Does it support non-UML visualizations?

Yes, it provides syntax for JSON/YAML structures, Gantt charts, MindMaps, WBS, and Network diagrams (nwdiag).

Does this skill generate the actual image file?

This skill provides the precise text-based syntax required for diagrams; you can use a PlantUML CLI, Docker container, or online server to render the resulting code into image files.

Can I use this for C4 model architecture diagrams?

Yes, it includes specific syntax patterns and include-statements for C4 Context and Component diagrams to help visualize high-level system architecture.

Do I need to install Java to use this skill?

The skill itself provides the syntax reference within Claude, but to render the diagrams locally, you typically need a Java Runtime Environment (JRE) and GraphViz.

What UML diagrams are covered by this skill?

The reference covers all major UML types including Sequence, Class, Use Case, Activity, Component, Deployment, and State diagrams.

PlantUML Syntax Reference

Name: PlantUML Syntax Reference
Author: melodic-software

bymelodic-software

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Learning & Documentation

Provides a comprehensive reference for creating professional UML and architectural diagrams using PlantUML text syntax.

This skill equips Claude with an authoritative reference for PlantUML, enabling the generation of high-quality technical diagrams from text descriptions. It covers over 15 diagram types, ranging from standard UML models like Sequence and Class diagrams to specialized visualizations such as C4 architecture, Gantt charts, and ER diagrams. It is an essential tool for developers and architects who want to integrate version-controlled documentation into their workflow and visualize complex system logic without leaving their development environment.

Key Features

011 GitHub stars

02Detailed guidance for Sequence, Class, Activity, and State diagrams

03Comprehensive syntax reference for 15+ UML and non-UML diagram types

04Support for advanced architectural modeling including C4 and ArchiMate

05Templates for visualizing data structures like JSON, YAML, and Network topologies

06Includes best practices for styling, skinparams, and diagram customization

Use Cases

01Creating C4 system context diagrams to communicate architecture to stakeholders

02Visualizing database schemas and class hierarchies during the design phase

03Documenting complex API sequences and authentication flows directly from code

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add melodic-software/claude-code-plugins plantuml-syntax

For use in Claude.ai and ChatGPT

Download Skill