# GitHub Star Alerts in Slack

Source: https://openflow.run/en/templates/github-star-slack-alert/
Content language: en
Template revision: f2bf5895d91486412f320151dafd9c6b95b42091

Development

Post Slack alerts when a repository gains or loses a GitHub star.

[Use in Open Flow](https://console.openflow.run/flows?importUrl=https%3A%2F%2Fraw.githubusercontent.com%2Foomol-lab%2Fawesome-workflow-templates%2Ff2bf5895d91486412f320151dafd9c6b95b42091%2Fworkflows%2Fgithub-star-slack-alert%2Ftemplates%2Fgithub-star-slack-alert.openflow.json)

*   [Open Flow JSON](https://raw.githubusercontent.com/oomol-lab/awesome-workflow-templates/f2bf5895d91486412f320151dafd9c6b95b42091/workflows/github-star-slack-alert/templates/github-star-slack-alert.openflow.json)
*   [n8n JSON](https://raw.githubusercontent.com/oomol-lab/awesome-workflow-templates/f2bf5895d91486412f320151dafd9c6b95b42091/workflows/github-star-slack-alert/templates/github-star-slack-alert.n8n.json)

![GitHub Star Alerts in Slack workflow in Open Flow](https://openflow.run/_astro/preview-light.BBxdfmKv_1Lol5v.webp)

Send Slack a notification when someone adds or removes a star from your repository.

## Setup

Connect GitHub in **Receive repository star event** and set the repository owner and name. The GitHub account must be able to manage that repository’s webhooks. Keep the subscribed event as `star`.

Connect Slack in both **Post added star to Slack** and **Post removed star to Slack**, and set their channel IDs. They can use the same channel or separate channels. The account must have permission to post there. In n8n, configure the equivalent **Github Trigger**, **Slack - Add**, and **Slack - Remove** nodes. Activate one format after setup.

Each `created` event sends one green attachment; each `deleted` event sends one red attachment. The message includes the sender’s GitHub login, profile link, avatar, and the repository star count from that event. The count is a snapshot from the webhook payload; the workflow does not query GitHub again or adjust the number itself.

The workflow keeps no notification history. Duplicate event deliveries or two active formats can produce repeated alerts. A malformed payload fails before Slack; a Slack error fails the run without an automatic retry.

## Changes to the source

*   Replace the original repository and Slack channels with setup placeholders.
*   Read the GitHub payload through the current node output instead of legacy `.data` expressions.
*   Validate the two star actions and required sender/count fields.
*   Add notification fallback text and escape dynamic Slack values while retaining the avatar, profile link, colors, and separate destinations.

Adapted from [GitHub star notifications](https://github.com/Zie619/n8n-workflows/blob/ae8cf6dc5b873cbb4f74587aa9180ed3a9f70682/workflows/Github/0973_GitHub_Slack_Create_Triggered.json) in [Zie619/n8n-workflows](https://github.com/Zie619/n8n-workflows). The source export does not identify a separate template author or license.

The collection’s [MIT notice](https://github.com/Zie619/n8n-workflows/blob/94007c1445d9258a7da116646b79473e7c7c3282/LICENSE) is pinned at a later revision. This is the collection notice at that revision; it does not establish a separate original template author’s license. Our changes are listed above; see [repository licensing](https://github.com/oomol-lab/awesome-workflow-templates/blob/f2bf5895d91486412f320151dafd9c6b95b42091/README.md#licensing).

> MIT License
> 
> Copyright (c) 2025 Zie619
> 
> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
> 
> The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
> 
> THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

## Apps used

*   [**GitHub**`github`](https://console.openflow.run/connections/github)
*   [**Slack**`slack`](https://console.openflow.run/connections/slack)

## What you’ll need

*   GitHub connection with permission to manage repository webhooks
*   Repository owner and name
*   Slack connection with chat:write access to the destination channels

*   github
*   slack
*   stars
*   notifications

[View on GitHub](https://github.com/oomol-lab/awesome-workflow-templates/blob/f2bf5895d91486412f320151dafd9c6b95b42091/workflows/github-star-slack-alert/README.md)