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MCP FTP/FTPS Resource Handler

The FTP/FTPS Resource Handler module provides FTP and FTPS resource support for the MCP Server, allowing remote files on FTP servers to be exposed as MCP resources.

Overview​

This module implements the IMcpResourceTypeHandler interface to handle ftp:// URIs. It uses the FluentFTP library to connect to FTP servers and retrieve file content.

Features​

  • FTP and FTPS Support: Connect to both standard FTP and secure FTPS servers
  • Credentials Protection: Passwords are encrypted using IDataProtector when stored
  • Export Safety: Passwords are automatically cleared during deployment export
  • MIME Type Detection: Automatic MIME type detection based on file extension

URI Pattern​

ftp://{itemId}/{path}
  • {itemId}: The unique identifier of the MCP resource
  • {path}: The path to the file on the FTP server

Configuration​

When creating an FTP resource in the admin UI, you can configure:

FieldDescription
HostThe FTP server hostname or IP address
PortThe FTP port (default: 21)
UsernameFTP authentication username
PasswordFTP authentication password (encrypted in storage)
Use SSLEnable FTPS (FTP over SSL/TLS)

Usage​

Creating an FTP Resource via Admin UI​

  1. Navigate to Artificial Intelligence → MCP Resources
  2. Click Add Resource
  3. Select FTP/FTPS as the resource type
  4. Fill in the connection details:
    • Display Text: A friendly name for the resource
    • URI: ftp://auto-generated-id/path/to/file.txt
    • Name: The MCP resource name
    • Host, Port, Username, Password, Use SSL
  5. Save the resource

Creating an FTP Resource via Recipe​

{
  "steps": [
    {
      "name": "McpResource",
      "Resources": [
        {
          "Source": "ftp",
          "DisplayText": "Remote Config File",
          "Resource": {
            "Uri": "ftp://resource-id/config/settings.json",
            "Name": "remote-config",
            "Description": "Configuration file from FTP server",
            "MimeType": "application/json"
          },
          "Properties": {
            "FtpConnectionMetadata": {
              "Host": "ftp.example.com",
              "Port": 21,
              "Username": "user",
              "Password": "",
              "UseSsl": false
            }
          }
        }
      ]
    }
  ]
}

Note: Passwords are not exported for security reasons. You must manually set the password after importing.

Dependencies​

This module requires:

  • CrestApps.OrchardCore.AI.Mcp (MCP Server module)
  • FluentFTP NuGet package

Security Considerations​

  • Password Encryption: Passwords are encrypted at rest using ASP.NET Core Data Protection
  • Export Safety: Passwords are automatically removed during deployment/recipe export
  • FTPS: Use FTPS (SSL/TLS) when possible for encrypted connections
  • Firewall: Ensure your server can reach the FTP host on the configured port

Extending​

To create a custom FTP resource handler, you can implement IMcpResourceHandler to handle additional events:

public class CustomFtpMcpResourceHandler : IMcpResourceHandler
{
    public void Exporting(ExportingMcpResourceContext context)
    {
        // Handle export customization
    }
}