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agmsg
Cross-vendor messaging for CLI AI coding agents — let Claude Code, Codex, Gemini and Copilot talk to each other.
Day 43 since launch · Launched 25 August 2026
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What is agmsg?
agmsg is a messaging layer that lets CLI AI coding agents from different vendors communicate. Claude Code, Codex, Gemini CLI and Copilot can exchange messages, hand off tasks and coordinate through a shared protocol.
Pros
- First cross-vendor agent messaging protocol
- Enables multi-agent handoffs
- Vendor-agnostic design
Cons
- Bleeding-edge and experimental
- Requires running multiple agents
- Protocol still evolving
Who should use agmsg
Developers orchestrating multiple AI coding agents from different vendors.
Who may not need it
Single-agent users with simple workflows.
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