Next.js API monitoring

How to monitor a Next.js API uptime

Monitoring a Next.js API means checking more than whether the deployment exists. A route can return 200 while auth, database calls, or upstream providers are broken. The practical path is to create one lightweight health endpoint, run it from outside your hosting provider, and publish the results on a status page users can trust.

Health route

Make one endpoint that proves the critical path works.

For an App Router project, create a small route handler such as /api/health that returns JSON only after the pieces your product depends on are reachable. Keep it fast and safe: no secrets in the response, no expensive writes, and no customer data. If your product depends on Postgres, include a tiny read query. If it depends on a queue or third-party API, check only the minimum signal needed to catch a real outage.

External check

Monitor from outside the Next.js runtime.

A cron job inside the same app is useful for internal jobs, but it is not enough for uptime monitoring. If Vercel routing, DNS, cold starts, or a deploy regression breaks the API, an external checker sees what customers see. Track status code, timeout, and response time. Treat repeated failures as downtime and record recovery when the endpoint responds again.

Public proof

Turn private checks into a support-saving status page.

The biggest benefit of monitoring is not the green dot; it is the public answer during an incident. A Next.js API uptime page gives users a single place to confirm whether the API is degraded, when the last check ran, and whether recovery has started. Start with your health endpoint as the free monitor, then add separate monitors for your app, docs, and webhook receiver as the product grows.