What the Claude Slack app can access changedclaude-tag/admins/for-slack-admins
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1717* Invite it with `/invite @Claude` in the channel
1818* Select **Add to channel** on a channel Claude suggests in a direct message. Claude's welcome message, the introduction it posts when a member first opens a direct message with it, suggests public channels this way.
1919* Select **Approve and post** on a message Claude drafts in a direct message for a public channel it isn't a member of. When the member approves, Claude posts the message and joins that channel. [What Claude can do in other channels](/docs/claude-tag/concepts/how-it-works#what-claude-can-do-in-other-channels) covers the flow.
20* Select a channel in a weekly suggestion message. About once a week, Claude sends the person who connected the workspace a direct message that suggests public channels to add it to. That person can stop the suggestions from any of those messages.
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22Claude picks the channels to suggest from public channel names, topics, and purposes, and from public-channel search. Claude doesn't join a channel to evaluate it.
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2124A Claude organization admin can also set [auto-join channel patterns](/docs/claude-tag/admins/restrict-access#block-or-auto-join-channels-by-name), so Claude joins a public channel whose name matches when the channel is created or renamed.
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23When a member selects **Add to channel** or **Approve and post**, or an auto-join pattern matches, Claude adds itself to that channel using its `channels:join` scope. Slack's audit log records the join as the Claude app, with no inviter shown; neither the member's selection nor the matched pattern is visible in Slack's log. If you see a join in the audit log that no one can explain, a member selected one of these buttons or an auto-join pattern matched. Outside these paths, Claude does not join channels on its own.
26When a member selects **Add to channel** or **Approve and post**, picks a channel in a suggestion message, or an auto-join pattern matches, Claude adds itself to that channel using its `channels:join` scope. Slack's audit log records the join as the Claude app, with no inviter shown; neither the member's selection nor the matched pattern is visible in Slack's log. If you see a join in the audit log that no one can explain, a member selected one of these buttons or an auto-join pattern matched. Outside these paths, Claude does not join channels on its own.
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2528Reading a channel's full history requires being added there. Workspace search can surface public-channel content, the same as any app with the search scope.
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