mcp-server-matrix

A Model Context Protocol (MCP) server for Matrix — the open, decentralized communication protocol.

Built on matrix-nio, this server lets any MCP-compatible AI assistant (Claude, OpenClaw, etc.) send and read messages, manage rooms, and interact with any Matrix homeserver (Synapse, Dendrite, Conduit).

Features

Installation

pip install mcp-server-matrix

Or with uv:

uvx mcp-server-matrix

Configuration

Set environment variables:

* Provide either MATRIX_PASSWORD or MATRIX_ACCESS_TOKEN.

Usage

Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "matrix": {
      "command": "mcp-server-matrix",
      "env": {
        "MATRIX_HOMESERVER": "https://matrix.example.com",
        "MATRIX_USER": "@bot:example.com",
        "MATRIX_PASSWORD": "your-password"
      }
    }
  }
}

Claude Code

{
  "mcpServers": {
    "matrix": {
      "command": "mcp-server-matrix",
      "env": {
        "MATRIX_HOMESERVER": "https://matrix.example.com",
        "MATRIX_USER": "@bot:example.com",
        "MATRIX_ACCESS_TOKEN": "syt_..."
      }
    }
  }
}

OpenClaw

Add to openclaw.json:

{
  "mcp": {
    "servers": {
      "matrix": {
        "command": "mcp-server-matrix",
        "env": {
          "MATRIX_HOMESERVER": "https://matrix.example.com",
          "MATRIX_USER": "@bot:example.com",
          "MATRIX_PASSWORD": "your-password"
        }
      }
    }
  }
}

Direct (stdio)

export MATRIX_HOMESERVER=https://matrix.example.com
export MATRIX_USER=@bot:example.com
export MATRIX_PASSWORD=your-password

mcp-server-matrix

Examples

Once connected, your AI assistant can:

• Read messages: "What are the latest messages in #general?"
• Send messages: "Send 'Hello everyone!' to #announcements"
• Manage rooms: "Create a room called 'Project X' and invite @alice:matrix.org"
• Get info: "How many members are in #team-chat?"

Supported Homeservers

Tested with:

• Synapse (reference implementation)
• Should work with any spec-compliant homeserver (Dendrite, Conduit, etc.)

Requirements

• Python 3.10+
• A Matrix account on any homeserver
• Network access to the homeserver

License

MIT

Links

• Model Context Protocol
• matrix-nio
• Matrix Spec