slack-webhook-send-message

confluence_page_id	1039401058
title	Slack webhook send message

Slack webhook send message

Send a message to a Slack channel using a Slack incoming webhook.

The action retries rate-limited requests and transient Slack server errors up to three times. Rate-limited requests honor Slack's Retry-After header.

Webhook setup

Create an incoming webhook for the target Slack channel and store its URL as a GitHub Actions secret. Do not add the webhook URL to workflow files.

Usage

steps:
  - name: Send Slack message
    uses: Adyen/github-actions/slack-webhook-send-message@main
    with:
      webhook-url: ${{ secrets.SLACK_WEBHOOK_URL }}
      message: Deployment completed successfully.

Pin the action to a commit SHA instead of main in production workflows.

Inputs

Input	Required	Description
webhook-url	Yes	Slack incoming webhook URL.
message	Yes	Message text.