> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/harness-platform/3.0/harness-platform-resources/triggers/trigger-pipelines-using-slack-events.md).

# EventRelay Slack Webhook triggers

This topic provides information on configuring EventRelay slack webhook triggers

Trigger Pipelines Using Slack Events

You can trigger pipelines in response to Slack messages or events that match specific payload conditions you set up in a Harness trigger. For example, when a specific message is posted in a Slack channel or a particular event occurs, and your trigger settings match the payload conditions, a CI or CD pipeline can run.

Triggers enable event-driven CI/CD and support practices like building and/or deploying with every relevant Slack interaction.

{% hint style="info" %}
**NOTE**

Currently this feature is behind the Feature Flag `CDS_EVENT_BRIDGE_WEBHOOK` and `CD_TRIGGERS_REFACTOR`. Please contact [Harness Support](mailto:support@harness.io) to enable this feature.
{% endhint %}

### Add a trigger to a pipeline <a href="#add-a-trigger-to-a-pipeline" id="add-a-trigger-to-a-pipeline"></a>

First, let’s configure a Slack webhook to create a trigger.

#### Configure a webhook <a href="#configure-a-webhook" id="configure-a-webhook"></a>

Steps to Create a Slack Webhook

1. Go to **Account**/**Project** settings and click on **Webhook** under Resources.
2. Click on **New Webhook**.
3. Enter a **Name** for the webhook.
4. Select the type of the webhook. In this case, **Slack**.
5. For Auth type, we have two options **No Auth** if you have authentication to your source. no additional configuration is required. **HMAC** for Hash-Based Message Authentication Code authentication

Now, click on **Add** to save webhook.

The webhook is now created, click on the webhook you created earlier and copy the **Webhook URL** provided.

#### Configure a trigger <a href="#configure-a-trigger" id="configure-a-trigger"></a>

To link this webhook to trigger your pipeline, navigate to the pipeline for which this webhook will be used.

1. Select **Triggers** in the top right corner of the page.
2. Click on **New Trigger** and select **Event Relay**.
3. On the configurations page, provide a **Name** for the webhook.
4. Under **Listen on New Webhook**, **Event Relay** is selected by default for **Payload Type**. When selecting Webhooks, a pop-up page will display all the configured Generic and Slack webhooks.

Select the Slack webhook you created earlier.

Click on **Continue**.

5. In the **Conditions** page, give the appropriate **Header Conditions** and **Payload Conditions**. Click on **Continue**.
6. In the **Pipeline Input** page, you can provide any Pipeline input variables as per your requirement. Click on **Create Trigger**

#### Configure Slack with the Webhook <a href="#configure-slack-with-the-webhook" id="configure-slack-with-the-webhook"></a>

This section explains how to configure Slack with your webhook to enable real-time notifications.

Follow these steps to integrate the webhook and set it up for bot events in your chosen channel:

1. Go to the [Slack website](https://api.slack.com/) on your browser.
2. After logging in, click on **Your Apps** located in the top-right corner of the page.
3. On the **Your Apps** page:
   * Select an existing app where you want to configure your webhook.
   * To create a new app, click **Create New App**. 1. Choose **From a manifest** if you want to use a manifest file to define the app's basic info, such as scope and settings: - Select the workspace where you want the app to be used. - Update the JSON content based on your requirements, such as the app's name, settings, etc. - Click **Create App**. 2. Choose **From scratch** to manually add the app name and workspace through the UI.
4. In the **Your Apps** page, under **Features** in the left navigation bar, go to **Event Subscriptions**.
5. Turn on **Enable Events**.
6. In the **Request URL** field, paste the webhook URL you configured earlier. The URL will be automatically verified to ensure it is valid.
7. Under the **Subscribe to Bot Events** section, add the events that should trigger the webhook. Click **Save Changes**.
8. Navigate to your Slack application and open the channel where you want the webhook to trigger events. In the channel settings, go to the **Integrations** tab and add the app you just created.

For more information, visit the [Slack Documentation](https://api.slack.com/apis/events-api).

Now that Slack is configured, any relevant Slack event in the configured channel will trigger the pipeline.

{% @harness-feedback/feedback %}