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The Slack webhook based alert channel is deprecated in favour of the more modern Slack App alert channel
Sends alert notifications to a Slack channel via an incoming webhook.
If you need to reference existing alert channels that were created outside of your CLI project, use fromId().

Configuration

Slack Alert Channel Options

URL
required
The Slack incoming webhook URL where Checkly will send alert notifications.
string
Target Slack channel or user for notifications. You can specify the target channel to override the default channel configured in the webhook.

General Alert Channel Options

These options are valid for all alert channels types.
boolean
Whether to send notifications when checks recover from a failed or degraded state. Default value is true.
boolean
Whether to send notifications when checks fail. Default value is true.
boolean
Whether to send notifications when checks become degraded. Default value is false.
boolean
Whether to send notifications when a SSL/TLS certificate is about to expire. Default value is false.
Learn more about SSL alerts.
number
Number of days before the SSL/TLS certificate expiry date to send notifications. Only relevant when sslExpiry is enabled. Default value is 30.
Learn more about SSL alerts.