C4 Architecture

by softaworks

C4 Architecture is a Writing skill for Claude Code, published by softaworks in agent-toolkit.

2.4K stars219 forkson softaworks/agent-toolkitAdded 2026/08/18+1% in starsRepository updated 2026/03/05

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Install in seconds

Install C4 Architecture

Copy C4 Architecture into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/softaworks/agent-toolkit/tree/main/skills/c4-architecture ~/.claude/skills/c4-architecture

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/softaworks/agent-toolkit.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/c4-architecture/SKILL.md in softaworks/agent-toolkit
Installs to: ~/.claude/skills/c4-architecture
Collection: One of 25 skills cataloged from this repository
Category: Writing — 1012 skills

What C4 Architecture does

C4 Architecture generates C4 model diagrams in Mermaid syntax for documenting software architecture at context, container, component, and deployment levels. Use it when you need to visualize system structure or communicate architecture to technical and non-technical audiences.

C4 Architecture is cataloged under Writing on DirSkills. C4 Architecture comes from a repository tagged agent-skills, ai, automation, claude and claude-code.

Documentation

README

Excerpt

C4 Architecture Documentation

Generate software architecture documentation using C4 model diagrams in Mermaid syntax.

Workflow

Understand scope - Determine which C4 level(s) are needed based on audience
Analyze codebase - Explore the system to identify components, containers, and relationships
Generate diagrams - Create Mermaid C4 diagrams at appropriate abstraction levels
Document - Write diagrams to markdown files with explanatory context

C4 Diagram Levels

Select the appropriate level based on the documentation need:

This is the opening of the README. Read the full README on GitHub.

Frequently asked about C4 Architecture

What else does softaworks publish alongside C4 Architecture?
C4 Architecture is one of 25 skills that DirSkills catalogs from softaworks/agent-toolkit, the repository it ships in. Its siblings there include 10x Mode, Add Skill and Agent MD Refactor. Each one is a separate skill with its own page in this directory, installs the same way C4 Architecture does, and is maintained by softaworks in that same repository. The rest of the collection is listed on the softaworks/agent-toolkit page.
How does C4 Architecture compare to other Writing skills?
C4 Architecture ranks #255 by stars among the 1012 Writing skills in this catalog. The most-starred ones next to it are Article Writing, Social Media Content Calendar and Knowledge Comic Creator. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of C4 Architecture against them. Open each page to compare what they document and how they install.