Plantuml

Generate leftover PlantUML types Mermaid cannot do easily (Salt wireframes, use case, timing, ArchiMate, nwdiag, WBS) and convert them to PNG/SVG. Use when asked for a wireframe, PlantUML image export, extract puml from markdown, or prepare Confluence uploads. Class, ER, state, sequence, and C4 default to design-doc-mermaid on GitHub wiki.

59 stars 12 forksGit & Code Review

Install

skills CLI (Claude Code, Cursor, Codex and more)

npx skills add SpillwaveSolutions/plantuml --skill plantuml

Manual install

git clone --depth 1 https://github.com/SpillwaveSolutions/plantuml.git /tmp/plantuml
mkdir -p ~/.claude/skills
cp -r /tmp/plantuml/. ~/.claude/skills/plantuml

Personal skills live in ~/.claude/skills. Use .claude/skills in a project folder to share a skill with your team.

From the SKILL.md

# PlantUML Diagram Generation and Conversion

## Table of Contents

- [Purpose](#purpose)
- [When to Use This Skill](#when-to-use-this-skill)
- [Prerequisites](#prerequisites)
- [Creating Diagrams](#creating-diagrams)
  - [Diagram Type Identification](#diagram-type-identification)
  - [Resilient Workflow](#resilient-workflow-primary---recommended)
- [Converting Source Code to Diagrams](#converting-source-code-to-diagrams)
- [Converting Diagrams to Images](#converting-diagrams-to-images)
  - [Standalone .puml Files](#convert-standalone-puml-files)
  - [Markdown Processing](#extract-and-convert-from-markdown)
  - [Direct Command-Line Usage](#direct-command-line-usage)
- [Best Practices](#best-practices)
- [Troubleshooting](#troubleshooting)
- [References](#references)

## Purpose

This skill enables comprehensive PlantUML diagram creation and conversion workflows. PlantUML is a text-based diagramming tool that generates professional diagrams from simple, intuitive syntax.

**Core capabilities:**

1. Create diagrams from natural language descriptions
2. Convert source code to architecture diagrams (Spring Boot, FastAPI, Python ETL, Node.js, React)
3. Convert standalone `.puml` files to PNG or SVG images
4. Extract `puml` code blocks from markdown and convert to images
5. Process linked `.puml` files in markdown (`![diagram](path/to/diagram.puml)`)
6. Validate PlantUML syntax without conversion
7. Replace markdown diagrams with image links for publication (Confluence, Notion)

Read the full skill on GitHub

Details

Skill name: plantuml
Repository: SpillwaveSolutions/plantuml
Repo updated: 24 August 2026

FAQ

What does the Plantuml skill do?

How do I install the Plantuml skill?

skills CLI (Claude Code, Cursor, Codex and more): npx skills add SpillwaveSolutions/plantuml --skill plantuml. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.

Is Plantuml popular?

It lives in SpillwaveSolutions/plantuml, which has 59 GitHub stars and 12 forks.

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