A little MCP server for siyuan-note

中文

A plugin that provides MCP service for Siyuan Note.

⚠️ Breaking changes: Upgrading from v0.1.x to v0.2.x introduces breaking changes. CHANGELOG_zh-CN

✨ Quick Start

• Download from the marketplace or 1. unzip the package.zip in Release, 2. move the folder to workspace/data/plugins/, 3. and rename the folder to syplugin-anMCPServer;
• Enable the plugin;
• The plugin listens on port 16806 by default (Host: 127.0.0.1), please use http://127.0.0.1:16806/sse as the server access address;

⭐ If this is helpful to you, please consider giving it a star!

🔧 Supported Tools

• [Search]

  • Keyword search; Temporarily removed, please provide feedback if needed
  • SQL search;
  • Notebook index Q&A (using RAG backend service, feature in testing);

• [Retrieve]

  • Get document kramdown by ID;
  • List notebooks;
  • Get backlinks by ID;
  • Get child document IDs;
  • Read properties;
  • Read journal entries by date; Temporarily removed, please provide feedback if needed

• [Write]

  • Document type

    • Append content to journal;
    • Append content to a document by ID;
    • Create a new document at a specified location by ID;

  • Flashcard type

    • Create flashcards from Markdown content;
    • Create flashcards by block ID;
    • Delete flashcards by block ID;

  • Properties

    • Modify properties;

❓ FAQ

• Q: How to use it in an MCP client?
  Please refer to the later sections;

• Q: What are some common MCP clients?

  • Refer to: https://github.com/punkpeye/awesome-mcp-clients or https://modelcontextprotocol.io/clients;

• Q: Does the plugin support authentication?

  • Version v0.2.0 now supports authentication. After setting the authentication token in the plugin settings, the MCP client needs to configure the authorization request header with the value Bearer YourToken;

• Q: What is the connection count?

  • In SSE mode, this represents an active SSE connection. Due to clients not disconnecting properly or unknown software connections, the count may fluctuate;
  • In Streamable HTTP mode and the current plugin implementation, the connection count is always 0;

• Q: Can it be used in Docker?

  • No, the plugin relies on a Node.js environment and does not support running on mobile devices or Docker.

    To support SiYuan deployed in Docker, it is recommended to switch to other MCP projects. Some relevant projects may be listed here.

    Alternatively, decouple this plugin from the SiYuan frontend.

How to Configure in an MCP Client?

Different MCP clients require different configuration methods. Please refer to the MCP client documentation.

MCP clients are continuously updated, so the configuration or usage instructions here may not be directly applicable and are for reference only.

Here, we assume: the plugin’s port is 16806, and the authorization token is abcdefg.

Modify the MCP application’s configuration, select the Streamable HTTP type, and configure the endpoint.

Clients Supporting Streamable HTTP

The following configuration uses Cherry Studio as an example. Different MCP clients may require different configuration formats—please refer to the MCP client documentation.

Plugin Without Authorization Token

1. Type: Select Streamable HTTP (streamablehttp);
2. URL: http://127.0.0.1:16806/mcp;
3. Headers: Leave empty;

Plugin With Authorization Token

1. Type: Select Streamable HTTP (streamablehttp);
2. URL: http://127.0.0.1:16806/mcp;
3. Headers: Authorization=Bearer abcedfg;

Clients Supporting Only Stdio

If the MCP client does not support HTTP-based communication and only supports stdio, a conversion method is needed.

Here, we use node.js + mcp-remote@next.

1. Download Node.js: https://nodejs.org/en/download

2. Install mcp-remote@next:

npm install -g mcp-remote@next  

The following configuration uses 5ire as an example. Different MCP clients may require different configuration formats—please refer to the MCP client documentation.

Plugin Without Authorization Token

Command:

npx mcp-remote@next http://127.0.0.1:16806/mcp  

Plugin With Authorization Token

Command:

npx mcp-remote@next http://127.0.0.1:16806/mcp --header Authorization:${AUTH_HEADER}  

Environment Variable:

Name: AUTH_HEADER
Value: Bearer abcdefg

🙏 References & Acknowledgements

Some dependencies are listed in package.json.

Developer/Project	Project Description	Citation
thuanpham582002/tabby-mcp-server	Provides MCP service within the terminal software Tabby; MIT License	Implementation method of MCP service
wilsons / Frostime	System Prompt CC BY-SA 4.0	System Prompts etc. which locate at static/