Access Volksbank Seesen Data via Open Banking API

Volksbank Seesen is a regional cooperative bank (BIC GENODEF1SES) serving the Harz area of Lower Saxony. With open-banking.io you can reach both your business and personal accounts through a single PSD2 connection — no eIDAS certificate, no bank onboarding paperwork, and no data ever readable by anyone but you.

What makes this different from a raw bank API is the trust model. open-banking.io is zero-knowledge: your encryption keys are generated on your own device, and the service only ever holds your public key. Everything that syncs from Volksbank Seesen is stored encrypted and decrypted locally, so the servers relay ciphertext they cannot read.

How to connect Volksbank Seesen

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 open-banking.io and set your encryption passphrase. Your private key is created locally and never leaves your device.
  2. In the dashboard, search for Volksbank Seesen and choose the account type you want to link — business or personal.
  3. You are redirected to Volksbank Seesen's own secure login, where you approve access on the bank's official PSD2 consent screen. A single consent stays valid for up to 180 days before you renew it.
  4. Your accounts and transactions then sync into your dashboard, already encrypted under your key.

Access your data

Reading your data programmatically is an optional developer step that comes after connecting. From the Developers page, create an API key and export a credentials.json — this bundles the API key together with your private decryption key.

With that file you can 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. The API key alone only ever returns ciphertext — without your private key there is nothing readable to leak.

All of this runs on a flat subscription of roughly EUR 3/month, covering 2,600+ supported banks.

FAQ

Do I connect Volksbank Seesen with an API key?

No. You connect in the dashboard and approve on the bank's own consent screen. API keys are only for reading data you've already linked.

Can open-banking.io staff see my Volksbank Seesen transactions?

No. The service is zero-knowledge and holds only your public key. Decryption happens on your device.

How long does access last?

Your PSD2 consent with Volksbank Seesen remains valid for up to 180 days, after which you re-approve it.

Start at open-banking.io.