plantuml-skill
10+ diagram types via the Kroki rendering API — no Java, no Graphviz, no local install. Local Docker and plantuml.jar fallbacks ship in the box.
/plugin marketplace add Agents365-ai/365-skills
Generated from one natural-language prompt — full prompt in the README.
Why This Skill
LLMs know PlantUML syntax. The skill adds the rendering pipeline, common-mistakes guard rails, and a 3-backend story so you can render anywhere.
10+ Diagram Types
Sequence, component, class, ER, activity, use case, state, C4, mind map, gantt — each with idiomatic syntax templates and shape vocabularies.
Three Rendering Backends
Public Kroki API (zero install), local Kroki via Docker (offline), or plantuml.jar + Java (air-gapped). Pick what fits.
Built-in Themes
plain, cerulean, blueprint, aws-orange, vibrant — plus full skinparam overrides for custom styling.
C4 That Actually Works
The public PlantUML server's !include directives often 404. The skill uses Kroki's c4plantuml endpoint with stitched includes — reliable by default.
Mistake-Aware
Curated 9-row Common Mistakes table: arrow direction, layout overflow, label escaping, participant ordering, C4 include trap, and more.
Zero-Install Default
curl ships on macOS, Linux, and Windows (Git Bash / WSL). No Node, no Java, no setup.
Install
Pick your platform. Takes 10 seconds.
# Plugin marketplace (recommended) /plugin marketplace add Agents365-ai/365-skills /plugin install plantuml # Or any agent npx skills add Agents365-ai/365-skills -g # Manual install git clone https://github.com/Agents365-ai/plantuml-skill.git ~/.claude/skills/plantuml-skill
# Global git clone https://github.com/Agents365-ai/plantuml-skill.git ~/.config/opencode/skills/plantuml-skill # Project git clone https://github.com/Agents365-ai/plantuml-skill.git .opencode/skills/plantuml-skill
# Global git clone https://github.com/Agents365-ai/plantuml-skill.git ~/.openclaw/skills/plantuml-skill
# Via SkillsMP CLI skills install plantuml-skill
# User-level git clone https://github.com/Agents365-ai/plantuml-skill.git ~/.agents/skills/plantuml-skill # Project-level git clone https://github.com/Agents365-ai/plantuml-skill.git .agents/skills/plantuml-skill
Related Skills
Part of the Agents365-ai diagram-skill family — pick the right tool for the job.
drawio-skill
Professional / vector — architecture, ML/DL, ER diagrams with a self-check loop.
excalidraw-skill
Hand-drawn / sketchy — whiteboard mockups, informal diagrams.
mermaid-skill
Text-based, auto-layout — README-embeddable, version-control friendly.
tldraw-skill
Whiteboard collaboration — casual sketches, FigJam-style boards.
Support
If this skill helps you, consider supporting the author.
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