Get Stream Window?!

Okay thank you. And dont worry you are helping. Which endpoints is OBS using or CLR? I just need to find a way to display something in the stream without using OBS or basically something that works independent from any streaming software. Do you have any idea where to find people who can code smthg like this?

What people see is being streamed but what if the text I want to display is not being streamed…like the twitchadvertsiment…they are also not streamed…but just displayed.