HameSlack

This plugin integrates Slack and WordPress.

Core Conception

By default, this plugin does nothing. It’s true.
Slack has many API integration, but hameslack uses 2 of them.

• Incoming Webhook to post to slack.
• Slack App to interact with slack.

Upper is easier. This plugin helps the connection between Slack and WordPress and you can concentrate on what you should do with slack.

Use Cases

Here is a list of use case of us on WordPress with many editors.

• Easy Post notification to slack if some post is awaiting review.
• Difficult Post access summary to slack once a week, because my colleague doesn’t open Google Analytics.
• Very Difficult Convert slack conversation to single post and make interview post.

For more details, please read the Addons documentation.

How to Integrate

The simplest usage is post to slack. You can do like below:

do_action( 'hameslack', $text_to_post, $attachments, $channel );

Function hameslack_post( $content, $attachment, $channel ) is also available, but I prefer to use do_action to avoid annoying if ( function_exists('func_name')).

Everything works fine if you set properly.

Deprecated API

• Sending Invitation deprecated at 2.0: this endpoint was unofficial and official one is only for Enterprise grid. Users now can send invitation reqeust from their profile page.
• Outgoind Webhook deprecated at 2.0: Slack recommends Events API instead.

Install

From Plugin Repository

Click install and activate it.

From GitHub

Download from Releases and you can use it. Any pull requests are welcomed.

Enter Credentials

To post a message to slack, you need Payload URL. Create an app and activate “Incoming Webhooks”.
Now you can get payload URL.

To get Bot Token, go to “OAuth & Permissions”. By installing your app to your workspace, Bot token will be generated.

Do something

As mentioned above, this plugin does nothing by default. Enable built-in addons from the settings page, or read the Addons documentation to write your own.

If you have any request, please make issue on github.

Development

This plugin requires custom code to work with your Slack workspace. Here’s how to set up a local development environment.

Prerequisites

• Node.js >= 22 (managed via Volta)
• Docker Desktop (for wp-env)
• cloudflared (for Slack Webhook testing)

Getting Started

Install dependencies
npm install
composer install
Start WordPress local environment
npm start
Build assets
npm run package
Watch for changes during development
npm run watch

Receiving Slack Webhooks Locally

Slack requires a public HTTPS URL for Event Subscriptions and Interactive Components. Use Cloudflare Tunnel to expose your local environment:

In a separate terminal, start the tunnel
npm run tunnel

This gives you a temporary public URL like https://random-name.trycloudflare.com. Then:

1. Go to your Slack App settings
2. Update Event Subscriptions Request URL to https://random-name.trycloudflare.com/wp-json/hameslack/v1/...
3. Update Interactivity & Shortcuts Request URL similarly
4. The URL changes each time you restart the tunnel

Note: Make sure WordPress permalink settings are not set to “Plain” — pretty permalinks are required for /wp-json/ to work through the tunnel.

NPM Scripts

Command
Description

npm start
Start wp-env

npm run package
Build all assets (CSS + JS)

npm run watch
Watch for file changes

npm run tunnel
Open Cloudflare Tunnel to localhost:8888

npm run lint
Run ESLint + Stylelint

npm run fix
Auto-fix lint errors

npm test
Run PHPUnit tests