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Get Started Free →automateyournetwork/uml-diagram
UML and diagram generation via Kroki — class, sequence, activity, state, component, deployment, network, ER, C4, Mermaid, D2, Graphviz, BPMN, 27+ types.
Passed 12 of 20 test cases with the skill, and 4 of 20 without it.
and 7 more in the full report
10 fixed4 passed either way8 still failing1 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 10 test cases the skill fixed. Same model, same prompt, with and without the skill.
I want to render a PlantUML sequence diagram using a specific dark theme directive. How should the theme parameter be supplied when calling the diagram generator tool?
| Checked | Without skill | With skill |
|---|---|---|
| Supplies the theme directive using the theme parameter of generate_uml | Missed | Passed |
The instructions your model reads when the skill loads.
| Property | Value |
|---|---|
| Source | antoinebou12/uml-mcp |
| Transport | stdio (default) or HTTP |
| Tools | 2 (generate_uml, generate_diagram_url) |
| Resources | 8 (diagram types, templates, examples, formats, server info) |
| Prompts | 11 (class, sequence, activity, usecase, Mermaid, BPMN, etc.) |
| Rendering | Kroki (primary) with PlantUML and Mermaid.ink fallback |
generate_umlGenerate a diagram and optionally save to disk.
| Parameter | Type | Default | Description |
|---|---|---|---|
diagram_type | string | required | Diagram type (class, sequence, mermaid, d2, graphviz, etc.) |
code | string | required | Diagram source code |
output_dir | string | null | Directory to save file (null = no file write) |
output_format | string | "svg" | Output format: svg, png, pdf, jpeg, txt, base64 |
theme | string | null | PlantUML theme directive |
scale | float | 1.0 | SVG scaling factor (min 0.1) |
Returns: { code, url, playground, local_path, content_base64, error }
generate_diagram_urlGet the Kroki rendering URL and optional base64 content without saving to disk.
| Parameter | Type | Default | Description |
|---|---|---|---|
diagram_type | string | required | Diagram type |
code | string | required | Diagram source code |
output_format | string | "svg" | Output format |
theme | string | null | PlantUML theme |
test cases passed, vs 4 / 20 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.