mermaid

Name: mermaid
Availability: InStock
Author: cgm-free

Parse and render Mermaid diagrams within Markdown code blocks.

Updated Mar 16, 2026

Search Tags:#markdown #mermaid #flowchart #diagram #class-diagram #sequence-diagram #er-diagram

Ready to run

npx skills add https://github.com/cgm-free/ai-education-platform --skill mermaid-cgm-free

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: mermaid
Source: https://github.com/cgm-free/ai-education-platform/tree/main/.agents/skills/mermaid
Command: npx skills add https://github.com/cgm-free/ai-education-platform --skill mermaid-cgm-free

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Diagram-driven communication is essential for documenting complex systems, but Markdown environments often lack intuitive tooling to create and render diagrams. Mermaid provides a simple, code-based approach to generate a variety of diagrams directly in Markdown.

Core Features & Use Cases

Covers 23+ diagram types including flowcharts, sequences, class diagrams, ER diagrams, Gantt charts, mindmaps, and more, all renderable as Markdown code blocks.
Offers guidance on when to use Mermaid vs PlantUML and how to embed diagrams in README/docs for clear communication.
Provides practical syntax tips and examples to accelerate documentation and lightweight diagram workflows.

Quick Start

Wrap your Mermaid code in triple-backtick blocks labeled mermaid in your Markdown files to render diagrams in your documentation.

Frequently Asked Questions about mermaid

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

FAQPage Schema

How do I render Mermaid diagrams in Markdown documentation?▼

To render Mermaid diagrams in Markdown, wrap your diagram code in triple-backtick blocks labeled `mermaid`. This allows you to generate flowcharts, sequence diagrams, and ER diagrams directly within your docs.

What types of diagrams can I create using Mermaid in Markdown?▼

Mermaid supports over 23 diagram types in Markdown, including flowcharts, sequence diagrams, class diagrams, ER diagrams, Gantt charts, and mindmaps. These cover technical documentation, project specs, and architecture visualization.

When should I use Mermaid versus PlantUML for architecture diagrams?▼

Use Mermaid for lightweight, Markdown-native diagrams that render directly in code blocks without external tools. Choose PlantUML when you need more complex UML specifications or advanced layout control beyond standard documentation workflows.

Can I use Mermaid to add version-controlled visuals to project specs and APIs?▼

Yes, you can use Mermaid to add version-controlled visuals to project specs and APIs. By writing diagram code in Markdown, you track changes alongside text documentation in version control systems.

Does Markdown support rendering class and sequence diagrams without external plugins?▼

Markdown environments supporting Mermaid render class and sequence diagrams natively using labeled code blocks. This avoids external plugins, enabling quick visualization of complex information directly in README files.