mermaid-diagrams

Generate software diagrams from Mermaid text-based syntax.

9|2|Updated Jan 29, 2026
One-click install
npx skills add https://github.com/stephanj/claude-code-collections --skill mermaid-diagrams-stephanj
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: mermaid-diagrams
Source: https://github.com/stephanj/claude-code-collections/tree/main/skills/mermaid-diagrams
Command: npx skills add https://github.com/stephanj/claude-code-collections --skill mermaid-diagrams-stephanj

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill solves the challenge of maintaining complex software documentation by allowing you to create, version-control, and update professional diagrams using simple text syntax instead of cumbersome drag-and-drop tools.

Core Features & Use Cases

  • Multi-Format Support: Generate class diagrams, sequence diagrams, flowcharts, ERDs, and C4 architecture models.
  • Living Documentation: Keep diagrams in sync with your codebase by storing them as text files alongside your source code.
  • Use Case: Quickly document a new API authentication flow for your team by generating a sequence diagram that renders automatically in your pull request.

Quick Start

Use the mermaid-diagrams skill to generate a sequence diagram showing the authentication flow between the user, the API, and the database.

Frequently Asked Questions about mermaid-diagrams

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

FAQPage Schema
How do I generate sequence diagrams for API authentication flows using text?

You can visualize system architecture using Mermaid text syntax by defining components, data models, and application flows as text definitions. These text definitions render automatically into professional visual diagrams within environments supporting standard Mermaid.js rendering.

Can I version-control software documentation diagrams alongside my source code?

Yes, you can version-control software documentation diagrams by storing them as text files alongside your source code. This approach creates living documentation that stays in sync with your codebase and updates directly within your pull requests.

What types of software architecture and data models can I create with text-based diagrams?

Text-based diagrams support generating class diagrams, sequence diagrams, flowcharts, ERDs, and C4 architecture models. These formats cover technical documentation, design reviews, and onboarding materials across various software development domains.

Does Mermaid require specific rendering support to visualize complex systems?

Yes, visualizing complex systems with Mermaid requires standard Mermaid.js rendering support in your target environment to convert text definitions into visual diagrams. Without this support, the text syntax remains unrendered.

What is the best way to maintain complex software documentation without drag-and-drop tools?

Maintaining complex software documentation without drag-and-drop tools is best achieved by creating, version-controlling, and updating professional diagrams using simple text syntax. This approach keeps diagrams in sync with your codebase as living documentation.