BugBot is Cursor's dedicated AI code review tool that automatically analyzes every pull request opened on connected GitHub repositories using a multi-pass parallel review architecture. Rather than scanning a PR diff once and posting comments, BugBot runs eight independent review passes with randomized diff ordering on every pull request, a design that catches subtle bugs and logical errors that single-pass reviewers consistently miss. Since its launch in mid-2025, BugBot has processed over two million pull requests monthly, and Discord's engineering team has publicly reported that it catches real bugs on PRs that had already been approved by human reviewers, with over 70% of flagged issues getting resolved before merge.
The tight integration with the Cursor IDE is BugBot's most distinctive characteristic. When BugBot flags an issue in a PR review comment, developers can click a Fix in Cursor button that opens the relevant file in Cursor with the suggested fix pre-loaded, ready for review and application. This eliminates the context switch between reading a review comment on GitHub, locating the file locally, understanding the suggestion, and implementing the fix. For teams already using Cursor as their primary editor, this creates a seamless loop between code review feedback and code modification that significantly reduces the time from review comment to resolved issue.
BugBot is priced at $40 per user per month on top of an existing Cursor subscription, with a 14-day free trial available for evaluation. The tool is currently GitHub-only and does not support GitLab, Bitbucket, or Azure DevOps. Research cited by the Cursor team suggests 30 to 40 percent cycle time improvements for PRs under 500 lines, with diminishing returns above that threshold. The primary constraint is ecosystem lock-in: BugBot requires active Cursor subscriptions for the full experience, making it best suited for teams that have already committed to Cursor rather than those evaluating standalone code review solutions.