Mermaid Awesome Diagram Generator
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About this skill
Why It Helps
When an agent explains dependencies, states, or flows in prose, a Mermaid diagram is often clearer. The hard part is not just producing a diagram, but choosing the right type, using valid syntax, quoting labels with punctuation, and avoiding renderer-specific styling.
How It Works
This skill keeps the output Markdown-native Mermaid source:
- Extract entities, states, messages, decisions, or dependencies from the request and context.
- Choose the smallest suitable type: flowchart, sequenceDiagram, stateDiagram-v2, classDiagram, erDiagram, or another Mermaid declaration.
- Generate syntactically complete source with stable node identifiers, concise labels, and quoted labels when punctuation appears.
- Validate and render when a Mermaid renderer is available, then deliver it as a fenced mermaid block or file.
Boundaries
It fits READMEs, design docs, and architecture notes. Use another skill for strict UML, detailed C4, or ProcessOn hosted editing. Do not let it invent missing dependencies or states just to make the diagram look complete.
Use Cases
- Add a `sequenceDiagram` to a README to describe request, response, and timeout branches in a service call chain.
- Draw a deployment process as `flowchart LR` with input, validation, processing, and rejection branches.
- Create a `stateDiagram-v2` for state lifecycle, events, and transitions in a design document.
- Generate a lightweight Mermaid architecture diagram to show module dependencies instead of prose.
Best For
- Engineers writing READMEs or design docs who need renderable Mermaid source for flows, dependencies, and states.
- Technical writers maintaining architecture notes who need to turn module relationships into Markdown diagrams.
- Developer-experience engineers building agent workflows who want the model to choose valid Mermaid types and labels.
- Documentation engineers delivering files who need Mermaid diagrams saved as properly fenced Markdown blocks.
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