excalidraw-mcp-diagramming
Excalidraw MCP Diagramming
Create diagrams on a live Excalidraw canvas that renders in the browser and updates in real time. You are not generating a static file — you are painting onto a shared whiteboard through MCP tools. The canvas persists between calls, so what you put on it in one call is visible in the next screenshot.
When to Use
- The user asks to "create an excalidraw", "draw me a diagram", "make a flowchart", "visualise the system", or "diagram this architecture".
- The user wants an Excalidraw canvas output (not Draw.io / diagrams.net — use
drawio-mcp-diagrammingfor that). - The user wants to visualise an architecture, workflow, data flow, system design, mind map, or sequence diagram.
- The user asks to export a diagram to PNG, SVG,
.excalidrawfile, or a shareable URL. - The user asks to update, change, or fix an existing Excalidraw diagram.
Required MCP Server
The excalidraw MCP server must be present in .vscode/mcp.json:
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