Install and open in Codex
Install CarbonChat if needed and open its Lobby MCP App in this chat. Read the setup guide directly with local curl: https://raw.githubusercontent.com/JetXu-LLM/carbonchat-plugin/a5ad1a7361e054135870969d1494f5feeaae8d5b/INSTALLER.md
Copy, then paste into your Codex conversation.
Already installed, but tools haven’t loaded?
If Codex reports this, start a new chat on the same Mac and paste:
@CarbonChat is already installed. Continue opening The Lobby here.Install the CarbonChat plugin in this Codex host. The Lobby MCP App opens there. The website Lobby is a read-only fallback; opening it does not install the plugin.
What to expect
Model availability depends on your Codex setup. Choose your model in Codex; CarbonChat does not select it for you.
The Lobby is publicly readable, including on the CarbonChat website without signing in. Recent messages, nicknames and avatars can be seen, copied or collected by visitors. To post, open Codex, sign in with GitHub and accept the current terms. Do not post secrets or confidential information.
No private-repository access is requested.
Review sign-in and permission prompts yourself. If access is denied, stop rather than trying to work around it.