agmsg

What it does

When two CLI agents are working the same problem, you become the courier pasting one's output into the other. This removes that: Claude Code, Codex, Gemini CLI and friends exchange messages through a shared local SQLite file — no daemon, no network, no MCP layer. These are peer sessions, not subagents. The catch is that a wrong assumption now propagates without a human reading it in passing, so check the traffic on anything that matters. MIT.

Summary based on the project's own description. The Japanese page has a fuller beginner guide: setup difficulty, what to prepare, and a step-by-step start.

Screenshots & visuals

Before you start

• Setup difficultySome setup needed
• Command lineRequired
• API keyNot required
• Sends data onlineNo

Judged automatically from the project's own metadata. Always confirm on the official page.

agmsg FAQ

Is agmsg free?

Yes. It runs on your own machine, so there is no usage-based cost either.

Do I need to install anything or write code to use agmsg?

It needs the command line. If you are not comfortable typing commands, expect to get stuck during setup.

Does agmsg work on a phone?

No. It needs a computer.

Can I use agmsg commercially?

The licence is MIT, which permits commercial use. Conditions such as keeping the copyright notice still apply, so read the licence text before shipping it inside something.

How it compares

The conditions that decide whether you can actually use it, side by side.

"Sends data out" means your input is uploaded to someone's server. Pick "No" when the material cannot leave your organisation.

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