Trello API: getting boards / lists / cards information

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

But I can't get any API call that returns all the lists that are in an Organization or User. Is there any function that allows that ?

I don't believe there is a method in the Trello API to do this, so you'll have to get a list of boards for a user or organization:

GET /1/members/[idMember or username]/boards

Which returns (truncated to show just the parts we care about):

[{
    "id": "4eea4ffc91e31d1746000046",
    "name": "Example Board",
    "desc": "This board is used in the API examples",
    ...
    "shortUrl": "https://trello.com/b/OXiBYZoj"
}, {
    "id": "4ee7e707e582acdec800051a",
    "name": "Public Board",
    "desc": "A board that everyone can see",
    ...
    "shortUrl": "https://trello.com/b/IwLRbh3F"
}]

Then get the lists for each board:

GET /1/boards/[board_id]/lists

Which returns (truncated to only show the list id and name:

[{
    "id": "4eea4ffc91e31d174600004a",
    "name": "To Do Soon",
    ...
}, {
    "id": "4eea4ffc91e31d174600004b",
    "name": "Doing",
    ...
}, {
    "id": "4eea4ffc91e31d174600004c",
    "name": "Done",
    ...
}]

And go through this response for each board to build a list of all the lists a user or organization has.