# Slack
URL: /reference/integrations/slack
Type: reference
Description: Send notifications and updates to Slack channels.
Keywords: slack, integration, api key, connect
Send notifications and updates to Slack channels.

Connect [#connect]

Connect Slack with an API key in **Settings → Integrations**. Open the Slack card, click **Connect**, and provide:

| Field     | Required | Notes         |
| --------- | -------- | ------------- |
| Bot Token | Yes      | e.g. `xoxb-…` |

Supported actions and triggers [#supported-actions-and-triggers]

Actions [#actions]

| Block                                                      | What it does                      |
| ---------------------------------------------------------- | --------------------------------- |
| [Send Slack Message](/reference/blocks/slack-send-message) | Send a message to a Slack channel |

Limits and failure modes [#limits-and-failure-modes]

* The connection can expire or be revoked. When it does, Slack blocks fail with an authorization error until you reconnect in **Settings → Integrations**.
* A disconnected or unconfigured integration makes its blocks unavailable in the Workflow Builder.

{/* TODO(docs): document Slack-specific rate limits and permission errors — not encoded in @stylo/core. */}

Related [#related]

* [Integrations overview](/integrations)
* [All workflow blocks](/reference/blocks)
* [Troubleshooting](/troubleshooting)