Message your other Claude Code sessions changedcross-session-messaging
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Upstream edited this page at 10 Nov 2026 02:50 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 10 Nov 2026 03:07 UTC.
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5353### Message delivery
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55The receiving Claude reads the message between tool calls during an active turn, so a running tool is never interrupted. When the receiving session is idle, Claude Code starts a new turn with the message.
55The receiving Claude reads the message between tool calls during an active turn. When the receiving session is idle, Claude Code starts a new turn with the message.
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5757A message from another session arrives as plain text. If it mentions a file or an [MCP resource](https://code.claude.com/docs/en/mcp.md#use-mcp-resources) with `@`, Claude sees the mention as written and Claude Code attaches nothing, whether the message starts a new turn or arrives during one. Claude can still open a mentioned path on the receiving machine with its own tools, subject to that session's permissions.
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