I am trying to add an attachment to a pre-created Trello card
I know how to create the card, but so far I was not able to find how to add an attachment without providing the ID (because the card is not yet created)
in case of need : https://developers.trello.com/advanced-reference/card
I am using this to create the card :
https://api.trello.com/1/cards?key=<myKey>&token=<myToken>&name=My+new+card+name&desc=My+new+card+description&idList=<myIdList>
Ok I found the answer!
Create the card -> get the ID of the card in the process -> add attachments !