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c4-model

Standardize software architecture documentation with C4 Model diagrams.

5|1|Updated Jun 17, 2026
Search Tags:#mermaid#plantuml#software-architecture#system-design#c4-model#structurizr#architecture-diagramming
One-click install
npx skills add https://github.com/roanbrasil/engineer-grade-agent-skills --skill c4-model-roanbrasil
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: c4-model
Source: https://github.com/roanbrasil/engineer-grade-agent-skills/tree/main/skills/c4-model
Command: npx skills add https://github.com/roanbrasil/engineer-grade-agent-skills --skill c4-model-roanbrasil

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Software teams often produce architecture diagrams that are either too technical for business stakeholders or too vague for engineering teams, leading to misalignment, outdated documentation, and wasted time explaining system design to different audiences.

Core Features & Use Cases

  • Multi-level diagram support: Create Context, Container, Component, and Code level diagrams tailored to different audiences, from product managers to backend engineers.
  • Multi-tool compatibility: Generate diagrams using PlantUML, Mermaid, or Structurizr DSL to match your team's existing tooling.
  • Quality guardrails: Built-in checklists, anti-pattern guidance, and best practices ensure diagrams are accurate, maintainable, and serve their intended purpose.
  • Use Case: Document a new microservices e-commerce platform's architecture for stakeholder alignment (system context), DevOps planning (container diagram), and developer onboarding (component diagram).

Quick Start

Use the c4-model skill to generate a system context diagram for your new payment processing service, including all external user and system dependencies.

Frequently Asked Questions about c4-model

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

FAQPage Schema
How do I create C4 architecture diagrams for different stakeholders?▼

Generate C4 architecture diagrams by applying four distinct abstraction levels: Context, Container, Component, and Code. This model delivers audience-appropriate visualizations, ensuring business stakeholders receive high-level overviews while developers get granular component details.

Can I generate system design diagrams using Mermaid and PlantUML syntax?▼

Yes, generate system design diagrams using Mermaid, PlantUML, and Structurizr DSL. The skill provides specific syntax templates for each tool, allowing seamless integration with your existing architecture diagramming workflows and documentation pipelines.

What is the best way to document software architecture for developer onboarding?▼

Document software architecture for onboarding using the C4 model's Component level. This standardizes system design visualization into maintainable diagrams with built-in quality guardrails, preventing anti-patterns and ensuring new developers quickly grasp structural dependencies.

Does the C4 model work for documenting microservices architecture?▼

Yes, the C4 model works effectively for microservices architecture. It standardizes documentation across Context, Container, and Component levels, aligning stakeholders on system boundaries while providing DevOps teams with container diagrams for deployment planning.

What are common anti-patterns to avoid when creating architecture diagrams?▼

Common architecture diagram anti-patterns include mixing abstraction levels and overloaded visuals. The C4 model enforces diagram quality rules and checklists to prevent these issues, ensuring documentation remains accurate, maintainable, and purpose-driven.

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