Mermaid Standards

Standardize Mermaid diagrams in technical design documents with syntax conventions.

Updated Dec 7, 2025
One-click install
npx skills add https://github.com/phamtiendatbg92/ai-gent-for-java --skill mermaid-standards
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: Mermaid Standards
Source: https://github.com/phamtiendatbg92/ai-gent-for-java/tree/main/.claude/skills/mermaid-standards
Command: npx skills add https://github.com/phamtiendatbg92/ai-gent-for-java --skill mermaid-standards

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill provides standardized conventions for creating Mermaid diagrams in technical design documents.

Core Features & Use Cases

  • Default Theme: Use Mermaid's built-in default theme to ensure consistent visuals.
  • Diagram Types: Class, Sequence, and Flowchart conventions with examples.
  • Use Case: When documenting system architecture, apply these conventions to generate diagrams that render natively in Markdown viewers.

Quick Start

Refer to diagram-conventions.md for the exact syntax and examples, then start including Mermaid blocks in your design documents.

Frequently Asked Questions about Mermaid Standards

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I create consistent Mermaid diagrams for technical design documents?

Mermaid diagrams benefit from standardized conventions to ensure visual and syntactic consistency across design documentation. This Skill provides a default theme, stereotype markers (<<new>>, <<modified>>, <<existing>>), and diagram-type-specific conventions for class, sequence, and flowchart diagrams that render natively in Markdown.

What are the best practices for structuring class and sequence diagrams in Mermaid?

Diagram-type-specific conventions standardize how you represent relationships, interactions, and structural elements. This Skill documents exact syntax patterns, stereotype usage, and error handling paths for class diagrams, sequence diagrams, and flowcharts to maintain consistency across your technical documentation.

Can I use Mermaid flowcharts and class diagrams in Markdown design docs?

Yes. Mermaid diagrams render natively in Markdown viewers. This Skill provides standardized conventions—default theming, consistent syntax, and stereotype markers—so your flowcharts, class diagrams, and sequence diagrams display uniformly and integrate seamlessly into design documentation.

How do I document system architecture and interactions using Mermaid diagrams?

Mermaid supports architecture visualizations and system flow documentation through flowcharts and sequence diagrams. This Skill enforces standardized conventions including error handling paths, consistent naming patterns, and theme defaults so architecture and interaction diagrams communicate clearly across teams.

What should I include in a Mermaid diagram to show new, modified, and existing components?

Stereotype markers clarify component status and lifecycle in design diagrams. This Skill standardizes the use of <<new>>, <<modified>>, and <<existing>> stereotypes in class and sequence diagrams to make system changes and dependencies explicit in technical documentation.

Why use a consistent Mermaid theme across design documents?

Consistent theming ensures all diagrams in technical documentation render with uniform styling, improving readability and professionalism. This Skill applies Mermaid's built-in default theme and syntax patterns so your diagrams maintain visual consistency without manual formatting adjustments.