How to see logs and know when your app is down.

The short answer

Open your app in the Antideploy console and go to its Logs tab to see what it printed. Or ask your connected coding agent: "show me the last 100 log lines" or "is my app up?". You also get an email when an app goes down, and another when it is back. Logs, metrics, health checks and the emails are in every plan, including Free.

If your agent is not connected yet, paste this first: Set this project up to deploy on Antideploy. Fetch https://antideploy.com/agent.md and follow it.

What you can see

• Logs. What your running app printed, recent lines, newest last. 100 lines by default and up to 300 in one request.
• Metrics. Requests, server errors and their rate, median and 95th percentile response times, and requests per day. They cover up to 30 days, 7 by default. Requests include bots and every asset on a page, so they are not a count of visitors.
• Health. Healthy, degraded, down or unknown, with the time it was last checked.
• Deploy history. Every deploy, the commit it built and, if it failed, why.
• Emails. When an app goes down, when it recovers, and when a deploy fails.

What the states mean

healthy    running, or asleep until the next visit
degraded   running again, but it crashed in the last 15 minutes
down       it stopped by itself, on two checks in a row
unknown    we could not check just now

Antideploy checks every live app about every five minutes. An app counts as down only after two checks in a row, so one bad moment does not turn a badge red or send you an email. An app that is asleep is healthy, because the next visit starts it.

What it does not do

• Health looks at whether the app is running, crashing or out of memory. It does not load your pages, so a running app that serves errors shows up in the metrics and logs
• Logs are recent lines, not an archive. Send them to a service of your own if you need to keep them
• There are no CPU or memory charts and no alert rules. The only alerts are the down, recovered and deploy-failed emails