A plaintext secret containing the URL of a Slack incoming webhook.
The webhook should be created through a Slack app, and only allows posting to one specific Slack channel.
See Slack's official documentation (e.g., https://api.slack.com/messaging/webhooks) for more details.
NOTE: Incoming webhooks created through legacy custom integrations in Slack are not supported.
A plaintext secret containing the URL of a Slack incoming webhook. The webhook should be created through a Slack app, and only allows posting to one specific Slack channel. See Slack's official documentation (e.g., https://api.slack.com/messaging/webhooks) for more details.
NOTE: Incoming webhooks created through legacy custom integrations in Slack are not supported.