Flow description

Step 1: Authorize User's Accounts Consent

Giving consent from your user to you to access his/her personal banking data follows OAuth 2.0 Authorization Code Grant flow.

  1. Your application initiates the flow by directing your user browser to the authorization endpoint. Initiation is carried out by making a GET /auth/oauth/v2/authorize request (using /premium/sandbox or /premium/production as base URL).
  2. The bank authenticates your user and establishes whether the user grants or denies your access request.
  3. Assuming your user grants access, the bank server redirects the user browser back to your application using the redirection URI provided during your application registration. The redirection URI includes an authorization code
  4. Your application requests an access token from the bank server's token endpoint by including the authorization code received in the previous step. The authorization code exchange is carried out by making a POST /auth/oauth/v2/token request
  5. The bank server authenticates your application, validates the authorization code, and ensures that the redirection URI received matches the URI used to redirect your application in step 3. If valid, the bank server responds back with an access token and a refresh token. Issued token expires after 90 days.

Your user onboarding

Before your first call to account information services API your user should authorize you to access user's personal data.

After token revocation

Issued token can be revoked by your user or after time period e.g. 90 days. In this case the bank server responses with HTTP 401 Unauthorized to your API call.

Step 2: Get Consented Accounts List

  1. Your application can initiate GET /v1/accounts request with valid access token.
  2. The bank server validates access token and returns consented accounts list.
  3. Record the accountId parameter, it is used as input for the other API methods

Step 3: Get Account Information and Balances

  1. To provide your user with detail information about account your application initiates GET /v1/accounts/{account-id} request with valid access token.
  2. The bank server validates access token and returns account's detail and balances.

Step 4: Get Account Transactions History

  1. Your application requests account transaction history by GET /v1/accounts/{account-id}/transactions with valid access token.
  2. The bank server validates access token and returns a page with account's transactions.


Your application can provide a paginated response for transactions history that returns multiple transaction records. For a paginated responses, please ensure that the number of transaction records on a page (value of pageSize request parameter) are within reasonable limits.

Step 5: Refresh Expired Access Token

When an access token obtained through an authorization code grant expires, your application should attempt to get a new access and refresh token by calling POST /auth/oauth/v2/token. For more information see Section 6 Refreshing an Access Token in of the OAuth 2.0 specification. If your application fails to get an access token using a refresh token, your application would have to get your client to initiate a fresh authorisation code grant using an existing consent