PowerShell.MCP v1.4.1 - Syntax Highlighting & Stability Improvements

[yotsuda]

PowerShell.MCP v1.4.1 - Syntax Highlighting & Startup Banner

This release improves syntax highlighting accuracy, prevents conflicts from multiple server instances, and adds customizable startup banners.

🎉 What's New

Startup Banner

The start_powershell_console tool now accepts an optional banner parameter to display a customizable message when the PowerShell console launches. AI assistants can use this to add personality with greetings, jokes, or fun facts!

Single Instance Enforcement

PowerShell.MCP now detects if another server is already running and fails module import with a clear error message. This prevents confusion from orphaned sessions or duplicate servers.

Detection uses a connection test to the named pipe/socket, which works reliably on all platforms.

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📊 What's Changed Since v1.4.0

New Features

• Startup banner: start_powershell_console now supports a banner parameter for custom startup messages (displayed in green)

Improvements

• Comment token coloring: Comments are now properly colored (DarkGreen by default)
• PSReadLine color matching: Default colors updated to match PSReadLine defaults
  • Keyword: Yellow → Green
  • Member: White → Gray
  • Default: White → Gray

Internal

• Build script now supports -Target parameter for selective builds (Dll, WinX64, LinuxX64, OsxX64, OsxArm64)

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📄 Installation & Upgrade

Windows

# New installation
Install-Module PowerShell.MCP -Force

# Upgrade existing
Update-Module PowerShell.MCP

Linux / macOS

# Install
pwsh -Command "Install-Module PowerShell.MCP -Scope CurrentUser -Force"

# Set execute permission
chmod +x $(pwsh -Command "Import-Module PowerShell.MCP; Get-MCPProxyPath")

Update MCP Configuration

1. Get new proxy path:

# Windows (escaped for JSON)
Get-MCPProxyPath -Escape

# Linux / macOS
Get-MCPProxyPath

2. Update claude_desktop_config.json with the path from step 1:

{
  "mcpServers": {
    "PowerShell": {
      "command": "C:\\Users\\YourName\\Documents\\PowerShell\\Modules\\PowerShell.MCP\\1.4.1\\bin\\win-x64\\PowerShell.MCP.Proxy.exe"
    }
  }
}

3. Restart Claude Desktop (or Claude Code)

📖 Full Guide: https://github.com/yotsuda/PowerShell.MCP#quick-start

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Full Documentation: https://github.com/yotsuda/PowerShell.MCP

Questions? GitHub Discussions | Report Issues: GitHub Issues

⚠ Security Notice: Provides complete PowerShell access. Use in trusted environments only.

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This discussion was created from the release PowerShell.MCP v1.4.1 - Syntax Highlighting & Stability Improvements.