This skill enables AI coding assistants to generate professional draw.io diagrams (flowcharts, ERDs, architecture diagrams) from natural language prompts. It supports 6 diagram presets, a 2-round self-check validation loop for quality assurance, and exports to PNG/SVG/PDF/JPG formats. The tool also analyzes existing codebases (Python, JS/TS, Go, Rust) to auto-generate structure diagrams. It integrates with the Agent Skills ecosystem and works with Claude Code, Cursor, Copilot, OpenClaw, Codex, and other compatible agent frameworks.