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c4-syntax

Complete syntax reference for Mermaid C4 diagrams. Compatible with PlantUML C4 syntax.

  • Skills
  • Creative design
  • 2

What it does and how to use it

A skill that teaches Claude Code to do creative design tasks well. It is packaged knowledge the model uses whenever it is relevant.

  1. Install the skill (command above).
  2. In Claude Code, describe what you need - the skill turns on by itself when the context fits.
  3. No commands to memorize: you talk in plain language and the skill does the rest.

Install (Claude Code)

mkdir -p .claude/skills/c4-syntax && curl -fsSL https://doutorai.pt/data/lib/skills__c4-syntax.md -o .claude/skills/c4-syntax/SKILL.md

Paste this command into the terminal, in your project folder, and the component installs automatically.

Content

# C4 Mermaid Diagram Syntax Reference

Complete syntax reference for Mermaid C4 diagrams. Compatible with PlantUML C4 syntax.

## Table of Contents

1. [Diagram Types](#diagram-types)
2. [System Context Elements](#system-context-elements)
3. [Container Elements](#container-elements)
4. [Component Elements](#component-elements)
5. [Deployment Elements](#deployment-elements)
6. [Relationship Types](#relationship-types)
7. [Boundaries](#boundaries)
8. [Styling](#styling)
9. [Layout Configuration](#layout-configuration)
10. [Parameter Syntax](#parameter-syntax)
11. [Complete Examples](#complete-ex

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