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UML-MCP Diagram Server
MCPOpen SourceMIT49.9
by antoinebou12 • Visualization & Charts
An MCP server that generates UML and other diagrams (Mermaid, D2, Graphviz, etc.) for AI assistants and developer tools, producing SVG/PNG/PDF outputs via Kroki or PlantUML.
Example Use Cases
- 1
Generate UML class, sequence, activity, or other diagrams from text or code and obtain rendered image outputs.
- 2
Render diagrams using Kroki or PlantUML (local or remote) into SVG/PNG/PDF and save them to a specified output directory.
- 3
Integrate diagram generation into editor workflows (e.g., Cursor, Claude Desktop) via the Model Context Protocol for automated in-editor diagram creation.
Description
UML-MCP is an open-source MCP-compatible server that generates a wide range of diagrams (UML class, sequence, activity, Mermaid, D2, Graphviz, ERD, and more). It integrates with Kroki and PlantUML (local or remote) to render diagrams into multiple formats (SVG, PNG, PDF) and exposes tools and resources via the UML-MCP interface. The server is modular, provides templates/examples, and can be integrated into editors like Cursor and Claude Desktop or used by LLM assistants via the Model Context Protocol for automated diagram creation.
Capabilities(19 total)
Tools (1)
generate_uml
Generate any UML or diagram by type (class, sequence, mermaid, d2, etc.)
diagram_type:string*code:string*output_dir:anyoutput_format:stringtheme:any
Prompts (10)
uml_diagram
Base prompt for UML diagram generation Args: context: Dictionary containing context information Returns: The prompt text
context
uml_diagram_with_thinking
Prompt for generating UML diagrams with plan-then-generate. Same workflow as uml_diagram (plan first, then generate code and call generate_uml).
context
class_diagram
Prompt for generating UML class diagrams Args: context: Dictionary containing context information Returns: The prompt text
context
sequence_diagram
Prompt for generating UML sequence diagrams Args: context: Dictionary containing context information Returns: The prompt text
context
activity_diagram
Prompt for generating UML activity diagrams Args: context: Dictionary containing context information Returns: The prompt text
context
Resources (8)
get_diagram_types
Get available diagram types
URI: uml://typesMIME: text/plain
get_diagram_templates
Get diagram templates for different diagram types
URI: uml://templatesMIME: text/plain
get_diagram_examples
Get diagram examples for different diagram types
URI: uml://examplesMIME: text/plain
get_output_formats
Get supported output formats for each diagram type
URI: uml://formatsMIME: text/plain
get_server_info
Get MCP server information
URI: uml://server-infoMIME: text/plain
Quick Actions
Security
Scanned 3 month(s) agoRisk Level
MINIMAL
Read-only data retrieval, no side effects
Trust Score
C56/100
8/17 checks passed
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Quick Stats
Service TypeMCP
Pricing ModelFree
Capabilities1 Tools / 10 Prompts / 8 Resources
Ownerantoinebou12
CategoryVisualization & Charts
DependenciesStandalone
Tags
DiagrammingVisualizationEditor Integration