Hello, Did you know where is a Brush Settings of Photoshop API?
Did you try forum search? Multiple threads on the topic and some have answers
I can’t find a Word ‘Brush Settings’… I would like to see a Brush Settings Source Code.
What do you mean by Source Code? And what are you trying to achieve? I’m pretty sure solutions are in the posts on search results I linked 
C++, Javascript and More.
This might be helpful: http://forums.creativeclouddeveloper.com/t/how-to-change-brush-hardness-without-changing-its-size-via-batchplay/4385/2
And that’s the first link in the search results I posted. But apparently topic author didn’t even bother to check (at least Discourse doesn’t show it was clicked)