How to Get Notified When My Bolt App Crashes
Set up UptimeRobot (free) to monitor your deployed Bolt app URL (Netlify, Vercel, Bolt Cloud, or Cloudflare) and Sentry (free) for application crash alerts. Your hosting platform also provides deployment failure notifications — enable those for build and deploy errors. These three layers cover infrastructure downtime, application crashes, and deployment failures.
Why this matters
Bolt apps deploy to external hosting platforms, which means crashes can happen at multiple levels: the hosting infrastructure goes down, a deployment fails, or your application code throws errors. Each requires a different alert. Without crash notifications, you discover problems when users report them — or when they silently stop using your app.
What's at stake
Bolt makes it easy to deploy frequently, which means new bugs can reach production quickly. A broken deployment pushed on Friday evening without crash alerts means your app is down all weekend. Crash notifications turn hours of silent downtime into minutes of alerted response.
Step by step.
Set up UptimeRobot for your deployed URL
Create a free UptimeRobot account and add your deployed Bolt app URL — not the Bolt.new preview URL. Add your email and optionally Slack/Discord as alert contacts. Set checks to every 5 minutes. UptimeRobot will alert you if your hosting platform or app becomes unreachable.
Add Sentry for application crash alerts
Install Sentry in your Bolt app to catch JavaScript errors and application crashes. Configure alert rules to notify on first occurrence of new errors. This catches crashes that UptimeRobot misses — like a page that loads but has broken functionality or a failed payment flow.
Enable hosting platform notifications
Configure your hosting platform to alert you on deployment failures. Netlify, Vercel, and Cloudflare all offer email notifications for failed builds and deployments. Bolt Cloud shows build status in the dashboard. A failed deployment means your latest code did not go live.
Monitor Edge Functions separately
If your Bolt app uses Edge Functions for authentication, payments, or API proxying, these can fail without the main app going down. Check your hosting platform function logs for errors. Sentry can capture Edge Function errors if you add the Node.js SDK to your server-side code.
Set up escalation for critical paths
For your most critical features (payments, authentication), configure escalation: if an error occurs more than 5 times in 10 minutes, send an SMS or phone call alert. UptimeRobot Pro and Better Stack offer SMS alerting. For free alternatives, use Slack with push notifications on your phone.
Get alerted the moment your Bolt app has a problem
- Multi-layer crash detection covering hosting, application, and Edge Functions
- Deployment failure alerts so you know when a build breaks
- Instant notifications keeping you informed before users notice
Frequently asked questions.
Bolt shows build status in the dashboard, but it does not monitor your deployed app for crashes. Once deployed, your app runs on the hosting platform (Netlify, Vercel, Bolt Cloud), and monitoring is your responsibility. Use UptimeRobot and Sentry for comprehensive crash alerts.
UptimeRobot detects this — if your Netlify/Vercel/Cloudflare site is unreachable, UptimeRobot alerts you. Check your hosting platform status page to confirm whether it is a platform outage or an app-specific issue. Platform outages usually resolve themselves; app issues require your intervention.
Compare the Sentry error timestamp with your deployment history. If new errors appear immediately after a deployment, the latest code changes are likely the cause. Sentry shows the first occurrence of each error, making it easy to correlate with deployments.
No. The preview URL runs in a WebContainer and behaves differently from your deployed app. Monitor your actual deployed URL — that is what your users access. The preview is for development, not production monitoring.