A little MCP server for siyuan-note

中文

A plugin that provides MCP service for Siyuan Note.

Current Version: v0.2.0 (This version contains breaking changes)

Improvements:
Added support for Streamable HTTP connections (endpoint changes required)

Marked SSE connection as deprecated (will be removed in future versions) - Please reconfigure according to documentation

Different devices can now use separate config files - Note: Upgrading will reset existing configurations

New Feature:
Added access authorization code support

✨ 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]
  • Use keyword search;
  • Use SQL search;
• [Retrieve]
  • Fetch document kramdown by ID;
  • List notebooks;
• [Write]
  • Append content to diary;
  • Append content to a specific document by ID;

❓ 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