Installation 

System requirements 

  • PHP 8.2+ (subject to the selected TYPO3 version's PHP requirements).
  • TYPO3 CMS 13.4 or 14.3+.
  • Composer-based TYPO3 installation (required for the Block Kit library).
  • agencelex/notifications version 1.5+.
  • Outbound HTTPS connectivity to the selected Slack endpoint.

Install with Composer 

From the TYPO3 project root, run:

composer require agencelex/notifications-slack:^1.0
vendor/bin/typo3 cache:flush
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Configure Slack 

Choose at least one transport:

Incoming Webhook
Create/configure a Slack app, enable Incoming Webhooks, and add a webhook to the intended conversation. Save the complete HTTPS URL as a secret. A webhook is tied to its configured destination.
Slack Web API
Install a Slack app with the required chat:write permission. Obtain its Bot Token and select the target conversation ID. Ensure the bot is permitted to post in the conversation.

Follow Configuration to register these credentials and Quick start to send a notification.