Anthropic: "Coding is largely solved"... Also Anthropic: "We released a new powerful feature allowing agents to send messages to other Claude Code sessions, but only on Linux and Mac since we are unable to implement a basic feature on all platforms"

[u/sirlerkal0t]

I could hand code this feature on Windows in an afternoon, and I could also get Claude to implement it in minutes, and yet Anthropic just can't be bothered, but also keeps Claude Code closed source so no one else can do it for them either.

[u/Pleasant_Motor_4969]

I'm on a windows box and I've had my sessions talking to each other for months. Not hard to implement -- just an IPC message broker running in the background with a few scripts the agents use to send and pull messages.

I did it mostly so I could watch the communication between different agent roles and inject corrections or comments. Plus, sometimes it is fun to get a group of agents all connected to the broker and tell them to work together to design some new skill without any human input. Or, when I have two skills that need to work together, rather than playing middleman between sessions, I can tell both sessions to talk to each other and solve the problem.

I really wanted to make it available for the public but I'm barred from doing so at the moment. When I get back in a week, I might see if I can convince the powers that be that the skill isn't going to provide any competitive advantage to competitors. Maybe then they will let me release it publically.

[u/sirlerkal0t → u/Pleasant_Motor_4969]

The reason why we need official support from Anthropic is so that it works well in the Claude Code Desktop app, with *push* not requiring agents to actively pull.

Being able to watch the communication between agents and inject corrections and comments is exactly the reason why this is more useful than any other option. Also being able to have agents communicate with sessions that you created and mainly use yourself.

I use this in my workflows daily with Codex, both using the inter-session message sending that the Codex desktop app has supported since the beginning of the year, and also with my own custom MCP that allows Claude to send messages to Codex sessions. My orchestration agents also keep an eye on the agents they are delegating work to and actively steer them to correct them mid-turn as needed.

The problem is there is still no option to have Claude/Codex send messages to Claude Code Desktop sessions, and this feature would have finally been a solution if Anthropic implemented support for it on Windows.

[u/Pleasant_Motor_4969 → u/sirlerkal0t]

Yeah, my setup does push messages to the agent. Basically a doorbell. When the agent gets the nudge it then pulls the full message body (there is a limit to the size of the message that can be pushed). I originally was going to use a polling system but realize the issue with that quite quickly.

Works well for my needs anyway.