Pieces MCP Net

A C# implementation of MCP (Model context protocol) using Pieces Long-Term Memory powered by the Pieces C# SDK.

This contains an MCP tool that answers questions using the Pieces Long-Term Memory for the past 7 days. This limit is hard coded, but this code can be expanded to make this configurable.

Setup

This requires:

• .NET 9 SDK installed
• Pieces installed, and the LTM engine enabled

Build the code

It is easiest to build and publish a single binary that you can then call from your MCP server. This project is configured for a self-contained single file output.

To build and publish, use this command:

dotnet publish -r

Replace `` with the RID of your platform of choice.

This will create a single executable in the Release/net9.0//publish/ folder called PiecesMCPNet

Register with Claude for Desktop

To register this with Claude for Desktop, add the following to [your claude_desktop_config.json file](https://modelcontextprotocol.io/quickstart/user#2-add-the-filesystem-mcp-server):

{
  "mcpServers": {
    "PiecesLTM": {
      "command": "PiecesMCPNet"
    }
  }
}

Replace `` with the path to this file.

You can now re-launch Claude for Desktop, and this tool will be registered.

To invoke it, prompt with:

Ask Pieces LTM

You will need to allow Pieces for the chat or single message in Claude for Desktop.