codex-excalidraw-skill

Create, inspect, and edit Excalidraw diagrams as editable `.excalidraw` JSON files. Use when Codex needs to turn architecture sketches, process flows, user journeys, system diagrams, workshop notes, whiteboard-style visuals, or Mermaid-like node-and-edge specs into an Excalidraw file; modify existing Excalidraw scenes; or prepare diagram files that the user can open and continue editing in Excalidraw.