Arc42 — Documentation skill for Claude Code
Generate or update arc42 architecture documentation with C4 diagrams for the current project.
How to install Arc42
Installs to ~/.claude/skills/marvinrichter-clarc-arc42/SKILL.md
mkdir -p ~/.claude/skills/marvinrichter-clarc-arc42 && curl -fsSL https://raw.githubusercontent.com/marvinrichter/clarc/HEAD/commands/arc42.md -o ~/.claude/skills/marvinrichter-clarc-arc42/SKILL.md Restart Claude Code, or start a new session, for it to be picked up.
What Arc42 does
description: Generate or update arc42 architecture documentation with C4 diagrams for the current project. Reads the codebase and produces docs/architecture/arc42.md with PlantUML diagrams. Supports targeted section updates.
arc42
Generate and maintain arc42 architecture documentation with C4 diagrams.
Instructions
1. Parse Arguments
`$ARGUMENTS` controls which sections to generate:
- (empty) or
all→ all 12 sections section-N(e.g.section-3,section-5) → only t
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Full documentation available on GitHub
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