Architecture diagrams answer the questions that come up most often during incidents and design reviews: what talks to what, who owns what, where does the data live, what fails when X goes down. A good HTML system diagram is the document you open during the incident, not the one you write after.
HTML Architecture Diagrams is a community-contributed Claude Code skill in the frontend sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/html-architecture-diagrams/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use whenever the user wants to visualize, document, or explain how a system fits together — across services, regions, queues, caches, databases, or organizational boundaries. Reach for this whenever the explanation would otherwise involve sentences like "service A talks to service B which writes to queue C".
The HTML Architecture Diagrams Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 69,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
mkdir -p ~/.claude/skills/html-architecture-diagrams curl -L https://claudskills.com/skills/html-architecture-diagrams/SKILL.md \ -o ~/.claude/skills/html-architecture-diagrams/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/html-architecture-diagrams/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/html-architecture-diagrams/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\html-architecture-diagrams\SKILL.md on Windows. See the full install guide for step-by-step instructions.
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
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SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.