How Claude Tag works

 
 While a session runs, check in by replying in the same thread. Asking "how's it going?" in the thread is enough; it reads new replies as it works.
 
-Each delivery ends with an "Open session in Claude" link showing the full record of the work, including every tool call. To open it, you need a Claude account in your organization; without one, the link shows a not-found page. If the thread is in a private channel, you also need to be a member of that channel. The page is read-only; follow-ups go in the Slack thread.
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 ### Reply in the thread to steer
 
 Anyone in the channel can steer a running session by replying in its thread, not just the person who started it. That is what Sam did in the walkthrough. Without re-mentioning `@Claude` or starting over, he replied in Jordan's thread, and the session folded his instruction into work already in progress. Add context, redirect the approach, or pick up the result later; a colleague's thread is yours to continue.