siyuan

Name: siyuan
Author: siyuan-note

Verified

A privacy-first, self-hosted, fully open source personal knowledge management software, written in typescript and golang.

44,458stars

2,840forks

TypeScript

Installation

# Add to your Claude Code skills
git clone https://github.com/siyuan-note/siyuan

Getting Started

Guides for using ai agents skills like siyuan.

Caveman: Cut Claude Token Use by 65%
How agent-side prompt compression works, when to use it, and when not to.
What is an AI Skills Marketplace?
Definitions, how marketplaces work, and how to choose between them in 2026.
Getting Started with AI Skills

Security ReportVerified

Last scanned: 6/9/2026

{
  "issues": [],
  "status": "PASSED",
  "scannedAt": "2026-06-09T07:48:31.188Z",
  "npmAuditRan": true,
  "pipAuditRan": true
}

README.md

Frequently Asked Questions

What is siyuan?

siyuan is an open-source ai agents skill for AI coding assistants such as Claude Code, Codex CLI, and ChatGPT, built by siyuan-note. A privacy-first, self-hosted, fully open source personal knowledge management software, written in typescript and golang. It has 44,458 GitHub stars.

Is siyuan safe to use?

Yes. siyuan passed SkillsLLM's automated security scan — a dependency vulnerability audit plus prompt-injection heuristics — with no high-severity issues. You can read the full report in the Security Report section on this page.

How do I install siyuan?

Clone the repository with "git clone https://github.com/siyuan-note/siyuan" and add it to your Claude Code skills directory (see the Installation section above).

What programming language is siyuan written in?

siyuan is primarily written in TypeScript. It is open-source under siyuan-note on GitHub, so you can review or fork the full source.

Are there alternatives to siyuan?

Yes. SkillsLLM lists many other AI Agents skills you can browse and compare side by side. Open the AI Agents category from the badge at the top of this page, or use the Related Skills and comparison links further down to weigh siyuan against similar tools.

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💡 Introduction
🔮 Features
🏗️ Architecture and Ecosystem
🌟 Star History
🗺️ Roadmap
🚀 Download Setup
🏘️ Community
🛠️ Development Guide
❓ FAQ
🙏 Acknowledgement
- Contributors

💡 Introduction

SiYuan is a privacy-first personal knowledge management system, support fine-grained block-level reference and Markdown WYSIWYG.

Welcome to SiYuan English Discussion Forum to learn more.

🔮 Features

Most features are free, even for commercial use.

Content block
- Block-level reference and two-way links
- Custom attributes
- SQL query embed
- Protocol siyuan://
Editor
- Block-style
- Markdown WYSIWYG
- List outline
- Block zoom-in
- Million-word large document editing
- Mathematical formulas, charts, flowcharts, Gantt charts, timing charts, staffs, etc.
- Web clipping
- PDF Annotation link
Export
- Block ref and embed
- Standard Markdown with assets
- PDF, Word and HTML
- Copy to WeChat MP, Zhihu and Yuque
Database
- Table view
Flashcard spaced repetition
AI writing and Q/A chat via OpenAI API
Tesseract OCR
Multi-tab, drag and drop to split screen
Template snippet
JavaScript/CSS snippet
Android/iOS/HarmonyOS App
Docker deployment
API
Community marketplace

Some features are only available to paid members, for more details please refer to Pricing.

🏗️ Architecture and Ecosystem

SiYuan Arch

Project	Description	Forks	Stars
lute	Editor engine
chrome	Chrome/Edge extension
bazaar	Community marketplace
dejavu	Data repo
petal	Plugin API
android	Android App
ios	iOS App
harmony	HarmonyOS App
riff	Spaced repetition

🌟 Star History

🗺️ Roadmap

🚀 Download Setup

It is recommended to give priority to installing through the application market on the desktop and mobile, so that you can upgrade the version with one click in the future.

App Market

Mobile:

Desktop:

Microsoft Store

siyuan

Frequently Asked Questions

What is siyuan?

Is siyuan safe to use?

How do I install siyuan?

What programming language is siyuan written in?

Are there alternatives to siyuan?

Related Skills

Table of Contents

💡 Introduction

🔮 Features

🏗️ Architecture and Ecosystem

🌟 Star History

🗺️ Roadmap

🚀 Download Setup

App Market

Installation Package