Overview
What The Diff reads pull-request diffs through the GitHub or GitLab API and generates plain-language descriptions of what changed and why. Its features include automatic PR descriptions, team summary notifications, weekly reports, inline refactoring requests, public changelogs, and controls for repository selection and token use. The service is aimed at developers, maintainers, and product teams that need shared context around code changes. The official site says it does not store the code or diff and does not provide an official product source repository.