Notify Slack Action

A minimal GitHub composite action that sends a Slack notification when a CI job fails.

Uses slackapi/slack-github-action@ under the hood with an incoming webhook.

Setup

1. Create a Slack App at api.slack.com/apps
2. Enable Incoming Webhooks and add one for your target channel
3. Store the webhook URL as a GitHub repo secret (e.g., SLACK_WEBHOOK_URL)

Usage

- name: Notify Slack on failure
  if: failure()
  uses: deepset-ai/notify-slack-action@v1
  with:
    slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL }}

Inputs

Input	Required	Default	Description
slack-webhook-url	Yes	-	Slack Incoming Webhook URL
mention-here	No	"true"	Whether to include @here in the notification

Message format

The notification includes:

• Repository name, workflow name, and branch
• @here mention (configurable)
• Link to the failed workflow run

License

Apache 2.0