Anthropic launches cross-session messaging for Claude Code
Claude Code users can now have multiple sessions message each other with updates and findings without re-explaining context.
Conversation activity · last 2 days peak 7/hr
Summary, timeline and people extracted by Claude from 9 items across 4 sources · 5h ago. Quotes are verbatim.
Anthropic announced a new cross-session messaging feature for Claude Code that allows different sessions to communicate with each other, sharing updates, findings, and status without exchanging full conversation history or files. The feature is available on macOS and Linux, and Claude can initiate messages automatically when it detects that changes in one session affect another, or users can prompt it to send messages manually.
- Claude Code sessions can now send text messages to each other containing findings, status updates, and answers without sharing full conversation history or files.
- The feature uses ListAgents and SendMessage tools; Claude can initiate messaging automatically when detecting conflicts or users can prompt it manually.
- Messaging works across terminals and machines on macOS and Linux, improving developer workflow when running parallel work in multiple sessions.
- The announcement generated strong developer interest, with 146 upvotes and significant discussion on Hacker News within hours of release.
How it unfolded
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Reaction Tech community engagement on Hacker News
The announcement generates significant discussion on Hacker News with 146 points and 64 comments, indicating developer interest in the new functionality.
“Cross-session messaging lets Claude deliver a message from one of your Claude Code sessions to another.”
Anthropic · Hacker News ↗ -
Report Feature details published
Anthropic publishes official documentation and announces the feature across multiple tech outlets including 9to5Mac, MacRumors, The Decoder, and The Mac Observer.
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Event Anthropic announces cross-session messaging feature
Anthropic releases Claude Code cross-session messaging on macOS and Linux, enabling different sessions to exchange updates, findings, and status information.
What people are saying verbatim
“Cross-session messaging lets Claude deliver a message from one of your Claude Code sessions to another.”
Anthropic, Feature documentation · Claude Code documentation ↗
“New in Claude Code: your sessions can now message each other. Instead of having to re-explain yourself in another session, you can now tell Claude to do it.”
@claudedevs, Anthropic official account · X (Twitter) ↗ · Aug 7
“It goes both ways: you can also ask another session a question and get the answer back in your active session.”
@claudedevs, Anthropic official account · X (Twitter) ↗ · Aug 7
“Claude can also message another session on its own, e.g. when a change it just made affects what that session is working on.”
@claudedevs, Anthropic official account · X (Twitter) ↗ · Aug 7
Voices from the web unedited
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New in Claude Code: your sessions can now message each other. Instead of having to re-explain yourself in another session, you can now tell Claude to do it. It sends a summary (not your history or files), and the other session picks it up mid-task. [video]
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It goes both ways: you can also ask another session a question and get the answer back in your active session. Claude can also message another session on its own, e.g. when a change it just made affects what that session is working on.