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The Monitoring tool answers three questions about your published app: is it up, how is it behaving, and what is it using? Open Monitoring under Replit Cloud in the Tools pane. Monitoring starts once your app is published. Before that, the tool shows a No deployment yet message.
Looking for visitor and user insights? They’ve moved to the Growth pane.

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Application monitoring

Application monitoring shows how your app is behaving from your visitors’ point of view. Pick a time range at the top to zoom in or out.
Application monitoring view showing uptime monitoring, a requests chart with unique IP addresses, HTTP statuses, and request durations
  • Uptime Monitoring: Shows the percentage of time your app was online, with a colored bar for recent history. Replit checks your app on a regular schedule and emails you if it goes down.
  • Requests: How much traffic your app is serving over time, along with the number of unique IP addresses reaching it.
  • HTTP Statuses: How your app answered recent requests. Successful responses are healthy; a spike of errors is a sign to investigate. Paste an error spike’s timeframe into Agent chat and ask it to check the logs.
  • Request Durations: How long your app takes to respond, grouped into buckets. If most requests land in the slowest buckets, your app may need attention or a more powerful machine.

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Turn on uptime monitoring

Uptime checks are controlled from the publish settings.
1

Open the publish settings

Open the Publishing tool and start a new publish or republish your app.
2

Enable the toggle

Under Monitoring tools, switch on Enable app monitoring, then publish your app.
3

View your uptime

After publishing, your uptime appears in the Monitoring tool within a few minutes.
Uptime monitoring is available on Replit Core, Pro, and Enterprise plans. It works for all deployment types except Scheduled Deployments, which don’t serve a web page.

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Infrastructure monitoring

Infrastructure monitoring shows what your app is consuming behind the scenes.
Infrastructure monitoring view showing CPU utilization and memory utilization charts over the past hour
  • CPU Utilization: How much processing power your app is using.
  • Memory Utilization: How much memory your app is using.
Occasional spikes are normal. If either chart stays consistently high, your app may respond slowly under load. Consider a more powerful machine configuration.

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Logs

Logs show what your app is doing in real time, including errors and messages your app prints while it runs. Replit retains logs for 7 days. You can narrow down the logs with the following filters:
  • Errors only: View only error logs.
  • Search: Enter a phrase to find in the logs.
  • Date: Select a date range.
If something looks wrong in your app, you don’t need to read logs yourself. Ask Agent to investigate, and it reads the logs for you.

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Next steps