This is for teams documenting architecture using the C4 model, specifically at the component level where you're zooming into a single container to map out its logical pieces. It synthesizes your code-level documentation into grouped components, defines their boundaries and interfaces, and generates Mermaid diagrams showing how they relate. You'd reach for this after documenting individual code elements but before mapping containers to deployment. The skill includes templates for component docs and a master index, plus guidance on what distinguishes component diagrams from code or container views. It's basically a structured way to avoid the messy middle layer of architecture documentation where teams often just skip straight from high-level boxes to code.
npx skills add https://github.com/sickn33/antigravity-awesome-skills --skill c4-component