GTool is basically a common database where one player uploads a piece of data, and then it will be available to everyone who has access to this specific gtool!
u can choose what to upload by selecting the checkboxes in the options of the extension.
experiment with the buttons there,
nothing you can do will mess up the database as u dont have the privileges to delete anything from it....
i had no idea what GTool was, in 2h i explored everything and what it does...