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

[raysonmeng]

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:
anthropics/claude-code#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

[github-actions]

Potential duplicates detected. Please review them and close your issue if it is a duplicate.

• Support inbound MCP notifications routed into an active Codex CLI session #15299
• Interactive CLI/TUI: opt-in local ingress for trusted local controllers (avoid PTY input emulation) #15355

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[raysonmeng]

Potential duplicates detected. Please review them and close your issue if it is a duplicate.

• Support inbound MCP notifications routed into an active Codex CLI session #15299
• Interactive CLI/TUI: opt-in local ingress for trusted local controllers (avoid PTY input emulation) #15355

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Thanks for flagging. I’ve reviewed both:
∙ #15299 requests inbound MCP notification support for Codex CLI
∙ #15355 requests a local ingress API for trusted controllers
My issue is related but distinct — it’s not a feature request from scratch. It’s a working proof-of-concept that already bridges Codex App Server with Claude Code Channels bidirectionally in the same session.
Repo: https://github.com/raysonmeng/agent-bridge
This could serve as a concrete reference implementation for both #15299 and #15355. Happy to collaborate with anyone

[etraut-openai]

Moving to discussion since this isn't a feature request or bug report.