How do I install the 172 Java Diagrams skill?

Run npx skillmds add majiayu000/172-java-diagrams in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

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Is 172 Java Diagrams free to use?

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Who published 172 Java Diagrams?

majiayu000 (@majiayu000) published this skill. Their other Agent Skills are listed on their SkillMD profile.

172 Java Diagrams by majiayu000 — Agent Skill

Name: 172 Java Diagrams
Rating: 4.2 (5 reviews)
Author: majiayu000

172 Java Diagrams

Use when you need to generate Java project diagrams — including UML sequence diagrams, UML class diagrams, C4 model diagrams, and UML state machine diagrams — through a modular, step-based interactive process that adapts to your specific visualization needs. Part of the skills-for-java project

majiayu000 fc388f7 2 files · 2.8 KB Updated Sep 9, 2026 567 repo stars

File contents

Java Diagrams Generator with modular step-based configuration

Generate comprehensive Java project diagrams through a modular, step-based interactive process that covers UML sequence diagrams, UML class diagrams, C4 model diagrams, and UML state machine diagrams using PlantUML syntax. This is an interactive SKILL.

What is covered in this Skill?

UML sequence diagram generation for application workflows and API interactions
UML class diagram generation for package structure and class relationships
C4 model diagram generation at Context/Container/Component levels only (levels 1–3; Code/Level 4 not generated)
UML state machine diagram generation for entity lifecycles and business workflows
PlantUML syntax for all diagram types
File organization strategies: single-file, separate-files, or integrated with existing documentation
Final diagram validation with PlantUML syntax checking

Constraints

Before applying any diagram generation, ensure the project validates. If validation fails, stop immediately — do not proceed until all validation errors are resolved.

MANDATORY: Run ./mvnw validate or mvn validate before applying any diagram generation
SAFETY: If validation fails, stop immediately — do not proceed until all validation errors are resolved
BEFORE APPLYING: Read the reference for detailed good/bad examples, constraints, and safeguards for each diagram generation pattern
C4 LIMIT: C4 diagrams restricted to levels 1, 2, 3 only (Context, Container, Component); never generate Level 4 (Code) diagrams

Reference

For detailed guidance, examples, and constraints, see references/172-java-diagrams.md.

---name: 172-java-diagramsdescription: Use when you need to generate Java project diagrams — including UML sequence diagrams, UML class diagrams, C4 model diagrams, and UML state machine diagrams — through a modular, step-based interactive process that adapts to your specific visualization needs. Part of the skills-for-java projectlicense: Apache-2.0---# Java Diagrams Generator with modular step-based configuration Generate comprehensive Java project diagrams through a modular, step-based interactive process that covers UML sequence diagrams, UML class diagrams, C4 model diagrams, and UML state machine diagrams using PlantUML syntax. **This is an interactive SKILL**. **What is covered in this Skill?** - UML sequence diagram generation for application workflows and API interactions - UML class diagram generation for package structure and class relationships - C4 model diagram generation at Context/Container/Component levels only (levels 1–3; Code/Level 4 not generated) - UML state machine diagram generation for entity lifecycles and business workflows - PlantUML syntax for all diagram types - File organization strategies: single-file, separate-files, or integrated with existing documentation - Final diagram validation with PlantUML syntax checking ## Constraints Before applying any diagram generation, ensure the project validates. If validation fails, stop immediately — do not proceed until all validation errors are resolved. - **MANDATORY**: Run `./mvnw validate` or `mvn validate` before applying any diagram generation - **SAFETY**: If validation fails, stop immediately — do not proceed until all validation errors are resolved - **BEFORE APPLYING**: Read the reference for detailed good/bad examples, constraints, and safeguards for each diagram generation pattern - **C4 LIMIT**: C4 diagrams restricted to levels 1, 2, 3 only (Context, Container, Component); never generate Level 4 (Code) diagrams ## Reference For detailed guidance, examples, and constraints, see [references/172-java-diagrams.md](references/172-java-diagrams.md).

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