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Guide for Česká Spořitelna a.s.

  • Go to https://developers.erstegroup.com

  • Register and create a new app

  • Add a Accounts API v2

  • Set the scope to Required

  • Enable OAuth2, set the redirect URI to http://localhost:3000 and set the grant type to "Implicit + Code"

  • Generate credentials for Sandbox app

  • Save YOUR generated API key to the .env.development file as a BANK_CSAS_WEB_API_KEY key.

    e.g.

    BANK_CSAS_WEB_API_KEY="e26d896a-d550-11e9-bb65-2a2ae2dbcce4"

  • Save YOUR generated Client ID to the .env.development file as a BANK_CSAS_CLIENT_ID key.

    e.g.

    BANK_CSAS_CLIENT_ID="4c0b5c01-ba1c-403a-833b-ab0e0e6ad2f4"

  • Save YOUR generated Client Secret to the .env.development file as a BANK_CSAS_CLIENT_SECRET key.

    e.g.

    BANK_CSAS_CLIENT_SECRET="76f9a576-25f1-4c37-a10f-ff955f800e0b"

  • Go to authorization URL to get the refresh token (change YOUR_CLIENT_ID in URL).

    https://webapi.developers.erstegroup.com/api/csas/sandbox/v1/sandbox-idp/auth?redirect_uri=http://localhost:3000&client_id=YOUR_CLIENT_ID&response_type=code&access_type=offline

  • Choose user > Continue > Confirm

  • Copy the code from the URL

    http://localhost:3000/?code=YOUR_CODE&state=null

  • Exchange code for access token and refresh token

    curl -X POST https://webapi.developers.erstegroup.com/api/csas/sandbox/v1/sandbox-idp/token -H 'Content-Type: application/x-www-form-urlencoded' -d 'grant_type=authorization_code&code=YOUR_CODE&client_id=YOUR_CLIENT_ID&client_secret=YOUR_CLIENT_SECRET&redirect_uri=http://localhost:3000'

  • Copy the value of refresh_token from the response above and save the value to the .env.development file as a BANK_CSAS_REFRESH_TOKEN key.

    e.g.

    BANK_CSAS_REFRESH_TOKEN="ewogICJ0eXBlIjogInJlZnJlc2giLAogICJuYW..."