Sparkasse Deggendorf Open Banking & API Access

Pulling account data from Sparkasse Deggendorf usually means wrestling with PSD2 certificates and a corporate onboarding queue. open-banking.io removes all of that. It gives you a single dashboard that speaks to Sparkasse Deggendorf (BIC BYLADEM1DEG) on your behalf, syncs your balances and transactions, and encrypts everything with a key that never leaves your device. Both business and personal accounts are supported, and a single consent stays valid for up to 180 days before you refresh it.

The service reaches 2,600+ banks across the EU and UK, so once you understand the flow for Sparkasse Deggendorf, the same steps apply to every other institution you hold.

How to connect Sparkasse Deggendorf

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 an open-banking.io account.
2. Set your encryption passphrase. Your cryptographic keys are generated locally on your own device at this moment; the servers only ever see your public key.
3. In the dashboard, search for and select Sparkasse Deggendorf, then choose whether you're linking a business or personal account.
4. You're redirected to Sparkasse Deggendorf's own secure login, where you approve access on the bank's PSD2 consent screen.
5. Control returns to your dashboard and your accounts begin syncing automatically.

That's it — no developer redirect, no uploaded certificate, no CSR.

Access your data

Reading the data programmatically is an optional step you take 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 use the CLI (openbanking accounts, openbanking transactions, openbanking sync), an SDK, or the REST API directly. Every request carries the X-Api-Key header, and each response is decrypted locally with your own key. Without that private key, an API key alone returns only ciphertext.

The architecture is zero-knowledge and certificate-free: open-banking.io holds only your public key and can never read your Sparkasse Deggendorf data. All of this runs at roughly EUR 3/month.

Do I need a PSD2 certificate for Sparkasse Deggendorf?

No. open-banking.io handles the regulated connection, so you never generate or upload a certificate.

Can I link both business and personal accounts?

Yes. Sparkasse Deggendorf supports both types — just pick the account category when you select the bank in the dashboard.

How often do I re-approve access?

Sparkasse Deggendorf consent lasts up to 180 days, after which you reapprove on the bank's login screen.

Start at open-banking.io.