smart-mcp-proxy/mcpproxy-go v0.23.1 on GitHub

This release focuses on improved connection management and security hardening, with fixes for Windows compatibility and the Teams edition web UI.

New Features

On-demand reconnection: Added reconnect_on_use configuration option that automatically reconnects to upstream MCP servers when tools are invoked, enabling more efficient resource usage for intermittently-used servers

Bug Fixes

Teams: Fixed Web UI launcher in system tray to use the configured port instead of defaulting to a hardcoded value (#362)
Windows compatibility: Resolved connection test failures on Windows related to path prefix handling and file permission checks
Added missing GetToolApprovalStatus method to test mocks and storage imports, fixing potential runtime errors

Security & Reliability

Enhanced quarantine state machine with formal invariant checking and property-based tests to ensure security guarantees are maintained across all state transitions
Fixed a security issue in the quarantine system discovered through property testing

Configuration Note: The new reconnect_on_use option is useful for MCP servers that are expensive to keep running continuously. When enabled, MCPProxy will establish connections only when tools are actually needed, then optionally disconnect afterward to save resources.

Download Installers

Platform	Download	Notes
macOS (Apple Silicon)	Download DMG	Signed & Notarized - Recommended for M1/M2/M3/M4
macOS (Intel)	Download DMG	Signed & Notarized
Windows (64-bit)	Download Setup	Setup wizard
Windows (ARM64)	Download Setup	For ARM Windows devices
Linux (AMD64)	Download tar.gz	Binary package
Linux (ARM64)	Download tar.gz	For ARM Linux

Homebrew (macOS/Linux):

brew install smart-mcp-proxy/mcpproxy/mcpproxy

Other download options (auto-update URLs, archives)

Auto-update URLs (always points to latest):

Binary archives (this version):

Installation Instructions

Windows

Download the installer for your architecture
Run mcpproxy-setup-*.exe
Follow the installation wizard (requires Administrator privileges)
Launch "MCPProxy" from Start Menu

macOS

Download the signed DMG for your Mac
Double-click the DMG to mount it
Double-click the PKG installer inside
Follow the installation wizard
Launch mcpproxy.app from Applications folder

Linux / Manual Installation

Download the appropriate archive
Extract: tar -xzf mcpproxy-*.tar.gz
Make executable: chmod +x mcpproxy
Run: ./mcpproxy serve

Platform Support & Usage

Platform Support

macOS: Full system tray support with menu and icons
Windows: Full system tray support with menu and icons
Linux: Headless mode only (CLI)

Usage

GUI (Recommended):

Launch mcpproxy.app from Applications (auto-starts core server)
Manages server via system tray menu

CLI:

mcpproxy serve                           # Start server
mcpproxy serve --listen 127.0.0.1:8081  # Custom port
export MCPPROXY_API_KEY=your-secret-key  # Set API key