Claude Code sessions can message each other now. Here's how I'm using it to give them shared memory

If you haven't seen it yet, Anthropic shipped cross-session messaging for Claude Code last week so your sessions can now find each other and talk. A session working a feature branch can tell your review session what just landed. It's a really cool feature and I think it needs more fanfare.

I've been experimenting with a setup to get the most out of it, by having sessions use messages for live coordination, and logging the stuff worth keeping to a local tracker. That way the next fresh session reads the tracker and just continues where the last one left off.

I wrote up how I'm using it here: https://www.getpad.dev/blog/multi-session-claude-code

(Disclosure: the tracker in the write-up is Pad, which I build, but the pattern works with anything your sessions can read and write, i.e. Notion, Obsidian, etc.)