Fürstlich Castell'sche Bank Credit-Casse Open Banking

Fürstlich Castell'sche Bank Credit-Casse is one of Germany's oldest private banks, and open-banking.io lets you reach its account data without the usual PSD2 friction. There are no eIDAS certificates to buy, no bank-specific sandbox to register for, and no compliance paperwork. You link your account once, and both business and personal balances and transactions flow into a single dashboard that only you can decrypt.

Because the platform is zero-knowledge, encryption keys are generated on your own device. open-banking.io stores nothing but your public key, so the servers relay ciphertext they can never read.

How to connect Fürstlich Castell'sche Bank Credit-Casse

Connecting happens entirely in the open-banking.io dashboard — no code, no API key, no developer setup:

  1. Sign up for open-banking.io and choose an encryption passphrase. Your private key is derived locally and never leaves your device.
  2. In the dashboard, search for Fürstlich Castell'sche Bank Credit-Casse (BIC FUCEDE77XXX) and select the account type you need — business or personal.
  3. You are redirected to the bank's own secure login to approve access under PSD2. You authenticate directly with Fürstlich Castell'sche Bank Credit-Casse; open-banking.io never sees your credentials.
  4. Once approved, your accounts sync back into the dashboard. Consent lasts up to 180 days, after which you simply re-approve on the bank's screen.

Access your data

Reading data programmatically is an optional step for developers, and only after the connection above exists. On the Developers page, create an API key and export a credentials.json — it 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. Every request carries the X-Api-Key header, and each response is decrypted locally with your key. An API key on its own returns only ciphertext — without your private key, the data stays unreadable. The CLI and SDKs read and sync existing connections; they cannot link a new bank.

At roughly EUR 3/month, you get certificate-free access across 2,600+ EU and UK banks.

Does open-banking.io store my banking password?

No. You authenticate on Fürstlich Castell'sche Bank Credit-Casse's own login screen, and only the PSD2 consent token is used afterward.

Can I connect both business and personal accounts?

Yes. Both account types are supported — add each one through the dashboard and approve it separately.

How long does access last before I re-approve?

Up to 180 days per consent, the PSD2 maximum. The dashboard prompts you to renew on the bank's screen when it expires.

Start at open-banking.io.