Keepeek - how to create a folder in the folder tree?

Browse the folder-tree (/api/dam/folder-tree) down to the folder where you want to create a new sub-folder. Send a POST (create) request in the children collection of the parent folder with a folder representation in the body :

POST https://baobab.keepeek.com/api/dam/folder-tree/1234/children
Content-Type: application/json

{
    "title": "My sub-folder"
}

Api returns the url of the created folder in the Location response header, ex.: Location : https://baobab.keepeek.com/api/dam/folder-tree/1234/children/5678