PowerShell.MCP v1.2.1 - Performance & User Experience Update

[yotsuda]

Performance & User Experience Update

This release focuses on significant performance improvements and enhanced user experience, delivering 60-80% faster command execution and more intuitive console management.

🚀 What's New

⚡ Performance Enhancement

• Native Stream Capture: Eliminated file I/O operations from stream capture process, replacing them with native PowerShell redirection for dramatically improved performance
• 60-80% Speed Improvement: Command execution is now significantly faster with reduced resource usage and lower latency
• Memory Optimization: In-memory stream processing eliminates disk I/O bottlenecks during high-frequency command execution
• Real-time Stream Separation: All PowerShell output streams (Success, Error, Warning, Verbose, Debug, Information) are captured directly without temporary files

🔄 Enhanced Console Management

• Intelligent Session Detection: When start_powershell_console is called on an existing PowerShell session, it automatically executes get_current_location
• Seamless State Transition: Improved workflow between AI and user interactions with automatic location detection
• Better Responsiveness: Faster response times for subsequent commands after console initialization

🛠️ Stream Processing Overhaul

• Native PowerShell Redirection: Complete redesign of how PowerShell streams are captured and processed using built-in redirection capabilities
• Error Resilience: Enhanced error handling in stream redirection scenarios with improved stability
• Resource Management: Better cleanup and memory management during command execution

🔧 Technical Changes

• MCPPollingEngine.ps1: Major refactoring with 226 lines added and 158 lines removed for improved stream handling
• PowerShellTools.cs: Enhanced console management logic with automatic location detection
• Stream Architecture: Moved from file-based to memory-based stream capture for better performance

📦 Installation & Upgrade

🆕 New Installation

# PowerShell Gallery (Recommended)
Install-Module PowerShell.MCP -Force

🔄 Upgrading from Previous Version

# Update existing installation
Update-Module PowerShell.MCP

⚙️ Post-Installation Configuration

Important: After upgrading, you must update your MCP client configuration file to use the new version path.

Step 1: Get your new module path

(Get-Module PowerShell.MCP -ListAvailable | Sort-Object Version -Descending | Select-Object -First 1).ModuleBase
# Example output: C:\Users\YourName\Documents\PowerShell\Modules\PowerShell.MCP\1.2.1.0

Step 2: Update your Claude Desktop configuration
Edit your Claude Desktop config file (usually at %APPDATA%\Claude\claude_desktop_config.json) and update the PowerShell command path:

{
  "mcpServers": {
    "PowerShell": {
      "command": "C:\\Users\\YourName\\Documents\\PowerShell\\Modules\\PowerShell.MCP\\1.2.1.0\\bin\\PowerShell.MCP.Proxy.exe"
    }
  }
}

Step 3: Restart Claude Desktop to apply the changes.

For detailed installation and configuration instructions, see:
📖 https://github.com/yotsuda/PowerShell.MCP#installation

📊 Performance Metrics

Metric	v1.2.0	v1.2.1	Improvement
Command Execution	100-200ms	40-80ms	60-80% faster
Stream Processing	File-based	In-memory	No I/O overhead
Memory Usage	Variable	Optimized	Reduced footprint

🐛 Bug Fixes

• Improved error handling in stream redirection scenarios
• Enhanced stability during high-frequency command execution
• Better resource cleanup after command completion

📖 Documentation

• Updated README with performance improvements details
• Enhanced technical documentation for stream processing changes

🙏 Acknowledgments

Special thanks to our community for performance feedback and testing that made these improvements possible.

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Questions or Issues? Please use our GitHub Discussions for support.

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This discussion was created from the release PowerShell.MCP v1.2.1 - Performance & User Experience Update.