Scale your team’s best review practices with AI agents trained on your actual PR history through Custom Reviewers with prompt optimization: auto-generated from past comments and suggestions in your codebase to reflect the real conventions your team already enforces, each reviewer including example comments and links to the PRs that inspired it, with editable prompts to fit your team’s tone and style and consistent scaling across multiple repositories. In this release, you get automatically generated reviewers from past PR discussions, linked examples and context for transparency, and editable prompts, plus the Prompt Playground—a review agent test lab that lets you edit Custom Reviewer prompts directly (or describe changes in plain language), test reviewer behavior on real change requests before rollout, and tune the tone, scope, and strictness of any review agent without pushing untested AI into production.