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Slack gives your agent access to your connected Slack workspace. The agent can send messages, read channel history, list channels, search conversations, and take related Slack actions while it responds to chat messages or completes tasks.

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What it does

When Slack is enabled on an agent, the agent can automatically perform Slack actions as part of its reasoning process. You ask a question or give it a task — the agent decides when and how to use your Slack account on your behalf.

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Prerequisites

You must have an active Slack connection in your workspace before enabling this tool. If no active connection exists, the toggle is disabled.
  1. Go to Integrations for your workspace.
  2. Find Slack in the integrations grid.
  3. Click Connect and complete the OAuth flow.
  4. Return to your agent and enable the tool.
If you previously connected Slack before the multi-action update, reconnect Slack in Integrations so the account can use the expanded action set.

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Adding the tool to an agent

  1. Open an agent in the editor.
  2. Click the button with the tooltip Add MCP Tool or Sub Agent.
  3. In MCP Tools, click Slack. The Slack node appears on the canvas.
  4. Click the node to open the Settings panel on the right.
  5. In the Authentication field, select the connected Slack account the agent should use.
  6. If no active connection is found, the settings panel shows a warning with a link to Integrations to connect first.

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Use cases

  • Summarize unread messages in a standup channel.
  • Post a weekly rollup to a team channel after a workflow finishes.
  • Find the right channel and list recent conversation history.
  • Draft a blocker follow-up message from earlier workflow output.

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Notes

  • The agent uses your connected Slack account to perform actions. Make sure the OAuth connection has access to the channels your workflows need.
  • This tool counts as 1 credit per action the agent performs.
  • OAuth may show third-party authorization branding during the connect flow.
See also: Integrations, Creating and Configuring