hand-drawn-diagrams

---

name: hand-drawn-diagrams description: "Create hand-drawn Excalidraw diagrams, flows, explainers, wireframes, and page mockups. Default to monochrome sketch output; allow restrained color only for page mockups when the user explicitly wants webpage-like fidelity. Use when the user asks for a diagram, flowchart, wireframe, sketch, visual explanation, mind map, architecture overview, or any Excalidraw-based drawing."

Follow the instructions in ./workflow.md.

Workflow

1. Route — Read ./steps/step-01-route.md. Pick one diagram type from the routing table (references/activation-routing.xml) based on user intent (teach, brainstorm, UX flow, funnel, technical explainer, medical, creative, or page mockup).
2. Draw — Read ./steps/step-02-draw.md. Design the diagram using the shared shape grammar (references/fundamental-shapes.md), then write the .excalidraw JSON file with a non-empty elements array to /tmp/hand-drawn-diagrams/<slug>/.
3. Validate & Deliver — Read ./steps/step-03-validate.md. Run scripts/validate_excalidraw.py, then scripts/open_diagram.py to generate a hosted edit URL and open it in the browser. Offer animation and PNG as follow-ups.

Key Rules

• Hand-drawn style, same sketch font, monochrome by default
• Labels: 1–5 words per shape; max 3 short bullets per container
• Write .excalidraw files to /tmp/, not the user's workspace (unless they ask)
• Always validate before generating URLs — never share an empty diagram
• Rendering priority: Chrome DevTools MCP (fast) → Playwright (fallback)

References

• references/index.md — full reference index
• references/activation-routing.xml — route selection rules and delivery modes
• references/fundamental-shapes.md — core shape language

Optional: Chrome DevTools MCP

For fast PNG and animated SVG rendering, install chrome-devtools-mcp (uses a real browser, no Playwright needed). See INSTALL.md for setup. Without it, rendering falls back to Playwright.