Code & Engineering skills

Engineering skills work on code you paste as text: they review a diff, point out bugs and security problems, or draft the words around a change. They never run your code and never call your repository, so they can miss what depends on files you did not paste, and each skill says so. What is not here: skills that need a shell, a build or network access. We test code skills by planting real defects in small changes and checking which ones are found, ranked and explained, on a strong model and a weak one. The counts appear on the skill page.