Seamless AI Agent Messaging for Codex & Claude Sessions

Seamless AI Agent Messaging for Codex & Claude Sessions

This skill facilitates the transmission of messages between AI agents operating in different Codex and Claude sessions. It ensures efficient communication by verifying the origin of messages and managing message delivery across multiple agent sessions via vendor-specific procedures.

What this skill does

• Allows a session to send messages to another active Codex or Claude agent session.
• Verifies the origin of incoming messages to ensure authenticity.
• Utilizes an adapter system where each agent type has detailed communication procedures in specific reference documents (`references/codex.md` and `references/claude-code.md`).
• Requires knowledge of your session address, which differs between Codex (`$CODEX_THREAD_ID`) and Claude Code (session name from `ListAgents`).
• Facilitates discovery of target agents, ensuring communication is structured within a vendor-specific scope.
• For cross-vendor communication, enables direct reading from the target's registry.

Who it is for

• Developers working with AI coding agents such as Codex and Claude Code.
• Teams integrating multiple AI agents into their software development processes.

Use cases

• Coordinating tasks among different AI agents running in separate Codex and Claude sessions.
• Enabling centralized monitoring and control over multiple agent processes.
• Streamlining workflow by facilitating communication and status updates between agent sessions.

Technical details

• Integrates with Codex via `$CODEX_THREAD_ID` for identifying and messaging sessions.
• Works with Claude Code by obtaining session names through `ListAgents` and using `$CLAUDE_CODE_MESSAGING_SOCKET` for message exchanges.
• Requires reading Claude session details from configuration files located in `${CLAUDE_CONFIG_DIR:-$HOME/.claude}/sessions/`, ensuring the correct `messagingSocketPath` is utilized.
• Communicates within the constraints of XDG runtime directories and other system-specific path configurations.

Source & Licence

This package is built on open-source work published by tony (tony/skills) and distributed under MIT. The original licence text and copyright notice are included in your download.

Personal and commercial use, modification and redistribution are permitted, provided the original copyright and licence notice are retained.

Your purchase covers curation, licence verification, packaging, documentation and instant delivery. It does not grant exclusive rights to the underlying open-source code, which remains available under its original licence.

Delivery & Support

• Delivery: instant — a secure download link is emailed to you as soon as payment is confirmed.
• Format: ZIP archive containing the skill files, documentation and the original licence.
• Support: support@mcpcart.com — we aim to reply within 2 business days.
• Updates: updates are included only where stated on this page.

Refunds

This is a digital product delivered immediately after purchase. By completing your order you request immediate delivery and acknowledge that, once the download has been accessed, the statutory right to cancel no longer applies to the extent permitted by law. Refund requests are handled in accordance with our published Refund Policy.

Claude, Codex, Gemini and Cursor are trademarks of their respective owners. MCP Cart is an independent marketplace and is not affiliated with, endorsed by, or sponsored by any of them. Compatibility references describe interoperability only.