Connect your agent - AgentMuxer

For Codex, Claude Code, and OpenCode, paste this prompt into your agent:

Set up AgentMuxer using its recommended installer, including its persistent free-search guidance. Read and follow https://agentmuxer.com/llms.txt

Install

Your agent runs the recommended installer. It connects supported installed clients to AgentMuxer and adds guidance to search the marketplace when a task needs external tools or information.To run setup yourself in a terminal with Node.js 22.18 or later and npm:

npx -y @agentmuxer/setup@latest install

To set up just one client, add --client codex, --client claude-code, or --client opencode.

On first installation, setup starts your client’s browser sign-in. Complete the prompts for each client you connect. Sign-in is required for free and paid use.Existing credentials are preserved. If setup prints a reconnect command, run that command and finish sign-in.

Restart and try it

Restart open coding-agent clients to load the connection, then paste this into a new conversation:

Use AgentMuxer to find tools that could help with this project. Recommend one, explain what it does and its price, and don't execute a paid call.

This first prompt explores the catalog without buying a tool call. Next, give your agent a task.

Other clients and manual setup

The installer also adds reusable discovery guidance. Manual MCP registration only adds the connection.

ChatGPT or Claude
Codex
Claude Code
Cursor
VS Code

In your platform’s connector settings, add a custom remote MCP connection using this URL, then complete sign-in:

https://mcp.agentmuxer.com/mcp

Start a new conversation after connecting. Custom connector availability depends on your platform and plan.

Run both commands, complete browser sign-in, and restart open Codex sessions:

codex mcp add agentmuxer --url https://mcp.agentmuxer.com/mcp
codex mcp login agentmuxer

Run both commands, complete browser sign-in, and restart open Claude Code sessions:

claude mcp add agentmuxer --transport http https://mcp.agentmuxer.com/mcp
claude mcp login agentmuxer

Add this to .cursor/mcp.json, preserving any existing servers. Complete sign-in when Cursor connects.

{
  "mcpServers": {
    "agentmuxer": { "url": "https://mcp.agentmuxer.com/mcp" }
  }
}

Add this to .vscode/mcp.json, preserving any existing servers. Complete sign-in when VS Code connects.

{
  "servers": {
    "agentmuxer": {
      "type": "http",
      "url": "https://mcp.agentmuxer.com/mcp"
    }
  }
}

Manage the connection

Check setup or reconnect

Run the setup status command:

npx -y @agentmuxer/setup@latest status

Follow any reconnect instruction it prints. For client errors or interrupted sign-in, see troubleshooting.

Remove the installer-managed connection

npx -y @agentmuxer/setup@latest remove

This removes the installer-managed guidance and removes or disables its connection. Restart open clients afterward. For a manually added connector, remove it in the client’s settings.

Building and distributing your own agent? Use an application API key with the SDK. That flow does not require browser sign-in for each run.

​Other clients and manual setup

​Manage the connection

Other clients and manual setup

Manage the connection