Know when your API goes down — before your users do
Monitor any API endpoint every minute. Get an instant SMS via Twilio the moment it fails or times out, with smart escalation and retry logic built in.
Start Monitoring — $12/moCancel anytime. No credit card required to try.
⚡
60-second checks
Endpoints polled every minute around the clock.
📱
Instant SMS
Twilio-powered alerts reach you in seconds.
🔁
Escalation rules
Retry logic and multi-contact escalation built in.
Pro Plan
$12
per month
- ✓Up to 20 monitored endpoints
- ✓60-second check intervals
- ✓Unlimited SMS alerts via Twilio
- ✓Escalation rules & retry logic
- ✓Maintenance window support
- ✓Email + SMS notifications
Frequently Asked Questions
How quickly will I get alerted?
Endpoints are checked every 60 seconds. You receive an SMS within seconds of a failure being detected.
What counts as a failure?
Any non-2xx HTTP response, a timeout over 10 seconds, or a DNS/connection error triggers an alert.
Can I silence alerts during maintenance?
Yes. You can pause monitoring for any endpoint or set a maintenance window to suppress alerts.
© 2026 API SMS Alerter. Built for developers who care about uptime.