This generates structured API changelogs with migration guides when you're shipping breaking changes or deprecating endpoints. It templates out version announcements with before/after code examples, deprecation timelines, and step-by-step migration paths. The format is straightforward: breaking changes up top, support policy in a table, and actual code diffs showing what developers need to change. Useful if you're maintaining multiple API versions and need to communicate what's changing without leaving your users guessing. The three to six month deprecation window it suggests is reasonable, and the emphasis on concrete examples over vague notices is the right approach.
npx skills add https://github.com/secondsky/claude-skills --skill api-changelog-versioning