I think you should work harder on the landing page... I still don't understand what you do. If I had to guess, you input a code file and then writes the documentation for you? Maybe I don't know enough about programming, but I don't understand it.
Overall great impression, ruined by obligatory login right after I wanted to search. I was so thrilled about ease of use of this tool in the first place, I think it should ask in the first place/have disabled input until I login, because then it's an unpleasant surprise. Love the idea, it's needed!