Slack alerts that page you

Connect Slack

Open the admin dashboard → your project → Alert settings. Paste a Slack Incoming Webhook URL. If left empty, the worker falls back to the process env SLACK_WEBHOOK_URL (useful for self-host).

Error-rate alerts

Fire when the rolling error rate exceeds your threshold over a window. Defaults: 25% over 5 minutes with at least 10 traces in the window.

error rate >= 0.25
window = 5 minutes
min traces = 10
cooldown = 30 minutes

Cost-spike alerts

Fire when spend in the last hour is at least a minimum USD amount and ≥ N× the previous hour — catch retry loops before they burn budget. Defaults: $1 minimum, 2× ratio.

hourly cost >= $1
and current_hour / previous_hour >= 2
cooldown = 30 minutes

What gets posted

Slack messages include the project name and a short metric summary (error rate or hourly spend). Open the project dashboard for recent traces and alert history.