June 4, 2026
Git in the middle of a robot feud
Claude Code and Codex Can Have Real-Time Conversation via Git
Two coding bots start "talking" through Git, and the internet instantly starts arguing
TLDR: A new tool lets Claude and Codex exchange messages through a shared code project, creating a saved record of their back-and-forth. Commenters split fast: some loved the convenience, while others roasted it as unnecessary or joked they’d already done the same thing with duct tape and vibes.
The big pitch here is deliciously simple: a new tool called h5i lets two coding AIs — Claude and Codex — pass messages to each other through a shared code project, so they can work together while every exchange is saved in the project history. In plain English, it’s like giving two robot coworkers a shared notebook and letting everyone peek at the receipts. Supporters are calling it a time-saver and a neat way to keep AI teamwork organized, especially when one bot gets overwhelmed working alone.
But the comments are where the real fireworks start. One camp was instantly sold, with users basically saying, “Finally, my two favorite robot coders can stop using me as the middleman.” Another camp was far less impressed, asking the brutal question: why does this middle layer even need to exist if the tools already produce logs and can already be made to communicate in other ways?
Then came the classic internet escalation: the “I built this months ago” crowd. One commenter shrugged that they had already hacked together something similar with simple files and folder watchers, which turned the launch into a mini showdown between official release and weekend side-project bragging rights. And the funniest jab of all? A user joked that Claude and Codex could communicate through a Git repo, a file, a terminal, a human messenger, or even by chess board states after both sides castle. So yes, the tool is real, the idea is useful, and the community response is a chaotic mix of hype, skepticism, one-upmanship, and very online comedy.
Key Points
- •The article introduces Agent Radio (`h5i msg`) as a multi-agent messaging feature added in h5i version 0.1.5.
- •Agent Radio is presented as a way for coding agents such as Claude Code and Codex to collaborate through a shared Git repository while preserving communication history.
- •The setup described includes installing h5i, initializing it in an existing repository, running `h5i msg setup`, and launching agents in separate terminals.
- •The article says users can monitor agent exchanges with `h5i msg watch` and post a summary to a GitHub Pull Request with `h5i share pr post`.
- •Technically, the system uses the i5h protocol, where each message is a JSON line stored in `messages.jsonl` under `refs/h5i/msg`, enabling immutable, conflict-free, grow-only message logs via Git push/pull.