Claude Code Channels (MCP) now talks bidirectionally to Codex App Server in the same live session (first bridge)

What variant of Codex are you using?

CLI

What feature would you like to see?

Just 24 hours after Anthropic dropped Claude Code Channels (research preview), I built the very first bridge that plugs MCP notifications directly into OpenAI’s fully open-source Codex App Server (JSON-RPC).

Key points:
• True bidirectional communication inside one single live session
• Full mid-execution injection works both ways
• Pure local MCP server — no cloud hop
• Most meta: the entire AgentBridge was co-written by Claude Code + Codex while they were using the bridge to build itself

Repo + live demo (Claude literally greets Codex and they co-author the code together):
https://github.com/raysonmeng/agent-bridge

I also just opened a symmetric discussion on the Anthropic side:
https://github.com/anthropics/claude-code/issues/36871

This feels like the foundation for a universal Agent-to-Agent collaboration protocol.

Would love feedback from the Codex team or anyone experimenting with interop!

Additional information

• Repo + live demo (Claude and Codex greeting each other): https://github.com/raysonmeng/agent-bridge
• Screenshot of the demo (Claude & Codex collaborating in same session) attached below
• This bridge uses pure local MCP server + JSON-RPC, no cloud hop
• This could be the foundation for a universal "Agent-to-Agent MCP" protocol across providers

<img width="1389" height="642" alt="Image" src="https://github.com/user-attachments/assets/92cb9b89-fcd9-4967-98e0-5439922119f8" />
<img width="1389" height="642" alt="Image" src="https://github.com/user-attachments/assets/4857d7bb-8c38-4de3-9e5d-853caa91b518" />
<img width="1389" height="642" alt="Image" src="https://github.com/user-attachments/assets/87022283-201b-48da-8ec7-761ce11c412d" />
<img width="1389" height="642" alt="Image" src="https://github.com/user-attachments/assets/934bd032-5f97-4c21-8b7f-916b40b35a98" />