C4 Architecture C4 Architecture

This is a systematic workflow for generating C4 architecture documentation from an existing codebase. It takes a bottom-up approach, starting with code-level analysis of every directory, then synthesizing upward through components and containers to system context. The workflow coordinates four specialized agents (Code, Component, Container, Context) and outputs everything to a C4-Documentation directory. It's useful when you need to document an existing system's architecture or onboard new team members, though the workflow appears incomplete in the source. The approach follows the official C4 model but generates all four levels even though context and container diagrams are typically sufficient for most teams. Expect this to take time on large codebases since it processes every subdirectory individually.

skills.sh installs: 333
GitHub stars: 39.4K
last updated: Jun 3, 2026

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Install

$ npx -y skills add sickn33/antigravity-awesome-skills --skill c4-architecture-c4-architecture --agent claude-code

Installs into .claude/skills of the current project.

Files

C4 Architecture Documentation Workflow

Generate comprehensive C4 architecture documentation for an existing repository/codebase using a bottom-up analysis approach.

Use a bottom-up source inventory to support C4 views, while selecting only levels useful to the audience. Specialized agents are optional execution helpers, not bundled tools or evidence that source was reviewed.

Use this skill when

Working on c4 architecture documentation workflow tasks or workflows
Needing guidance, best practices, or checklists for c4 architecture documentation workflow