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HomeDocsClaude Code CLI 1 Oct 2026
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Nearest release: v2.1.286, published 10 hours before upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Upstream edited this page at 1 Oct 2026 03:42 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 1 Oct 2026 04:07 UTC.

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From line 73 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
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7373A runner serves one owner at a time. The first session a runner picks up locks the runner to that session's owner, and the runner then runs sessions only for that owner, up to a configured capacity. Who the owner is depends on how the session started:
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7575* **Sessions a user starts**: the owner is that user's account.
76* **Claude Tag channel sessions**: Claude runs them with no user account attached, so the owner is the [Claude Tag agent](https://claude.com/docs/claude-tag/concepts/glossary#agent-identity) that started the session. Every channel session that agent starts has the same owner, whoever sent the Slack message, so a runner locked to it serves sessions that different people started when you run it at a `--capacity` above one or with a positive `--drain-grace-sec`. A runner locked to a user never picks these up, and a runner locked to a Claude Tag agent never picks up a user's sessions.
76* **Claude Tag channel sessions**: Claude runs them with no user account attached, so the owner is the [Claude Tag agent](https://claude.com/docs/claude-tag/concepts/glossary#agent-identity) that started the session. Every channel session that agent starts has the same owner, whoever sent the Slack message, so a runner locked to it serves sessions that different people started when you run it at a `--capacity` above one or with a positive `--drain-grace-sec`.
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7878The minimum fleet size is therefore the number of owners you expect to be active at once, counting users and Claude Tag agents.
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