agmsg
1,527 starsCross-agent messaging via SQLite: lets Claude Code, Codex, Gemini CLI and other CLI agents message each other through a shared mailbox — no daemon, no network, only bash and sqlite3.
- First published：2026-04-02
- data as of：
- 2026-09-30
- Licence：
- MIT
When to use it
When running multiple CLI agents from different vendors and you want them coordinating or handing off.
Caution
Messages are plaintext SQLite on disk; the protocol is minimal (not full A2A). The README claims Claude Code, Codex, Gemini and Copilot support.
Install prompt
請幫我安裝「agmsg」技能：從 https://github.com/fujibee/agmsg 取得完整的技能目錄，放進我的 Agent 的技能目錄（例如專案內的 skills/ 資料夾，或該 Agent 文件指明的全域技能位置），確認裡面的 SKILL.md 存在、frontmatter 的 name 與 description 完整，然後列出這個技能宣告的腳本、外部工具與 API 需求，先不要執行任何腳本。Paste this to your agent. It deliberately contains no tool subcommands — check the tool's official docs for commands.
Compatible with
Related patterns