Slack


Calibre has a built-in Slack integration that allows to receive notifications when a Snapshot is created or a performance budget changes status. This article covers how to route Calibre notifications to a selected Slack channel.

Set-up instructions#

1. Create an incoming webhook#

Create a new Incoming Webhook in Slack and copy its URL.

Slack Incoming Webhook Form

2. Add Slack integration to Calibre#

To connect a Site in Calibre to a Slack workspace, navigate to Site → Synthetic → Settings → Integrations and paste the previously copied URL. Next up, choose from the following types of alerts:

  • Snapshot notifications: sent when a new Snapshot is completed.
  • Budget notifications: sent when a metric Budget is exceeded, met or at risk.

Once you've chosen the relevant notifications, click the Save button.

Enabling Slack integration in Calibre

3. View Slack notifications#

That's it - notifications will appear in the selected Slack channel. Here's an example notification we set up for Calibre:

Slack notification for a Snapshot and Budget for Time to Interactive

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