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.

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.

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:
