Claude Code Adds Cross-Session Messaging for Multi-Agent Workflows

Lanky-Cartoonist-358 · reddit · 2026-08-10

Claude Code version 2.1+ introduces game-changing cross-session messaging capabilities. Using native tools ListAgents and SendMessage, developers can now send direct context summaries to other running instances in real time.

This eliminates the need to constantly copy-paste terminal context, re-explain breaking refactors, or manually switch git worktrees, greatly streamlining multi-agent engineering workflows.

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