mermaid-diagrams

Create, edit, and fix Mermaid diagrams from natural language prompts.

3|Updated Oct 9, 2025
One-click install
npx skills add https://github.com/bengous/claude-code-plugins --skill mermaid-diagrams-bengous
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: mermaid-diagrams
Source: https://github.com/bengous/claude-code-plugins/tree/main/mermaid-diagrams/skills/mermaid-diagrams
Command: npx skills add https://github.com/bengous/claude-code-plugins --skill mermaid-diagrams-bengous

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes assets (resource) and references (resource) components.

What problem does it solve?

This Skill helps engineers and teams quickly visualize software architectures and data models by generating Mermaid diagrams from natural language prompts, reducing back-and-forth and miscommunication.

Core Features & Use Cases

  • Template-based diagrams: Start from templates for flowcharts, sequences, class diagrams, ER diagrams, and C4 diagrams.
  • Reference-guided styling: Loads references to ensure correct Mermaid syntax and best practices.
  • Use Case: Quickly illustrate a new microservice by producing a C4 Container or Context diagram you can drop into documentation.

Quick Start

To get started, describe the diagram you want, e.g., "Show me a mermaid flowchart of the user signup flow" or "Create a class diagram for the shopping cart domain." Then the Skill will generate a Mermaid code snippet ready to paste into your docs.

Frequently Asked Questions about mermaid-diagrams

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

FAQPage Schema
How do I create a flowchart diagram to visualize a software process?

Flowchart diagrams use Mermaid syntax to map decision points and process steps visually. Describe your workflow—signup flow, data pipeline, or system process—and the Skill generates a ready-to-use Mermaid code block with proper syntax and structure you can embed directly into documentation.

Can I use Mermaid diagrams to document software architecture?

Yes. Mermaid supports C4 diagrams, sequence diagrams, and class diagrams for architecture documentation. The Skill generates template-based diagrams that illustrate microservices, system interactions, and domain models with correct syntax and styling conventions.

What types of diagrams can Mermaid create?

Mermaid diagrams include flowcharts, sequence diagrams, class diagrams, ER diagrams, state diagrams, C4 diagrams, and Git graphs. The Skill generates each type from natural language descriptions, applying proper syntax and references to ensure compatibility and best practices.

How do I fix incorrect Mermaid diagram syntax?

The Skill edits and improves existing Mermaid diagrams by validating syntax against Mermaid standards and references. Paste your diagram code and describe the issue or desired change; the Skill corrects syntax errors and enhances structure.

Do I need to know Mermaid syntax to create diagrams?

No. Describe the diagram you want in natural language—the system's architecture, data relationships, or process flow—and the Skill generates syntactically correct Mermaid code. You don't need to write or understand Mermaid syntax manually.

What's the best way to visualize data models and relationships?

ER diagrams in Mermaid clearly map entities, attributes, and relationships for databases and domain models. The Skill generates template-based ER diagrams from descriptions of your data structure, producing documentation-ready code with proper cardinality and relationship notation.