ClamAV Virus Scanner MCP server

This MCP server allows you to scan files for viruses by integrating with the ClamAV antivirus engine. The server processes scan requests and returns results through a simple Server-Sent Events (SSE) connection.

Prerequisites

Before running the ClamAV MCP server, you need to install ClamAV on your system.

Ubuntu/Debian

sudo apt-get update
sudo apt-get install clamav clamav-daemon

Windows

1. Download the ClamAV installer from ClamAV's official website
2. Run the installer and follow the setup wizard
3. Make sure to add ClamAV to your system PATH

macOS

brew install clamav

Running the Server

To start the MCP server, use the following command:

uv run mcp run main.py -t sse

By default, the server will listen for SSE connections on port 8000.

Connecting to Cursor

To use this MCP server with Cursor, add the following configuration to your Cursor settings:

{
  "mcpServers": {
    "ClamAV Server": {
      "url": "http://[SERVER_IP]:8000/sse"
    }
  }
}

Replace [SERVER_IP] with the IP address of the machine running the ClamAV MCP server.

API Reference

The MCP server provides a single endpoint for file scanning.

scan_file

This endpoint allows you to scan files for viruses.

Parameters:

• base64_data: Base64 encoded string of the file to scan
• filename: Name of the file to use in the scan

Returns:

• success: Boolean indicating if the scan was successful
• result: Raw output from clamscan command
• error: Error message if the scan failed

How to install this MCP server

For Claude Code

To add this MCP server to Claude Code, run this command in your terminal:

claude mcp add-json "ClamAV-Server" '{"url":"http://[SERVER_IP]:8000/sse"}'

See the official Claude Code MCP documentation for more details.

For Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > Tools & Integrations and click "New MCP Server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "ClamAV Server": {
            "url": "http://[SERVER_IP]:8000/sse"
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explicitly ask the agent to use the tool by mentioning the tool name and describing what the function does.

For Claude Desktop

To add this MCP server to Claude Desktop:

1. Find your configuration file:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json
• Linux: ~/.config/Claude/claude_desktop_config.json

2. Add this to your configuration file:

{
    "mcpServers": {
        "ClamAV Server": {
            "url": "http://[SERVER_IP]:8000/sse"
        }
    }
}

3. Restart Claude Desktop for the changes to take effect