FYRST API Access & Open Banking Integration

Reaching FYRST account data used to mean wrestling with PSD2 certificates, sandbox registrations and eIDAS paperwork. open-banking.io removes all of that. FYRST is the digital business-banking brand operating on Deutsche Bank/Postbank rails (BIC PBNKDEFF), and through open-banking.io you can link both business and personal FYRST accounts, then read balances and transactions with a private key that never leaves your device.

Because the platform is zero-knowledge, its servers only ever hold your public key. Everything you pull back is decrypted locally, so no third party — including open-banking.io — can read your FYRST statements.

How to connect FYRST

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 an encryption passphrase. Your key pair is generated right there on your own device.
  2. In the dashboard, search for FYRST and choose the account type you want to link (business or personal).
  3. You are redirected to FYRST's own secure login, where you approve access under PSD2.
  4. Your authorised FYRST accounts sync straight into your dashboard.

The consent you grant lasts up to 180 days, after which you simply re-approve on FYRST's screen to keep the connection live.

Access your data

Once FYRST is connected, programmatic access is an optional developer add-on. 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 you can run the CLI (openbanking accounts, openbanking transactions, openbanking sync), call the REST API, or use an SDK. Every request carries the X-Api-Key header, and each response is decrypted locally with your own key. An API key on its own only ever returns ciphertext — without your private key it stays unreadable. Note that the CLI and SDK read and sync existing connections; they never establish one.

All of this runs certificate-free for roughly EUR 3/month.

FAQ

Do I need a PSD2 certificate to access FYRST?

No. open-banking.io handles the regulated connection, so you never register a certificate or eIDAS credential yourself.

Can open-banking.io see my FYRST transactions?

No. The service is zero-knowledge and stores only your public key. Your data is decrypted on your device with a key only you hold.

Which FYRST account types are supported?

Both business and personal FYRST accounts can be linked, each with a maximum consent window of 180 days.

Ready to start? Head to open-banking.io and connect FYRST in minutes.