mermaid-diagrams

Generate Mermaid diagram syntax for flowcharts, sequence, ER, and C4 diagrams.

Updated Aug 23, 2026
One-click install
npx skills add https://github.com/junevm/avtoolz --skill mermaid-diagrams-junevm
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: mermaid-diagrams
Source: https://github.com/junevm/avtoolz/tree/main/.agents/skills/mermaid-diagrams
Command: npx skills add https://github.com/junevm/avtoolz --skill mermaid-diagrams-junevm

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Mermaid Diagrams helps you convert architecture and process thinking into readable, shareable visuals without leaving Markdown.

Core Features & Use Cases

  • Flowchart generation: Define directed flow with subgraphs, edge labels, and styling for clearer logic.
  • System documentation: Produce sequence diagrams to show request/response flows, ERDs for data modeling, and class diagrams for relationships.
  • Extended diagram types: Create timelines, Gantt charts, Sankey/XY/quadrant charts, Kanban boards, packet/requirement diagrams, and C4 context/container/component/deployment views.

Quick Start

Use the mermaid-diagrams skill to generate a Mermaid flowchart, sequence diagram, ERD, or C4 diagram inside your documentation from the description you provide.

Frequently Asked Questions about mermaid-diagrams

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

FAQPage Schema
How do I generate architecture diagrams in Markdown without using image editors?

You can generate architecture diagrams in Markdown by writing Mermaid syntax. This approach converts textual descriptions of system structures and data flows into readable diagrams that render directly inside Markdown documentation.

Can I create C4 model diagrams for system documentation using Mermaid?

Yes, you can create C4 model diagrams using Mermaid syntax. It supports generating context, container, component, and deployment views to document software architecture directly within Markdown files.

What types of workflow and data model diagrams can I build with Mermaid?

Mermaid allows you to build diverse workflow and data model diagrams including flowcharts, sequence diagrams, ER diagrams, class diagrams, state diagrams, Gantt charts, and Kanban boards from text descriptions.

Does Mermaid syntax support extended chart types like Sankey and XY charts?

Mermaid syntax supports extended chart types like Sankey, XY charts, quadrant charts, timelines, packet diagrams, and requirement diagrams. These are generated using specific declarations and keywords for reliable rendering.

Why does my generated Mermaid diagram fail to render correctly?

Mermaid diagrams fail to render when syntax rules for node and edge structures, cardinality, or required keywords are incorrect. Generating correct Mermaid declarations ensures diagrams render reliably without formatting errors.

How do I document request and response flows in Markdown?

To document request and response flows in Markdown, you can generate Mermaid sequence diagrams. They map out interactions between system components over time using a text-based syntax that renders visually.