Hello Bank API Access & Open Banking Connection

Hello Bank is BNP Paribas' mobile-first bank in France, and open-banking.io lets you reach its account and transaction data without wrestling with certificates, TPP licences, or sandbox paperwork. You approve access once through Hello Bank's own PSD2 flow, and from then on your balances and transactions sync into a dashboard that only you can decrypt. Everything stays private by design: the service keeps your public key, never your data in the clear.

Hello Bank (BIC BNPAFRPPXXX) works for both business and personal accounts, and a single consent stays valid for up to 180 days before you re-authorise.

How to connect Hello Bank

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 keys are generated locally on your own device, so no one else can produce them.
  2. In the dashboard, choose Hello Bank and pick the account type you want to link (business or personal).
  3. You're redirected to Hello Bank's own secure login, where you approve access under PSD2.
  4. Control returns to your dashboard and your accounts begin syncing automatically.

That's the whole flow — a redirect to the bank, your consent, and the data starts flowing.

Access your data

Once Hello Bank is connected, reading the data programmatically is an optional developer step. 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 you can use the CLI (openbanking accounts, openbanking transactions, openbanking sync), an SDK, or the REST API. Requests authenticate with the X-Api-Key header, and every response is decrypted locally with your own key. Without that private key an API key returns only ciphertext — the servers genuinely cannot read your data.

FAQ

Do I need a developer account to connect Hello Bank?

No. Connecting is done in the dashboard by approving access on Hello Bank's login screen. API keys are only for the optional programmatic read step afterwards.

Can open-banking.io see my Hello Bank transactions?

No. It's zero-knowledge — it holds only your public key. Data is decrypted on your device with a private key that never leaves it.

What does it cost?

Around EUR 3 per month, with no certificates or TPP registration required.

Get started at open-banking.io.