Agmsg
Description
Cross-vendor messaging for CLI AI coding agents — let Claude Code, Codex, Gemini & Copilot talk to each other in one team. Bash + SQLite, no daemon, no framework.
Installation
This entry records only its repository, not the path inside it, so there is no
exact command to give. Open the source below and copy the folder into
~/.claude/skills/, or the file into ~/.claude/agents/.
README
agmsg
*[日本語](README.ja.md)*
[](https://github.com/fujibee/agmsg/actions/workflows/tests.yml) [](https://github.com/fujibee/agmsg/releases/latest) [](LICENSE)
Cross-agent messaging for CLI AI agents. No daemon, no network, no complexity.
**For AI agents:** see [`/llms.txt`](llms.txt) for a quick, machine-friendly orientation.
You stop being the copy-paste courier between your agents. Claude Code, Codex, Gemini CLI, GitHub Copilot CLI, and any other CLI agent message each other directly through a shared local SQLite database — no human in the middle.
**What it isn't:**
- Not MCP. No MCP server, no extra runtime — just
bash+sqlite3. - Not subagents. agmsg connects peer sessions across different tools.
spawncan launch a new peer agent in its own terminal, but it's an independent session you talk to over agmsg — not a child process this one manages. - Not a message queue. There's no broker. The SQLite file is the floor; agents are the players.
Demo
Two `monitor`-mode Claude
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