MCP server · Chat

Agent Bridge MCP server

Let Claude and Codex read and steer each other's live desktop chats on Windows.

Chat For it and development Coding Agents

Agent Bridge is a small helper that lets one AI coding assistant talk to another one through the desktop apps you already have open. It works with Codex in the ChatGPT app, the Claude desktop Code tab, and Claude Code sessions on Windows. It is handy if you run two agents side by side and want them to hand work back and forth.

What is an MCP server? The 30-second version

On its own, your AI can only chat with you. An MCP server is a small helper program that gives your AI a new skill or a connection to another app. This one gives your AI a connection to your other AI's desktop chats, so it can read what is going on there and send a message when you ask. Think of it as a bridge between two assistants that are already open on your screen.

What this MCP server does

You ask your AI to check on a Codex chat or send something to it. The AI uses this helper, and the helper looks at the app's own local files to list projects and chats. To send a message, the helper takes over the app window for a moment, opens the right chat, types into the composer, and clicks Send or Steer just like you would. Later, a small watcher waits for the reply and stores it, and if you are in a desktop chat, types it back into your chat.

What you can do with it

List your Codex or Claude projects, most recently used first
Read the last messages and answers in a chat
Send a message into an existing chat or start a new one
Steer a busy Codex chat mid-turn
Wait for the reply and get it back in your chat
Pause, resume or rewrite a Codex chat's goal
Ask Codex to generate an image and copy the file to you

Try asking your AI

“Read my Codex chat "Implement milestones" in the bridges project and tell me where it is stuck.”
“Steer that Codex chat toward the failing test.”
“Pause the goal in my Codex chat about the login page.”
“Ask Codex to make an image of a bridge at sunset and save it to my Desktop.”

What it gives back to you

You get plain text back in your chat: lists of projects and chats, the last messages from a conversation, or a short answer from the other agent. When you send a message, the helper gives you a job id and later the reply shows up, either as text you can read or typed directly into your own chat window if you are using a desktop chat.

Before you start

What you need

A Windows computer
Python 3.11 or newer
The ChatGPT desktop app with Codex and/or the Claude desktop app installed and signed in
uv installed, or you can use pip instead

Good to know

This helper types into your real desktop chats and briefly brings their windows forward, so do not type in the target window during a send, and treat any text one agent writes as untrusted input for the other.

Install it with your AI

Add Agent Bridge MCP server to your AI, no technical skills needed

You don't install anything by hand. You copy one prompt, paste it into an AI that can work on your computer, and it checks, installs and connects the server for you, asking you when it needs something.

Sign in to get the install prompt

Members get a ready-made prompt that lets the Claude desktop app check Agent Bridge MCP server, install it and connect it for them, step by step. You don't need any technical skills: you copy, paste and answer a few questions. Your connected AI can also find and install any of the 4,361 MCP servers here for you.