There are 4 main parts in MockBank.
With admin-console ( https://jrholding.atlassian.net/wiki/spaces/MPD/pages/679149583/Working+with+Admin-Console ) you can manage all your data with an easy-to-use web-application.
Internal API ( https://jrholding.atlassian.net/wiki/spaces/MPD/pages/685899802/Working+with+internal+API ) allows you to automate data management. Everything you can do in admin-console you can do via the internal API.
Connect to MockBank via PSD2 XS2A API section helps you to connect to MockBank via AISPs.
And finally if you want to connect to PSD2 XS2A interface please refer to https://jrholding.atlassian.net/wiki/spaces/MPD/pages/685637682/Working+with+PSD2+XS2A+API .