Slack Integration

Slack Integration

Connect Sentinel to your Slack workspace and alerts about downtime, recoveries, certificates, and every other check land in the channels your team already watches.

Connect with the official app (recommended)

1. Open Integrations in your dashboard
2. Click Add to Slack in the Slack channels section
3. On Slack's consent screen, pick the channel alerts should post to
4. You land back in Sentinel with the channel connected. Click Test to prove the wiring

The app asks for a single permission: posting messages to the channel you picked. It cannot read messages or see anything else in your workspace.

Multiple channels

Install the app once per channel to route alerts wherever they belong: a shared alerts feed, a channel per client, a quiet channel for recoveries. Each connected channel has its own severity checkboxes on the Integrations page, so one channel can carry outages only while another hears everything.

Severity routing

• Outages: site down, unreachable, certificate invalid or expired
• Warnings: certificate expiring, slow responses, failed keyword checks
• Recoveries: back online, incident resolved, DNS changes

A monitor's own notification settings are respected too: a monitor that routes a severity away from Slack stays out of every connected channel for that severity.

Pasting a webhook instead

Prefer to manage your own Slack app? You can still create an incoming webhook in your workspace and paste its URL into your profile's notification settings. This path is personal to your account and keeps working alongside any connected channels; just avoid pointing both at the same channel, or it will hear every alert twice.

What gets posted

• Monitor downtime and recovery, with the failure reason and detecting region
• SSL certificate expiration warnings and validity failures
• DNS record change alerts
• Keyword and JSON assertion failures
• Missed heartbeats and cron jobs
• Slow response and domain expiration warnings