mdxcn offers open-source MDX diagram components installable via shadcn CLI
Because the diagrams are plain text, agents can re-edit them later just as they wrote them, with no renderer or binary assets involved. Developers writing postmortems, refactor plans or PR notes can add the skill, request a write-up, and get a chart picked by the decision table in seconds. Compared with Mermaid or Recharts, this stays legible in any Markdown host, though the strict rules — max two charts per piece, no pie charts, Geist Mono only — demand discipline.
