Sparkasse Mecklenburg-Nordwest Open Banking API

Reaching account data at Sparkasse Mecklenburg-Nordwest usually means wrestling with PSD2 certificates, TPP registration and per-bank sandboxes. open-banking.io removes all of that. It is a certificate-free service covering 2,600+ EU and UK banks, so a single subscription lets you read balances and transactions from Sparkasse Mecklenburg-Nordwest (BIC NOLADE21WIS) without ever applying for a licence or eIDAS certificate. Both business and personal accounts are supported, and each authorisation stays valid for up to 180 days before you renew it.

The defining trait is privacy. open-banking.io is zero-knowledge: your encryption keys are generated on your own device from a passphrase only you know, and the servers hold nothing but your public key. Every figure that reaches you is decrypted locally, so no one — not even open-banking.io — can read your Sparkasse Mecklenburg-Nordwest data.

How to connect Sparkasse Mecklenburg-Nordwest

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 private key is created right there on your device.
  2. In the dashboard, search for Sparkasse Mecklenburg-Nordwest and choose the account type you need — business or personal.
  3. You are redirected to Sparkasse Mecklenburg-Nordwest's own secure login, where you approve access under PSD2 consent.
  4. Once approved, your accounts sync back into the dashboard automatically, and refreshed data flows in for the life of the 180-day consent.

Access your data

Reading the data programmatically is an optional step that comes after the connection exists. Open 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 the CLI (openbanking accounts, openbanking transactions, openbanking sync), the SDKs and the REST API all work the same way: requests carry your key in the X-Api-Key header, and each response is decrypted locally with your own key. The CLI and SDKs only read and sync connections that already exist — they never establish one. And because the API key alone returns only ciphertext, your private key is what turns a response into readable numbers.

All of this runs for roughly EUR 3 per month, with no setup fees or certificate costs.

Do I need a PSD2 certificate for Sparkasse Mecklenburg-Nordwest?

No. open-banking.io is certificate-free; you authorise access directly on the bank's consent screen.

Can open-banking.io see my transactions?

No. It is zero-knowledge — only your public key is stored, and decryption happens on your device.

How long does access last?

Up to 180 days per consent, after which you re-approve on Sparkasse Mecklenburg-Nordwest's login screen.

Start at open-banking.io.