This automates D2 diagram creation, the declarative diagramming language that renders to SVG. It triggers when you mention "d2 diagram creator" or related phrases and has access to read, write, edit, bash, and grep tools. Part of the Visual Content category alongside Mermaid and other visualization tools. The source is pretty bare bones on specifics, but the core idea is solid: D2 is cleaner than most diagramming syntaxes and produces professional looking architecture diagrams, flowcharts, and sequence diagrams without fighting with GUI tools. If you're already writing docs as code, this slots right in.
npx skills add https://github.com/jeremylongshore/claude-code-plugins-plus-skills --skill d2-diagram-creator