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cmux-claude-codex-cross-runtime-messaging

v1.0.0

Run a Claude Code agent and a Codex CLI agent as messaging peers in cmux panes, each named as a tab and both in the agent traffic log. Codex has no SendMessage and Claude's peer socket needs auth, so the cross-runtime hop is keystroke injection (cmux send + send-key Enter) through a small helper that also logs to xs explicitly; each agent names its own tab first via cmux identify + tab-action rename. Covers the Codex TUI parking on a startup modal with no way to read its screen (diagnose from ~/.codex logs and the missing rollout file, inject one Enter), and where the lead, teammate and Codex transcripts live on disk afterwards. Verified 2026-08-27: five rounds in 50 s, every message exactly once.

Claude Code

By voitta-aiLicense: MIT3 GitHub starsUpdated 2 hours ago

Directory evidence

Runtimes
Claude Code
Parsed components
0 skill or MCP entries
Source updated
Sep 28, 2026
Manifest status
Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install cmux-claude-codex-cross-runtime-messaging for Claude Code

Installs for the current user
claude plugin marketplace add IchenDEV/agent-plugin-mkt
claude plugin marketplace update agent-plugin-marketplace
claude plugin install cmux-claude-codex-cross-runtime-messaging@agent-plugin-marketplace

Paste and run these commands in a terminal with Claude Code. They add and refresh the PluginsMP catalog, then install this plugin.

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually
git clone https://github.com/voitta-ai/skillz

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The plugin root is plugins/cmux-claude-codex-cross-runtime-messaging/.

Plugin files

plugins/cmux-claude-codex-cross-runtime-messaging/
└── .claude-plugin/plugin.json

Plugin manifests1

plugins/cmux-claude-codex-cross-runtime-messaging/.claude-plugin/plugin.json
{
  "name": "cmux-claude-codex-cross-runtime-messaging",
  "description": "Run a Claude Code agent and a Codex CLI agent as messaging peers in cmux panes, each named as a tab and both in the agent traffic log. Codex has no SendMessage and Claude's peer socket needs auth, so the cross-runtime hop is keystroke injection (cmux send + send-key Enter) through a small helper that also logs to xs explicitly; each agent names its own tab first via cmux identify + tab-action rename. Covers the Codex TUI parking on a startup modal with no way to read its screen (diagnose from ~/.codex logs and the missing rollout file, inject one Enter), and where the lead, teammate and Codex transcripts live on disk afterwards. Verified 2026-08-27: five rounds in 50 s, every message exactly once.",
  "version": "1.0.0",
  "author": {
    "name": "voitta-ai"
  },
  "homepage": "https://github.com/voitta-ai/skillz",
  "repository": "https://github.com/voitta-ai/skillz",
  "license": "MIT",
  "skills": "./skills/"
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[cmux-claude-codex-cross-runtime-messaging on Agent Plugins Marketplace](https://pluginsmp.com/plugins/cmux-claude-codex-cross-runtime-messaging)