How to Monitor Your API for Free (And Actually Get Alerted)
Your API went down last night. You found out at 9am when a user emailed you. Sound familiar? Here's how to make sure that never happens again — for free.
Why Do Most Free API Monitoring Tools Fall Short?
Most free monitoring tiers have at least one catch. Either you only get 1 or 2 monitors (useless for a real project), alerts are locked behind a paywall, check intervals are too slow (10–30 minutes means your API could be down for half an hour before you know), or commercial use is restricted.
The good news: there are tools that get this right. Here's how to set up solid free monitoring in under 10 minutes.
How Do You Set Up Free API Monitoring?
Create a free account
Sign up at checkapi.io/register. No credit card required. Takes 30 seconds.
Add your first monitor
Click "Add Monitor" and enter:
- Your API URL (e.g. https://api.yourapp.com/health)
- Expected status code (usually 200)
- Check interval (5 minutes on free plan)
- A name to identify it
Set up an alert channel
Add your email for instant alerts. On the free plan, email alerts are included. You can also connect Slack, Telegram, or Discord — all supported on the free tier.
Test it
Use the "Test Alert" button to make sure you receive a notification. Better to find out it's misconfigured now than at 3am when your API is actually down.
What API Endpoints Should You Monitor?
At minimum, monitor these endpoints:
/health or /ping— Basic availability checkYour most critical API endpoint— Core functionalityYour login/auth endpoint— Users can't do anything without it
What Are the Best Tips for API Monitoring?
💡 Add a /health endpoint to your API
Return a simple {"status": "ok"} with a 200. This is the standard pattern and makes monitoring much cleaner.
💡 Monitor response time, not just status
An API that returns 200 but takes 8 seconds is effectively broken for your users. Set a response time threshold.
💡 Set up a public status page
Proactively share uptime with your users so they can check before emailing you.