Your accounts sync back into the dashboard, ready to view. The consent stays valid for up to 180 days.
Access your data
Reading the data programmatically is an optional step you take only after the connection above exists. On the Developers page, create an API key and export a credentials.json that bundles that key with your private decryption key. From there use 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 key — an API key alone returns only ciphertext. The CLI and SDK read and sync existing connections; they never create one.
All of this runs for roughly EUR 3 per month.
Is my Sparkasse Altmark West login shared with open-banking.io?
No. You authenticate directly on Sparkasse Altmark West's own consent page. open-banking.io never sees your banking credentials.
Can open-banking.io read my transactions?
No. It is zero-knowledge and holds only your public key. Data is decrypted on your device with a private key you alone control.
Do I need to be a developer to connect?
No. Connecting Sparkasse Altmark West is a point-and-click dashboard flow. API keys and the CLI are optional extras for developers.
Start at https://open-banking.io.