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Create UML diagrams and architecture visualizations with PlantUML
Passed 18 of 22 test cases with the skill, and 13 of 22 without it.
and 7 more in the full report
5 fixed13 passed either way4 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 5 test cases the skill fixed. Same model, same prompt, with and without the skill.
Create a flowchart for a simple checkout process: initiate, check cart contents. If empty, show an alert; if not empty, proceed to payment. Then conclude the process. Use the syntax specifically prescribed for modeling workflows.
| Checked | Without skill | With skill |
|---|---|---|
| uses the start keyword to denote the beginning of the workflow | Missed | Passed |
| uses the stop keyword to terminate the workflow | Missed | Passed |
| places the condition text inside parentheses directly following the if statement | Missed | Passed |
The instructions your model reads when the skill loads.
Create UML diagrams, architecture visualizations, flowcharts, and other technical diagrams using PlantUML's text-based notation for reproducible, version-controllable diagrams.
PlantUML generates diagrams from plain text descriptions. Diagrams are defined in .puml files and rendered to PNG, SVG, or PDF.
| Method | Command / URL | Best For |
|---|---|---|
| VS Code extension | Install "PlantUML" by jebbs | IDE integration |
| CLI (Java JAR) | java -jar plantuml.jar diagram.puml | Batch processing |
| Online server | plantuml.com/plantuml | Quick prototyping |
| Docker | docker run plantuml/plantuml-server | Self-hosted server |
| Python | pip install plantuml | Python integration |
| Jupyter | pip install iplantuml | Notebook integration |
@startuml
title My First Diagram
Alice -> Bob: Hello
Bob --> Alice: Hi there!
@enduml
Model interactions between components over time:
@startuml
title Research Paper Submission Workflow
actor Author
test cases passed, vs 13 / 22 without
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