MCP Mux, developed by Mcpmux, is a server tool designed to act as a local Model Context Protocol gateway and server manager. Built with Rust and utilizing Tauri 2, this platform-specific binary application simplifies interactions between AI clients and numerous MCP servers. It provides a central point of connection for AI clients like Cursor, Claude, and ChatGPT, enabling them to manage and access over 100 different MCP servers efficiently through a single local interface. This free tool orchestrates AI workflows.

What does MCP Mux connect to?

MCP Mux operates as a local gateway, connecting AI clients to a diverse ecosystem of Model Context Protocol servers. It functions as an MCP server manager, consolidating access to over 100 distinct MCP servers. This unified gateway allows various AI clients to interact with these servers through a single local entry point. The underlying MCP servers it manages can utilize stdio for communication, while MCP Mux itself listens for AI client connections on localhost:45818.

Core features and tools

MCP Mux exposes several callable tools directly to AI assistants for managing its capabilities. These include mcpmux_list_spaces, mcpmux_list_all_tools, and mcpmux_search_tools to aid in discovery and exploration of available resources. For composing and pinning specific toolsets, AI agents can utilize mcpmux_manage_feature_set and mcpmux_bind_current_workspace. This functionality empowers AI clients to dynamically adapt their capabilities based on their current operational context and requirements.

Who is it for?

MCP Mux is intended for AI developers and users of AI clients compatible with the Model Context Protocol, such as Cursor, Claude, VS Code, ChatGPT, Windsurf, JetBrains, and Gemini CLI. It addresses the need for centralized management and efficient connection to multiple MCP servers. This enables more efficient AI agent interaction and deployment. Skip this if you do not use AI clients that support the Model Context Protocol or manage multiple MCP servers.

How to get started

Access is granted through a standard OAuth authorization flow, supporting OAuth 2.1 + PKCE with automatic token refresh. The local gateway listens for AI client connections on localhost:45818.

Use cases

• Unified access to multiple MCP servers, allowing users to configure servers once and connect all AI clients through a single local gateway.
• Context-aware tool routing, where MCP Mux routes specific toolsets to AI agents based on the current workspace or folder.
• AI agent tool optimization, enabling AI assistants to discover available tools and compose focused FeatureSets directly from chat.

MCP Mux provides a local gateway for managing and connecting AI clients to numerous Model Context Protocol servers. Its secure authentication, automatic token refresh, and callable tools empower AI agents to discover and optimize their capabilities. The platform-native encryption for credentials ensures secure operation.