UML Diagram Generator

Quick Start: Choose diagram type → Define classes/objects/actors → Add relationships/edges → Use appropriate shapes and arrow styles → Wrap in ```drawio fence.

⚠️ IMPORTANT: Always use ```drawio code fence. NEVER use ```xml — it will NOT render as a diagram.

Critical Rules

🔗 This is a drawio-derived skill. All structure, layout, and edge routing rules inherit from drawio SKILL.md. Read the base rules first.

UML-specific additions:

Use standard UML shapes: shape=umlLifeline, shape=umlActor, shape=component, swimlane;childLayout=stackLayout
Use fillColor=none; for package/component containers to avoid covering child elements

UML Diagram Types

Type	Purpose	Key Shape	Example
Class	Class structure and relationships	`swimlane;childLayout=stackLayout`	class-diagram.md
Sequence	Message interactions over time	`shape=umlLifeline`	sequence-diagram.md
Activity	Workflow and process flow	`rounded=1;arcSize=50`	activity-diagram.md
State Machine	Object lifecycle states	`rounded=1` with colors	state-machine-diagram.md
Component	System component organization	`shape=component`	component-diagram.md
Use Case	User-system interactions	`shape=umlActor`, `ellipse`	use-case-diagram.md
Deployment	Physical deployment architecture	`shape=cube;direction=south`	deployment-diagram.md
Object	Runtime object snapshot	`swimlane;fontStyle=4`	object-diagram.md
Package	Module organization	`shape=folder`	package-diagram.md
Communication	Object collaboration	`whiteSpace=wrap` with numbered messages	communication-diagram.md
Composite Structure	Internal class structure	`shape=ellipse;container=1;dashed=1`	composite-structure-diagram.md
Interaction Overview	Activity + sequence combination	`shape=umlFrame`	interaction-overview-diagram.md
Timing	State changes over time	`shape=waypoint`	timing-diagram.md
Profile	UML extension mechanisms	`<<stereotype>>` labels	profile-diagram.md

uml

UML Diagram Generator

Critical Rules

UML Diagram Types