Claude Code Enables Cross-Session Messaging for Multi-Agent Collaboration
机器之心 · wechat · 2026-08-08
Anthropic has introduced cross-session messaging to Claude Code, allowing different AI sessions on the same machine to autonomously communicate and align progress.
- Core Capabilities: Developers no longer need to manually copy-paste context. By issuing a simple command (e.g., "notify test-session about API changes"), Claude automatically summarizes and sends the message. It can even proactively alert other sessions if it detects codebase changes affecting them.
- Under the Hood: Uses ListAgents to discover available agents and SendMessage to dispatch information. The receiving session reads messages between tool calls without interrupting ongoing tasks.
- Use Cases: Handing off investigation results, coordinating parallel work trees, querying long-running task statuses, and cross-machine replies.
The feature requires Claude Code v2.1.224+ and is enabled by default on macOS and Linux.
Related event: Claude Code Cross-Session Messaging Enables Multi-Agent Collaboration(17 posts)→
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