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Slack has two separate connections in Atlan. Your personal connection supplies Slack tools through MCP Gateway. Your organization’s workspace connection enables authorized Atlan previews in public Slack channels.

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Before you begin

Slack must be configured for your Atlan deployment. You can connect your own Slack account. An Atlan organization administrator must connect or change the shared workspace connection, and Slack may require workspace approval.

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Connect personal tools

  1. Open the Slack app from Atlan’s Store.
  2. Under Your Slack tools, select Connect your account.
  3. Finish the Slack authorization and return to Atlan.
  4. Select Refresh status and confirm the connection is Connected.
  5. Select Open Slack tools. In an MCP client, refresh the tool list and make a read-only Slack call.
Atlan registers the personal MCP server for this connection. Its tools depend on the current Slack catalog and the permissions you authorized. An organization workspace connection does not connect your personal tools.

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Enable workspace previews

  1. As an organization administrator, open Slack → Connections.
  2. Under Share Atlan previews in Slack, select Connect workspace. A framed app can offer Manage workspace in browser to complete this with organization management access.
  3. Authorize the workspace and return to Atlan.
  4. Select Refresh status. If Preview permissions missing or Reconnect required appears, reconnect and grant the required permissions.
  5. Share a test link to an Atlan artifact you are permitted to share in a public Slack channel. Confirm the expected preview appears.
Preview creation still checks Atlan access. Eligible output files may be copied into Slack when file permissions are authorized. Slack retains those copies after Atlan access changes.

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Reconnect and disconnect

Use Reconnect when the app says authorization must be renewed. Disconnecting your personal account revokes its connection and removes its registered MCP server. Disconnecting the workspace stops Atlan previews; files already copied to Slack remain there. For missing tools or refused calls after a successful connection, see MCP Gateway errors.