Sourcery

Sourcery reviews pull requests automatically and leaves comments about bugs, readability and possible refactors. It started as a Python refactoring tool and has grown into a general review assistant for many languages, working with GitHub and in your editor.

Comments appear inline like a human reviewer's, with short explanations and suggested changes. Teams use it to catch the obvious problems before a person looks, which shortens review cycles.

It is free for open-source projects and paid for private repos. As with every AI reviewer, treat its notes as a first pass, not a replacement for a teammate who knows the system.