Review the agent's work before anyone else sees it.

The Review tab compares the session's worktree with its base, using the remote-tracking branch when there is one, so it matches what the pull request will show. Untracked files are included. Switch between unified and split views; in both, the words that changed inside a line are marked. The file list shows each file's change type, line counts and how many comments are open or resolved on it.

Hover a line, write a note and add it. Notes stay on your machine. When you are done, Send N comments to agent turns every open note into one prompt and writes it to the running agent, which picks it up on its next turn. Sent notes are marked resolved, so the file list keeps a record of what you handed over.

Run AI review hands the diff to a separate, headless Claude, which looks for bugs, security issues and risky changes and leaves its findings as inline comments. You write the review instructions, globally or per workspace or project. Plexus supplies the output format, so the comments land on the right lines whatever your instructions say.

The review-and-fix cycle runs an AI review, starts a separate headless agent to apply the fixes, waits for it, and reviews again. It stops when a review finds nothing or when it reaches the round limit, 10 by default. It asks for consent once per repository, refuses to run on the project's main checkout, and never pushes. Watch agent opens a live, read-only view of the fix agent while it works.

Once a session has a pull request on GitHub or Bitbucket, its review threads appear under the lines they are about. Comments, verdicts and outdated threads sit in a section above the diff. Reply, resolve, start a new thread, or publish one of your local notes to the pull request after a confirmation that names the repository. Send PR comments to agent hands the threads to the agent. Plexus fetches the conversation when you open the tab, focus the window or press Refresh. There is no background polling.

Start a session on an existing branch, such as a colleague's branch or the head of a pull request you were asked to review, and set Compare with to the branch it will merge into. The Review tab then shows their work with the same diff, notes, AI review and pull request conversation. The session has its own worktree, so your main checkout and your other sessions stay where they are.