C4 Architecture — Agent Skill by Microsoft

From the author

Model and document existing or planned software architectures with the C4 model across System Context, Container, and Component levels plus deployment diagrams, then emit diagrams through a selected renderer. Use when an architect needs audience-appropriate software architecture documentation; use the 'architecture-diagrams' skill for infrastructure topology.

— the description by Microsoft

Install

Get the skill from its source (we cannot redistribute it):
https://github.com/microsoft/hve-core/tree/f425e943bf228052a23e6bc4810b5faef030314f/.github/skills/hve-core/c4-architecture

Documentation by Microsoft

The licence of this skill does not allow us to copy its documentation. Read it at the source

Files

SKILL.md(opens on GitHub)Not mirrored: opens on GitHub6.7 KiB
references/c4-modelling-instructions.md(opens on GitHub)Not mirrored: opens on GitHub7.2 KiB
references/renderer-mermaid.md(opens on GitHub)Not mirrored: opens on GitHub29.9 KiB

Requirements and compatibility

Written for: GitHub Copilot, Claude Code

Works with: Claude Code, Claude apps, OpenAI Codex, GitHub Copilot, Cursor, Gemini CLI, Kiro, OpenCode, Goose, Amp, Roo Code, JetBrains Junie, Factory Droid, Devin (ex-Windsurf), Mistral Vibe, OpenHands, Letta

“Works with” means the tool reads the open Agent Skills format; a skill written for one tool may use features others lack.

Needs: Claude Code frontmatter

The author says: Generates Mermaid source in any chat context. Preview needs a Mermaid-capable Markdown host. CLI render validation needs Node.js, @mermaid-js/mermaid-cli (mmdc) on PATH plus a Chrome/Chromium runtime; install may need package-manager and network access.

Security

No issues found by our static scan· No issues found

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