AI Pulse · Under the Radar

Anthropic just added cross-session messaging to Claude Code so agents can talk to each other across different coding tasks. The same week, a tiny Rust tool called herdr shipped that does roughly the same thing, weighs about 10MB, and works with Claude Code, Codex, Devin, or anything else you point at it. No MCP protocol, no server config. You run it in a terminal, and your agents can see each other and pass messages.

The timing matters more than the tool itself. Three separate indie developer blogs wrote herdr up within days, which means people building real agent workflows hit the same problem at the same time and went looking for an answer. When independent voices converge on something obscure, it usually means the need is real even if the solution is still rough.

What herdr does is give agents lightweight awareness of what other agents are doing in the same workspace. If one agent is debugging a database query and another is writing API tests, they can coordinate without you manually copying context between sessions. It’s a terminal multiplexer, so it sits between your shell and the agents, watching what they do and letting them broadcast state. Anthropic’s version is built into Claude Code and probably more polished, but herdr works across models and doesn’t need you to adopt a new protocol.

For anyone running multiple agents on the same codebase, this is the kind of coordination layer that stops being optional once your workflows get complex enough. You either build message-passing yourself, adopt something like MCP, or reach for a small tool that does one thing. We bake this sort of agent orchestration into the Omni Command Centre so teams don’t have to stitch together their own plumbing every time a new model ships.

The original post has install instructions if you want to try it. It’s early, but the problem it solves isn’t going away.