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html-diagram

100 / 100 · Low risk

Fine to try.

By plannotator/effective-html (GitHub) · coding · 4,089 stars · scanned at commit 5ce160a

Direct-invocation specialist for self-contained HTML diagrams whose layout, notation, and interaction clarify relationships, sequence, topology, state, hierarchy, or quantitative structure. Use when the user explicitly invokes html-diagram or the broad html skill routes a diagram request here. Do not activate independently from a general request.

Works with any agent that supports SKILL.md skills.

What this skill can do

We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'html-diagram' ] || [ -L ~/.agents/skills/'html-diagram' ]; then echo 'A skill folder named html-diagram already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/plannotator/effective-html' "$d" && git -C "$d" checkout --quiet '5ce160a3e76dc1c0f9301f8a1903704ec607636a' -- 'skills/html-diagram' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/html-diagram' ~/.agents/skills/'html-diagram' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'html-diagram' ~/.claude/skills/'html-diagram' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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