Apply selected brush in a document

Photoshop
1

I’m trying to create a plugin focused on brushes
and I’d like to create a button that creates a 100x100px black layer and automatically applies the selected brush to the document. I’ve looked around but haven’t found anything. Do you have any ideas?

2

I think it might be one of these two:

{
   "_obj": "select",
   "_target": [
      {
         "_ref": "toolPreset",
         "_name": "Tool Preset Name"
      }
   ]
}

{
   "_obj": "select",
   "_target": [
      {
         "_ref": "brush",
         "_name": "Brush Name"
      }
   ]
}
3

Thanks I will try them both.