Reliable API & endpoint uptime for modern SaaS.
Stop relying on basic homepage pingers. Monitor REST APIs, JSON health endpoints, SSL certificates, and background workers from 5 global regions — with zero false alarms at 3 AM.
HTTP 200 on your homepage doesn't mean your SaaS is working.
Your SaaS architecture depends on APIs, background queues, webhooks, and third-party integrations. When an API endpoint degrades or an SSL certificate expires on your webhook subdomain, your customers feel the outage long before a naive homepage pinger notices.
- Traditional homepage pingers return HTTP 200 even while your database read-replica is dead or your API latency spikes to 8 seconds.
- Single-location uptime checkers flood your Slack with false alarms every time a regional routing blip occurs at 3 AM.
- Silent background worker failures go unnoticed until a customer emails saying their export job never arrived.
- Heavy APM suites cost thousands of dollars per month and require complex SDK instrumentation just to verify endpoint reachability.
Designed for SaaS engineering workflows
Everything you need to monitor complex API architectures without heavy agent overhead.
Monitor APIs & Health Endpoints
Assert exact HTTP status codes, JSON response keys, and p95 latency thresholds across microservices and public APIs.
5-Region Global Verification
Simultaneous checks from North America, Europe, and Asia eliminate single-location false positives.
Route Alerts Where Engineering Lives
Direct integrations with PagerDuty, Slack, Teams, and Webhooks ensure the right on-call engineer sees the issue immediately.
Customer-Facing Status Pages
Host status.yoursaas.com on your own domain to build trust and deflect incoming support tickets during incidents.
Relen vs. Basic Pingers & APM Suites
Why SaaS CTOs and lead engineers switch to Relen.
| Capability | Relen | Basic Uptime Pingers | Heavy APM Suites |
|---|---|---|---|
| JSON body & health endpoint assertions | |||
| Multi-region consensus before alerting | Varies | ||
| Cron job & background worker heartbeats | Paid Add-on | ||
| Hosted custom-domain status pages | Paid Add-on | ||
| Unlimited team seats & role access | Limited | Per-seat fee | |
| Setup time required | < 2 mins | 2 mins | Days / SDK install |
SaaS uptime monitoring — common questions
- Can Relen monitor authenticated API endpoints or inspect JSON payloads?
- Yes. You can configure custom HTTP headers (including Authorization bearer tokens), custom HTTP request methods, and validate specific JSON fields in the response body (e.g., status === "healthy" or queue_depth < 100).
- How does Relen prevent false positive alerts during transient network blips?
- Relen checks your endpoints every 30–60 seconds from 5 global regions simultaneously. Before triggering an incident or paging your on-call team, failures must be verified across multiple independent geographic locations.
- Can we integrate Relen alerts with PagerDuty and our internal Slack channels?
- Absolutely. Relen supports 9 native alerting channels including PagerDuty, Slack, Microsoft Teams, Discord, Webhooks, SMS, and Email. You can route severity-critical API alerts to PagerDuty while sending SSL warnings to Slack.
- Can we publish a public or private status page for our SaaS customers?
- Yes. Every Relen account includes custom domain status pages (e.g., status.yoursaas.com) with incident histories, subscriber email updates, and optional password protection for internal engineering views.
- Does Relen monitor background workers or scheduled cron jobs?
- Yes. Relen provides Heartbeat / Cron Job monitors. Your background worker or scheduled task pings a dedicated Relen webhook URL when it completes, and Relen alerts you immediately if a job fails to report in within its expected window.
Monitor your SaaS endpoints free for 12 days
Set up API assertions, cron heartbeats, and status pages in under two minutes. No credit card required.