CLAUDE PLUGIN

c4m

Publisher not specified · Claude Code

What this plugin does

Interactive C4 architecture diagrams (Simon Brown's model) for Claude Code. Five mode-driven
workflows — Design (greenfield), Document-code (retro-doc from a repo), Document-prose (from
README/ADR/spec), Review (critique an existing diagram), Update (evolve one) — accessed via
/c4m:auto, /c4m:design, /c4m:code, /c4m:prose, /c4m:review, /c4m:update. Output is one Markdown
document per C4 level with embedded Mermaid; format negotiable (Structurizr DSL, PlantUML) and
destination negotiable (filesystem or MCP — Notion, Linear, Drive). Enforces the editorial
invariants: technology mandatory on every Container/Component, intent-specific relationship labels,
protocol on inter-container links, assumptions kept explicit.

Source repository ↗ Publisher website ↗

Catalog observations

Sources: Community
Works with: Claude Code
Reported installs: Not provided
First observed: 2026-10-03 22:13 UTC
Last observed: 2026-10-07 12:00 UTC

Installation counts are reported by Claude Marketplace, not independently verified active users. Observation dates are not release dates. Pricing and account requirements must be checked with the publisher.

Install in Claude Code

Choose a source and review what the plugin adds before installing.

Community

/plugin marketplace add anthropics/claude-plugins-community
/plugin install c4m@claude-community

Claude Code installation documentation

Source evidence

Listing and manifest JSON

Descriptions and compatibility labels come from the linked sources. Where both sources match, the GitHub description is used because web summaries may be shortened. We have not independently tested the declared capabilities.