McpMux
Install McpMux so you configure each MCP server once and point every AI coding client at one local gateway instead of duplicating JSON configs.
Overview
McpMux is a MCP server for the Build phase that acts as a local gateway so you configure MCP servers once and connect every AI coding client through one endpoint.
What is this MCP server?
- Configure MCP server entries once in McpMux instead of copying the same server blocks into every client config
- Local gateway pattern: one endpoint that multiple AI coding clients can attach to
- Reduces drift when you add, remove, or update tools across Claude Code, Cursor, Codex, and Windsurf
- Published MCP server package io.github.mcpmux/mcp-mux at schema version 2025-12-11 (server version 0.1.1)
- MCP integration layer, not a replacement for individual skills or marketplace bundles
- Official MCP server id: io.github.mcpmux/mcp-mux
- Server package version 0.1.1 per published server.schema.json
- Repository: github.com/mcpmux/mcp-mux
What problem does it solve?
Solo builders waste time and introduce errors re-copying the same MCP server definitions into every AI client whenever a tool or credential changes.
Who is it for?
Indie builders who daily switch between Claude Code, Cursor, or Codex and run a growing set of MCP integrations.
Skip if: Builders who use one client with a tiny fixed MCP list and do not need a shared gateway or central config.
What do I get? / Deliverables
After you register McpMux, your MCP catalog stays in one place and each supported agent client can share the same local gateway without maintaining parallel configs.
- One centralized MCP server configuration consumed by multiple AI clients
- A stable local gateway endpoint instead of per-client duplicate server blocks
- Easier updates when rotating API keys or bumping MCP server versions across your agent stack
Recommended MCP Servers
Journey fit
McpMux belongs in Build because wiring MCP into agents is the main job of the solo-builder stack; the gateway is infrastructure you set up while building and extending agent workflows, not a launch or growth tactic. It is cataloged under agent-tooling because it does not implement a single domain API—it multiplexes many MCP servers for multiple clients from one local process, which is exactly how builders operationalize tools for Claude Code, Cursor, and similar agents.
How it compares
MCP gateway and config mux, not an agent skill or a curated skills marketplace.
Common Questions / FAQ
Who is McpMux for?
McpMux is for solo and small-team builders who use multiple AI coding clients and want one place to manage MCP servers instead of editing each app's config separately.
When should I use McpMux?
Use McpMux during Build when you are standing up agent tooling—especially after you add a second client or your MCP server count starts to grow and drift between environments.
How do I add McpMux to my agent?
Register the io.github.mcpmux/mcp-mux MCP server in your client's MCP settings per mcpmux.com and the repo docs, point clients at the local gateway, then attach your existing MCP servers through McpMux rather than duplicating them per client.