Tinn Sparebank API Access & Open Banking Data

Tinn Sparebank, the Eika-Alliance savings bank rooted in Rjukan since 1858, keeps your everyday banking local — and open-banking.io lets you reach that data on your own terms. Instead of chasing PSD2 certificates or per-bank developer portals, you link Tinn Sparebank once inside a single dashboard, then read the results privately whenever you need them. Both business and personal accounts are supported, and each authorisation stays valid for up to 180 days before Tinn Sparebank asks you to renew it.

The defining trait is privacy. open-banking.io is zero-knowledge and certificate-free: your encryption keys are generated on your own device, so the service only ever holds your public key. Data is decrypted locally, never on a server that could read it.

How to connect Tinn Sparebank

Connecting happens entirely in 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 your encryption passphrase. Your private key is created locally at this moment and never leaves your device.
  2. In the dashboard, search for Tinn Sparebank and choose the account type you want to link — business or personal.
  3. You are redirected to Tinn Sparebank's own secure login, where you approve access on the bank's PSD2 consent screen.
  4. Your approved accounts sync straight back into your dashboard, ready to view.

That consent lasts up to 180 days; renew it in the dashboard whenever it lapses.

Access your data

Reading the data programmatically is an optional developer step, only after a connection exists. Open the Developers page, create an API key, and export a credentials.json — it bundles the API key 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 own key. The key alone returns only ciphertext — without your private key, nobody, including open-banking.io, can read it. There is no connect command; the CLI and SDK only read and sync existing links.

Pricing is roughly EUR 3/month for the full catalogue of 2,600+ EU/UK banks.

Does open-banking.io have an API key for Tinn Sparebank?

No. You connect via the dashboard; API keys only read data you already linked.

What is Tinn Sparebank's BIC?

A BIC is not required here — none is needed to connect Tinn Sparebank through open-banking.io.

Can open-banking.io read my transactions?

No. It is zero-knowledge and holds only your public key; decryption happens on your device.

Start at https://open-banking.io.