MCP server CX Codex

McpMux — Claude Code MCP server: features and setup

Q: How do I install McpMux for Claude Code?

Download the app from `https://mcpmux.com/download`, then add the gateway address `http://localhost:45818/mcp` to Claude Code’s settings.

McpMux runs a local gateway so several AI clients can use the same MCP servers. It helps keep server settings and credentials in one place.

Open on GitHub

What McpMux does

McpMux is a desktop app for Windows, macOS, and Linux. It runs a local MCP gateway that Claude Code and other clients can connect to. Add servers from its built-in registry or configure your own; the app displays their tools, prompts, resources, and connection status.

Clients connect at http://localhost:45818/mcp. Credentials are encrypted in the operating system’s keychain, and OAuth tokens refresh automatically. Spaces keep servers, credentials, and permissions separate. You can map a folder to a Space and a Feature Set, but matching uses the exact path, so opening the project from a different path won’t match that mapping.

Feature Sets control which tools, prompts, and resources a client can access. Server changes sync to connected clients without a manual refresh. The app is built with Rust and Tauri 2.

What it helps with

share MCP servers across multiple AI clients
keep server credentials in the operating system keychain
separate work and personal server setups
assign different tool bundles to specific folders

Example prompts for the agent

Use the connected GitHub tools to inspect this repository.
For this project folder, use the database tools from the right Space.
Show me the tools and resources available from connected MCP servers.

How to install McpMux

Install

The MCP registry has no launch command for it: see the repository README

Step by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more

Questions about McpMux

How do I install McpMux for Claude Code?

Download the app from https://mcpmux.com/download, then add the gateway address http://localhost:45818/mcp to Claude Code’s settings.

What does McpMux do?

It runs a local MCP gateway that lets multiple AI clients use the same connected servers. Server settings and credentials are managed centrally.

How does McpMux choose tools for a project folder?

Map the folder to a Space and Feature Set. The match uses the exact path, so a different path needs its own mapping.

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