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mermaid-validate

95 / 100 · Low risk

Fine to try.

By fprochazka/claude-code-plugins (GitHub) · other · 14 stars · scanned at commit f8750c7

Render one `.mmd` file with `mmdc`, look at the PNG, and report whether the diagram is correct and clear. Loaded by the validator subagent that `diagrams:mermaid` spawns, when its prompt names this skill. The author of the diagram fixes the source; this skill never edits it.

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

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

if [ -e ~/.agents/skills/'mermaid-validate' ] || [ -L ~/.agents/skills/'mermaid-validate' ]; then echo 'A skill folder named mermaid-validate already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/fprochazka/claude-code-plugins' "$d" && git -C "$d" checkout --quiet 'f8750c74a054b9b10b10838dc052cf0d898671b4' -- 'plugins/diagrams/skills/mermaid-validate' && mkdir -p ~/.agents/skills && cp -R "$d"/'plugins/diagrams/skills/mermaid-validate' ~/.agents/skills/'mermaid-validate' && 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/'mermaid-validate' ~/.claude/skills/'mermaid-validate' (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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