codex-claude-bridge

Overview

This project creates a practical bidirectional bridge between Claude Code and OpenAI Codex CLI, allowing two AI coding agents to hold a conversation. It uses Claude Code Channels for push notifications and a blocking MCP tool on Codex's side, with a real-time web UI to monitor the conversation. The bridge is asymmetric - Codex-initiated turns feel real-time, while Claude-initiated messages wait until Codex polls or makes another request.

Try asking AI

After installing, here are 5 things you can ask your AI assistant:

• send_to_claude

  Sends a message from Codex to Claude and waits for reply

  Try:Use Claude bridge to discuss whether we should use Redis or Memcached for caching.Try:Ask Claude about the best practices for API rate limiting.
• check_claude_messages

  Checks for messages from Claude in the bridge queue

  Try:Check if Claude has responded yet.Try:See if there are any messages waiting from Claude.
• send_to_codex

  Sends a message from Claude to Codex

  Try:Send a suggestion about database optimization to Codex.Try:Reply to Codex with your thoughts on the proposed solution.

Comparable tools

Installation

# Clone and install
git clone https://github.com/abhishekgahlot2/codex-claude-bridge.git
cd codex-claude-bridge
bun install

# Register with Claude Code
# Add to ~/.mcp.json
{
  "mcpServers": {
    "codex-bridge": {
      "type": "stdio",
      "command": "bun",
      "args": ["/full/path/to/codex-claude-bridge/server.ts"]
    }
  }
}

# Register with Codex CLI
# Add to ~/.codex/config.toml
[mcp_servers.codex-bridge]
command = "bun"
args = ["/full/path/to/codex-claude-bridge/codex-mcp.ts"]
tool_timeout_sec = 120

# Start Claude Code
claude --dangerously-load-development-channels server:codex-bridge

# Start Codex CLI
codex

FAQ

Why not use native A2A protocol?

Neither Claude Code nor Codex exposes native A2A integration today. This bridge uses Claude Code Channels and MCP as the most practical solution.

Is the conversation truly bidirectional?

Not symmetric full duplex. Codex-initiated turns feel real-time, but Claude-initiated messages wait for Codex to poll or make another request.

On Hacker News

Recent discussion from the developer community.

• Show HN: A Bridge Between Claude Code and Codex Using Channels and MCP▲ 2
  Story by darkbatman · 2026-03-22

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