The drawio-mcp repository provides a comprehensive ecosystem for AI-assisted diagram creation using the Model Context Protocol (MCP). It consists of four integrated approaches: an MCP App Server for inline diagram rendering in AI chat interfaces (deployable as Node.js or Cloudflare Worker), an MCP Tool Server for opening diagrams in the draw.io browser editor, assistant-specific plugins for Claude Code, Codex, and GitHub Copilot, and project instructions for Python-based diagram generation. The system enables AI assistants to create diagrams from Mermaid or XML input, apply layouts (ELK/libavoid), and export to various formats while emphasizing data residency controls—self-hosted options keep all diagram data local, with cloud export requiring explicit user action via draw.io Desktop CLI.