umlet

umlet diagram (uml-mcp)

diagram_type: umlet
Backend: umlet
Output formats: png, svg, jpeg

UMLet UML diagrams from UXF XML source

Load the workflow skill uml-mcp-diagrams for URL-first replies, progressive discovery, and which MCP tool to call. This file is notation only; it does not add an MCP tool.

Notation tips

• Source is UMLet UXF XML (<umlet_diagram> + <element> with panel_attributes).
• Class boxes: name, --, then attributes/methods. Visibility is a single + / - / # (never ++ — UMLet treats ++ as invalid and clips).
• Size <w> ≥ ~8× longest line length (zoom 10) or labels clip at the box edge.

Styling

• UXF has no theme switch; sizing and +/-/# visibility are the polish.
• No MCP theme param.

Starter template

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<umlet_diagram>
  <zoom_level>10</zoom_level>
  <element>
    <id>UMLClass</id>
    <coordinates>
      <x>10</x>
      <y>10</y>
      <w>160</w>
      <h>80</h>
    </coordinates>
    <panel_attributes>Hello
--
+world()
</panel_attributes>
    <additional_attributes/>
  </element>
</umlet_diagram>

Example

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<umlet_diagram>
  <zoom_level>10</zoom_level>
  <element>
    <id>UMLClass</id>
    <coordinates>
      <x>10</x>
      <y>10</y>
      <w>180</w>
      <h>90</h>
    </coordinates>
    <panel_attributes>Account
--
-balance: decimal
+deposit()
</panel_attributes>
    <additional_attributes/>
  </element>
</umlet_diagram>

Render with uml-mcp

1. Set diagram_type to umlet exactly.
2. Call validate_uml when the source is untrusted (prefer strict: true for Mermaid sequence).
3. Call generate_uml, generate_uml_image (chat PNG), or generate_uml_batch.
4. Pass theme when this skill's Themes section lists supported values.
5. Surface the returned url / playground (see the workflow skill).