SaaS Monitoring
Know when your users
can’t reach you.
Your infrastructure can look healthy while your app is unreachable. Sentinel monitors your app, APIs, and critical endpoints from fifteen regions around the world, so you see what your users experience.
Beyond uptime
Monitor what your users depend on.
Your app is more than a URL. Sentinel watches the endpoints, APIs, authentication, infrastructure, and integrations that have to work together for your users to get what they came for.
Start monitoring freeApplication endpoints
Monitor the critical parts of your app from fifteen global regions. Know when something becomes unavailable or slows down before your users start reporting it.
API health
Validate status codes, response times, and JSON responses to make sure your APIs aren’t just responding, but returning what you expect.
Login & authentication
Monitor login pages, OAuth callbacks, and SSO endpoints for availability. If users can’t get in, nothing else matters.
SSL certificates
Stay ahead of expired or invalid certificates that can block users from reaching your product.
DNS & custom domains
Watch the DNS records your app and customer domains depend on, and know when something changes.
Webhooks
Monitor critical webhook endpoints and catch availability problems before a broken integration becomes a support ticket.
Built for SaaS
Reliability is part of your product.
Your users don’t separate your features from your uptime. Every slow response, failed request, and outage is part of their experience with your product. Sentinel helps you find and fix issues before they become reasons to leave.
fifteen-region monitoring
See the outage your server can’t.
Your infrastructure can look perfectly healthy while users can’t reach it. Sentinel checks continuously from fifteen regions outside your network.
fast, reliable alerts
Know when it matters.
Multi-region confirmation filters out isolated failures and false alarms, so your team can act confidently when Sentinel alerts.
response-time monitoring
Catch slow before it becomes down.
Track performance over time and spot degradation before a sluggish product becomes an unavailable one.
incident history
Learn from every incident.
See what happened, when it started, how long it lasted, and how your service recovered, with a history your team can actually use.
FAQ
Fair questions.
Straight answers about monitoring your SaaS with Sentinel.
Can Sentinel monitor my APIs and health endpoints?
Yes. Monitor application, API, and health-check endpoints from fifteen global regions. Depending on your plan, Sentinel can check as often as every 15 seconds.
Can Sentinel verify an API is actually working, not just returning 200?
Yes. JSON assertions can validate specific fields and values in the response, so an endpoint that returns 200 while reporting a degraded or incorrect state can still trigger an alert.
How does Sentinel avoid false alarms?
Every uptime check runs from fifteen global regions. Sentinel confirms an outage across regions before opening an incident, helping filter out false positives caused by an isolated network or regional issue.
Can Sentinel monitor SSL, DNS, and domains too?
Yes. Monitor SSL certificate validity and expiration, DNS records, and domain expiration alongside your application endpoints.
How will my team know when something goes wrong?
Send alerts through email, SMS, Slack, Discord, Microsoft Teams, Telegram, PagerDuty, or webhooks, so incidents reach the tools your team already uses.
Can Sentinel monitor background jobs and cron jobs?
Yes. Heartbeat monitoring lets Sentinel watch scheduled jobs, workers, backups, and other processes that should check in on a regular schedule. If a heartbeat doesn’t arrive when expected, you’ll know.
Can we manage Sentinel as code?
Yes. Sentinel provides an API, CLI, and Terraform provider, so monitoring can live alongside the rest of your infrastructure and deployment workflow.
Is there a free plan?
Yes. You can start on the free plan without a credit card. Paid plans include a 14-day trial and additional monitors, faster checks, and more features.
See what they see
Know your SaaS is there when users need it.
Monitor your app, APIs, and critical endpoints from fifteen regions around the world, and know what your users experience beyond your own infrastructure.