ASN Bank API Access & Open Banking Data Export
Reaching ASN Bank account data used to mean chasing PSD2 certificates, sandbox registrations and eIDAS paperwork. open-banking.io removes that overhead: it links your ASN Bank accounts through a single dashboard, then keeps them in sync so you always have current balances and transactions. ASN Bank (BIC ASNBNL21), the Dutch sustainability-focused bank, supports both business and personal accounts here, and every consent lasts up to 180 days before you refresh it.
Because open-banking.io is zero-knowledge, your ASN Bank data is encrypted with a key generated on your own device. The service stores only your public key, so nobody on the server side — not open-banking.io, not a third party — can read your balances or transactions.
How to connect ASN Bank
Connecting happens entirely inside the open-banking.io dashboard; there is no API call, code or key involved in this step.
- Sign up for open-banking.io and set your encryption passphrase. Your keys are created locally on your device at this moment.
- In the dashboard, choose ASN Bank and select the account type you need — business or personal.
- You are redirected to ASN Bank's own secure login, where you approve access under PSD2. Your credentials only ever touch the bank.
- Once approved, your ASN Bank accounts flow back into the dashboard and begin syncing automatically.
That is the whole flow — no certificates, no developer redirect, no sandbox.
Access your data
After your ASN Bank connection is live, developers can optionally read it programmatically. On the Developers page, create an API key and export a credentials.json — this file 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 your key in the X-Api-Key header, and each response is decrypted locally with your private key. An API key alone only ever returns ciphertext — the readable data appears solely on your own machine.
All of this runs from roughly EUR 3/month, covering ASN Bank alongside 2,600+ other EU and UK banks.
Is my ASN Bank login shared with open-banking.io?
No. You authenticate on ASN Bank's own consent screen, so your banking credentials never pass through open-banking.io.
How long does ASN Bank access last?
Up to 180 days per consent. When it expires, reauthorise from the dashboard to keep your accounts syncing.
Can I read ASN Bank data without writing code?
Yes. The dashboard shows synced accounts directly. The API key, CLI and SDK are an optional layer for developers who want programmatic access.
Start syncing your ASN Bank accounts at open-banking.io.