How to Auto-Generate System Architecture Diagrams from Code (Miro MCP + Claude Code)

Nov 4, 2025

Ever tried to explain a complex server architecture and wished you could just... automatically generate the diagrams? In this demo, we show an incredibly powerful tool that does exactly that.

We use a single command (miro-mcp:code_explain_on_board) to point Miro's MCP Server and Claude Code at a local server codebase.

In just a few minutes, the AI analyzes the code and generates four comprehensive, detailed diagrams directly on our Miro board:

  • A high-level System Architecture Diagram
  • A detailed Request Sequence Diagram
  • An "MCP Server Tools" Mind Map
  • A Middleware & Authentication Flowchart

This is a game-changer for onboarding new engineers, documenting existing systems, and keeping visual documentation in sync with your code. Watch to see how it works!

Chapters:

00:00 - The Final Result: 4 AI-Generated Diagrams

00:31 - How It's Done: The Terminal

00:46 - Running the 'Explain Code on Board' Command

01:03 - Claude AI Analyzes the Local Codebase

01:23 - Generation Complete: Summary of Outputs

02:01 - Diagram 1: System Architecture Diagram

03:00 - Diagram 2: Server Tools Mind Map

03:23 - Diagram 3: Request Sequence Diagram

04:20 - Diagram 4: Middleware & Authentication Flowchart

04:36 - Conclusion: Why This Is a Game-Changer

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