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Claude Code Mermaid plugins and skills

Flowy lists 189 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.

gstack
Plugin

gstack

"I don't think I've typed like a line of code probably since December, basically, which is an extremely large change." — Andrej Karpathy, No Priors podcast, March 2026 When I heard Karpathy say this, I wanted to find out how.

4 skills
@garrytan@garrytanView Plugin
learn-claude-code
Plugin

learn-claude-code

Bash is all you need - A nano claude code–like 「agent harness」, built from 0 to 1

4 skills
@shareai-lab@shareai-labView Plugin
openmontage
Plugin

openmontage

World's first open-source, agentic video production system. 12 production pipelines, 100+ tools, 700+ agent skill and production-knowledge files. Turn your AI coding assistant into a full video production studio.

49 skills
@calesthio@calesthioView Plugin
cli-anything
Plugin

cli-anything

"CLI-Anything: Making ALL Software Agent-Native", CLI-Hub: https://clianything.cc/

71 skills
@hkuds@hkudsView Plugin
slidev
Plugin

slidev

Presentation Slides for Developers

1 skill
@slidevjs@slidevjsView Plugin
k-dense-ai-scientific-agent-skills
Plugin

k-dense-ai-scientific-…

🔔 Claude Scientific Skills is now Scientific Agent Skills. Same skills, broader compatibility — now works with any AI agent that supports the open Agent Skills standard, not just Claude.

166 skills
@k-dense-ai@k-dense-aiView Plugin
k-dense-ai-scientific-agent-skills-2
Plugin

k-dense-ai-scientific-…

🔔 Claude Scientific Skills is now Scientific Agent Skills. Same skills, broader compatibility — now works with any AI agent that supports the open Agent Skills standard, not just Claude.

166 skills
@k-dense-ai@k-dense-aiView Plugin
diagram-design
Plugin

diagram-design

Editorial diagrams your designer won't hate. Editorial diagram types for Claude Code, Codex, Factory Droid, Pi, and Agent Skills-compatible hosts. Self-contained HTML + SVG. No shadows. No Mermaid slop.

1 skill
@cathrynlavery@cathrynlaveryView Plugin
claude-howto
Plugin

claude-howto

Go from typing claude to orchestrating agents, hooks, skills, and MCP servers — with visual tutorials, copy-paste templates, and a guided learning path. Get Started in 15 Minutes | Find Your Level | Browse the Feature Catalog

2 skills
@luongnv89@luongnv89View Plugin
aionui
Plugin

aionui

Open-source 24/7 Cowork app for OpenClaw, Hermes, Claude Code, Codex, OpenCode and 20+ more CLI Agent | Customize your assistants | Team them up|Star if you like it!

4 skills
@iofficeai@iofficeaiView Plugin
officecli
Plugin

officecli

OfficeCLI is the world's first and the best Office suite designed for AI agents. Give any AI agent full control over Word, Excel, and PowerPoint — in one line of code. Open-source. Single binary. No Office installation. No dependencies. Works everywhere.

11 skills
@iofficeai@iofficeaiView Plugin
mastra
Plugin

mastra

Mastra is a framework for building AI-powered applications and agents with a modern TypeScript stack. It includes everything you need to go from early prototypes to production-ready applications.

32 skills
@mastra-ai@mastra-aiView Plugin
beads
Plugin

beads

Distributed graph issue tracker for AI agents, powered by Dolt. Platforms: macOS, Linux, Windows, FreeBSD Docs: Beads provides a persistent, structured memory for coding agents.

2 skills
@gastownhall@gastownhallView Plugin
vibe-coding-cn
Plugin

vibe-coding-cn

一个通过与 AI 结对编程,将想法变为现实的终极工作站 本仓库的 AI 解读链接:zread.ai/tukuaiai/vibe-coding-cn

14 skills
@2025emma@2025emmaView Plugin
lifeos
Plugin

lifeos

⛰️ LifeOS — The universal AI Harness designed to move you from Current to Ideal state in both life and work.

56 skills
@danielmiessler@danielmiesslerView Plugin
aris
Plugin

aris

· · · · · · · · 💬 Join Community · 🌱 ARIS is a methodology, not a platform. What matters is the research workflow — take it wherever you go.

83 skills
@wanshuiyin@wanshuiyinView Plugin
claude-obsidian
Auto-invokedPlugin

claude-obsidian

Self-organizing AI second brain for Obsidian + Claude Code. Drop any source and Claude reads, links, and files it into one connected knowledge graph of plain Markdown you own. AI note-taking, personal knowledge management (PKM), and an open-source Notion alternative. Based on Karpathy's LLM Wiki pattern.

15 skills
@agricidaniel@agricidanielView Plugin
insforge
Plugin

insforge

The all-in-one, open-source backend platform for agentic coding. InsForge gives your coding agent database, auth, storage, compute, hosting, and AI gateway to ship full-stack apps end-to-end.

8 skills
@insforge@insforgeView Plugin
kami
Plugin

kami

Designs documents, PDFs, slide decks, and landing pages with CJK typography from Markdown and Mermaid. Activates when generating presentation or document layouts in a project.

1 skill
@tw93@tw93View Plugin
fireworks-tech-graph
Plugin

fireworks-tech-graph

Stop drawing diagrams by hand. Describe your system in English or Chinese — get geometry-safe SVG, PNG, focused SVG-to-GIF motion, and offline interactive technical diagrams.

1 skill
@yizhiyanhua-ai@yizhiyanhua-aiView Plugin
mcp-use
Plugin

mcp-use

The fullstack MCP framework to develop MCP Apps for ChatGPT / Claude & MCP Servers for AI Agents.

4 skills
@mcp-use@mcp-useView Plugin
visual-explainer-marketplace
Plugin

visual-explainer-marke…

An agent skill that turns complex terminal output into styled HTML pages you actually want to read. Ask your agent to explain a system architecture, review a diff, or compare requirements against a plan.

@nicobailon@nicobailonView Plugin
drawio-skill
Plugin

drawio-skill

A skill that turns natural language and real system sources into maintainable .drawio architecture models.

1 skill
@agents365-ai@agents365-aiView Plugin
trailofbits-skills
Plugin

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.

83 skills
@trailofbits@trailofbitsView Plugin
webnovel-writer
Auto-invokedPlugin

webnovel-writer

一个跑在 Claude Code 上的长篇网文创作插件。从初始化设定、规划卷纲,到写章、审查、沉淀记忆、查询状态,再到一个只读的可视化面板——整条创作流程都给你串好了。 它想解决的其实就一件事:让 AI 写到几百章,依然记得住设定、接得住伏笔、守得住大纲。 一句话定位:这是一套面向长篇连载的一致性系统,不是写完就忘的一次性生成器。 版本导览(2026-09-21 更新) 原 v7 设计公示(Discussions #118)所征集的反馈仍是 v8 设计的重要输入;v7 的 CLI 形态经评估后不再发布,下一代改以

8 skills
@lingfengqaq@lingfengqaqView Plugin
oh-story
Plugin

oh-story

Claude Code / Codex / OpenCode agent skills for writing Chinese web novels (网文): 扫榜、拆文、写作、去AI味、封面全流程,长篇短篇都支持 | 13 skills for novel writing and long-form fiction with file-based continuity tracking. MIT.

13 skills
@worldwonderer@worldwondererView Plugin
autoresearch
Plugin

autoresearch

Turn Claude Code, OpenCode, or OpenAI Codex into a relentless improvement engine. Based on Karpathy's autoresearch — constraint + mechanical metric + autonomous iteration = compounding gains.

1 skill
@uditgoenka@uditgoenkaView Plugin
drawio-mcp
Plugin

drawio-mcp

The official draw.io MCP (Model Context Protocol) server that enables LLMs to create and open diagrams in the draw.io editor.

1 skill
@jgraph@jgraphView Plugin
cc-wf-studio
Plugin

cc-wf-studio

You think visually. AI thinks in .md. CC Workflow Studio speaks both. Design workflows on a canvas. Export as Markdown your AI agent already understands. No more prompt-guessing. Why CC Workflow Studio? - Speaker Deck Link

10 skills
@breaking-brake@breaking-brakeView Plugin
zerolang
Plugin

zerolang

The programming language for agents. Zerolang is an experimental graph-native programming language where the semantic graph is the program database. Humans ask for outcomes. Agents query the graph, submit checked edits, and prove the result.

1 skill
@vercel-labs-2@vercel-labs-2View Plugin
cc-sdd
Plugin

cc-sdd

Package README: English | 日本語 | 繁體中文

17 skills
@gotalab@gotalabView Plugin
deepwiki-rs
Plugin

deepwiki-rs

Litho is an AI-powered documentation generation engine that automatically analyzes your source code and generates comprehensive, professional architecture documentation in the C4 model format.

5 skills
@sopaco@sopacoView Plugin
super-agent-party
Plugin

super-agent-party

⭐ All-in-one AI companion! Super Agent Party = Self hosted neuro sama + openclaw! ⭐ 全能AI伴侣!超级智能体派对 = 自托管neuro sama + openclaw!

4 skills
@heshengtao@heshengtaoView Plugin
yao-meta-skill
Plugin

yao-meta-skill

YAO stands for Yielding AI Outcomes: the goal is not to generate more prompt text, but to produce reusable AI assets and real operational outcomes. yao-meta-skill creates, evaluates, packages, and governs reusable agent skills.

1 skill
@yaojingang@yaojingangView Plugin
korean-law
Plugin

korean-law

법제처 42개 API를 10개 도구로. 법령, 판례, 행정규칙, 자치법규, 조약, 해석례(국세청 포함) + LLM 환각 방지 인용 검증(법령·판례, 실존+내용) + 조문 영향 그래프 + 시점 비교 자동 diff + 이럴 땐 이렇게 — 5단계 안내 + 판례 생사 확인(Citator) + 행위시법 판단 + 조례 정비 레이더 + 폐지 법령 후속 규정 안내를 AI 어시스턴트나 터미널에서 바로 사용.

@chrisryugj@chrisryugjView Plugin
oh-my-mermaid
Plugin

oh-my-mermaid

Turn complex codebases into clear, navigable architecture diagrams with Claude Code.

3 skills
@oh-my-mermaid@oh-my-mermaidView Plugin
muxy
Plugin

muxy

Lightweight and Memory efficient terminal for Mac built with SwiftUI and libghostty

2 skills
@muxy-app@muxy-appView Plugin
drama-skills
Plugin

drama-skills

开源 AI 短剧/漫剧创作 skill 合集:剧本、角色资产、分镜 storyboard、图片/视频提示词、审查,适配 Claude Code 与 Codex | Open-source AI short drama / micro-drama skills for Claude Code & Codex: script, assets, storyboard, image & video prompts, review. MIT.

12 skills
@worldwonderer@worldwondererView Plugin
delegate-skills
Plugin

delegate-skills

Create your fleet of lanes. One orchestrator, the right implementer for every job.

18 skills
@amelnagdy@amelnagdyView Plugin
skybridge
Plugin

skybridge

The full-stack React framework for MCP Apps and MCP Servers. Documentation · Quickstart · Examples

3 skills
@alpic-ai@alpic-aiView Plugin
prompt-improver
Plugin

prompt-improver

Intelligent prompt optimization for Claude Code. It injects the right context at the right moment - at prompt submit, tool use, and subagent start - so Claude has what it needs before it acts.

1 skill
@severity1@severity1View Plugin
design-dna
Plugin

design-dna

Turn reference UIs (images, screenshots, URLs) into quantified Design DNA JSON—tokens, qualitative style, visual effects—then generate matching UI from your content.

1 skill
@zanwei@zanweiView Plugin
sprite-gen
Plugin

sprite-gen

Generate clean 2D game sprites & animation atlases — component-row pipeline: state rows, alpha cleanup, frame extraction, runtime atlases. Codex/Claude skill.

1 skill
@aldegad@aldegadView Plugin
ai-daily-digest
Plugin

ai-daily-digest

skill 制作详情可查看 ➡️ 从 Andrej Karpathy 推荐的 90 个 Hacker News 顶级技术博客中抓取最新文章,通过 AI 多维评分筛选,生成一份结构化的每日精选日报。默认使用 Gemini,并支持自动降级到 OpenAI 兼容 API。 信息源来自 Hacker News Popularity Contest 2025,涵盖 simonwillison.net、paulgraham.com、overreacted.io、gwern.net、krebsonsecurity.com 等。

1 skill
@vigorx777@vigorx777View Plugin
brooks-lint
Auto-invokedPlugin

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
@hyhmrright@hyhmrrightView Plugin
feishu-cli
Plugin

feishu-cli

feishu-cli 是一个功能完整的飞书开放平台命令行工具。它将飞书文档、知识库、电子表格、消息、日历、任务等操作封装为简洁的命令行接口,核心能力是 Markdown ↔ 飞书文档双向无损转换。

9 skills
@riba2534@riba2534View Plugin
opentag
Plugin

opentag

Your persistent AI teammate in Slack, running on a computer you control. OpenTag gives an engineering channel a teammate that remains reachable through your self-hosted Control Plane, even when its paired computer is offline.

1 skill
@amplifthq@amplifthqView Plugin
repobrain
Plugin

repobrain

🧠 RepoBrain (formerly Antigravity) — Give your repo a brain. ChatGPT for your codebase: works in Claude Code, Cursor, Codex, Windsurf & more.

4 skills
@study8677@study8677View Plugin

FAQ

What are the best Claude Code Mermaid plugins?
Flowy lists 189 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