Helps you design sidebars for blogs, docs, and content sites with a clear opinion: sidebars are great for navigation and discovery, terrible for conversion. The skill walks you through placement (left vs right, static vs sticky), widget selection, and mobile behavior, but it'll push you toward in-content CTAs or bottom-right sticky elements instead of sidebar CTAs since the data shows posts without sidebars convert 3.1x better. Useful when you're deciding what actually belongs in that column or auditing why your sidebar signup form isn't working. Pulls from project context if available and integrates with TOC and CTA generators.
npx skills add https://github.com/kostja94/marketing-skills --skill sidebar-generator