umple-diagram-generator

Installation
SKILL.md

Umple Diagram Generator

Supported diagram types

Type language value Read first
Class diagram classDiagram references/class-diagram-syntax.md
State machine stateDiagram references/state-machine-syntax.md
ER diagram entityRelationshipDiagram references/class-diagram-syntax.md
Trait diagram traitDiagram references/class-diagram-syntax.md

Workflow

  1. Read the syntax reference for the requested diagram type.
  2. Write valid Umple code.
  3. Call the Umple Online API (see below).
  4. Extract SVG from the response and save to a .svg file.
  5. On error, read the message, fix the code, retry (up to 3 times).
  6. Render the SVG inline for the user.
Installs
15
GitHub Stars
2
First Seen
Jan 22, 2026