How to implement the function of getting the balance of the card on the site?

Question

Payment systems

The idea is the following. Implement on the site the ability for the user to view the balance of a bank card card. Tell me in which direction to dig to implement this? Maybe someone has done something like this.
Should I look towards visa, mastercard API or for each bank separately?
developer.visa.com
And what nuances does this entail. It may be necessary to draw up additional documents. Pay per use, etc.