What are the best Claude Code Mermaid plugins?

Flowy lists 5 plugins for Mermaid, ranked by fit and signal rather than raw install count. Open any listing to read every skill in full before you install it.

Do these Mermaid skills run automatically?

The Auto-invoked ones do. They ship a FLOW.md router and a hook, so Claude Code loads the matching skill as you prompt. Indexed listings install normally and you invoke them yourself.

How does Flowy decide a plugin is a Mermaid plugin?

The tag is derived from the plugin's own content, its skill names, descriptions, README and file types, not from a tag someone typed. A plugin appears here only when its real content matches.

Are these Mermaid plugins free?

Yes. Flowy is free and open source with nothing gated. You can read every skill before installing, and each listing links to its upstream repository and its creator.

Claude Code Mermaid plugins and skills

Flowy lists 5 plugins for Mermaid work in Claude Code. Each one bundles skills a Claude Code agent can load while you work. Every listing shows what is inside before you install, who built it, and whether it is Auto-invoked, meaning a FLOW.md router fires the right skill as you prompt instead of leaving them dormant.

data

scientific-agent-skills

Turn any AI agent into an AI Scientist. The #1 Agent Skills library for science, used by 160,000+ scientists worldwide. 148 ready-to-use skills plus 100+ scientific databases covering biology, chemistry, medicine, and drug discovery. Compatible with Cursor, Claude Code, Codex, Pi, Antigravity, and the open Agent Skills standard.

149 skills

@k-dense-aiView Plugin

security

trailofbits-skills

A Claude Code plugin marketplace from Trail of Bits providing skills to enhance AI-assisted security analysis, testing, and development workflows. Codex can load this marketplace through its Claude marketplace compatibility. Also see: claude-code-config · skills-curated · claude-code-devcontainer · dropkit

75 skills

@trailofbitsView Plugin

content

drawio-skill

English · 中文 · 📖 Online Docs A skill that turns natural-language descriptions into .drawio XML and exports them to PNG / SVG / PDF / JPG via the native draw.io desktop CLI. It can also turn an existing codebase (Python / JS-TS / Go / Rust), Terraform / Kubernetes / docker-compose infrastructure, or a SQL schema into an auto-laid-out diagram.

1 skills

@agents365-aiView Plugin

drawio-skill

Loading skills

1 skills

Open this plugin

testing

brooks-lint

AI code reviews grounded in 12 classic engineering books — decay risk diagnostics with book citations, severity labels, and 6 analysis modes including full-sweep auto-fix

9 skills

@hyhmrrightView Plugin

dev tooling

ai-agents-skills

🧠 AI Agent Skills Repository - A curated collection of specialized skills for AI coding agents (Claude Code, GitHub Copilot, Cursor, Windsurf). Created by Yuval Avidani using GitHub Copilot via VS Code Insiders.

39 skills

@hoodiniView Plugin

FAQ

What are the best Claude Code Mermaid plugins?: Flowy lists 5 plugins for Mermaid, ranked by fit and signal rather than raw install count. Open any listing to read every skill in full before you install it.
Do these Mermaid skills run automatically?: The Auto-invoked ones do. They ship a FLOW.md router and a hook, so Claude Code loads the matching skill as you prompt. Indexed listings install normally and you invoke them yourself.
How does Flowy decide a plugin is a Mermaid plugin?: The tag is derived from the plugin's own content, its skill names, descriptions, README and file types, not from a tag someone typed. A plugin appears here only when its real content matches.
Are these Mermaid plugins free?: Yes. Flowy is free and open source with nothing gated. You can read every skill before installing, and each listing links to its upstream repository and its creator.

Browse every plugin