Using Trello API: - I\'ve been able to get all the cards that are assigned to a Trello user - I\'ve been able to get all the boards that are assigned to an Organization
You can do it by calling
GET /1/organizations/[idOrg]/boards?lists=all
It is here: https://developers.trello.com/advanced-reference/organization#get-1-organizations-idorg-or-name-boards
Look at the arguments.
There are several filters and fields. You can customize it.