# How do I know when my Vercel app is down?

> Vercel does not page you when your app breaks. Add an error and heartbeat reporter plus an on-call service. With Pagerless, one Next.js instrumentation file reports errors and 5xx per route; a 5xx burst or silence wakes you, and you can roll back to the previous deployment with one tap.

URL: https://pagerless.dev/answers/know-when-vercel-app-is-down
Updated: 2026-10-22

Setup: [Next.js on Vercel](https://pagerless.dev/integrations/nextjs-vercel).

## Questions

### How do I know when my Vercel app is down?

Vercel does not page you when your app breaks. Add an error and heartbeat reporter plus an on-call service. With Pagerless, one Next.js instrumentation file reports errors and 5xx per route; a 5xx burst or silence wakes you, and you can roll back to the previous deployment with one tap.