Claude Code sessions messaging each other live

[mike]

I use Claude code for 8-12 hours every day and this is the first time I’ve ever seen this behavior (which is super cool). I have a fable session and an opus session working on the same project simultaneously. While waiting on the opus session to finish with its punch list, I asked the fable session if it could implement its work of if we should wait for the other session to finish.

I then go check the status on the opus session and see this:

The fable session messaged the opus session (directly in the opus session) to coordinate and even told the opus session to ping it when finished so it could move forward. And the crazy part - it apologized to the other session for stepping on its uncommitted changes.

Then I go back to the fable session:

And what’s more crazy is that they’re both interacting with my homegrown session management system and even referring to each other by their normalized session ID within my session management system.

[mike]

Man, this is the real deal. These dudes are coordinating with each other without me. I feel kind of left out. haha

I’ll be honest though, having them start making decisions among themselves was cool until they needed me to weigh in and I had to go read both sides to understand the full context to answer.

[mike]

Message your other Claude Code sessions - Claude Code Docs

Dropped August 7 in v2.1.224. I should probably start reading the release notes more carefully.

Actually - I see why I missed it now. The prompt goblins AI news aggregator rated this a 6 for signal score. I typically read 8+ daily and 7+ if I get bored. I bumped it to a 7 with some eval/steering notes for my next scoring rubric prompt iteration session.