Every monitor type, one flat price
Halvyn watches your websites, APIs, databases, scheduled jobs and network in one place, opens a single incident per outage and keeps escalating until someone responds.
Monitor types
Website and API uptime monitoring
Monitor websites and REST APIs: status codes, response time, keyword and JSON checks, SSL certificate expiry and redirect hijacks. Free plan, no credit card.
Domain expiry monitoring
Get warned before your domain registration expires. Halvyn reads the registry over RDAP — no WHOIS parsing — and alerts days ahead.
Cron job and heartbeat monitoring
Know when a cron job, backup or queue worker silently stops. Your job pings a unique URL; Halvyn alerts when the ping is late.
Database monitoring
Monitor PostgreSQL, MySQL, SQL Server, Redis and MongoDB: connectivity, a custom health query, connection usage and replication lag.
Synthetic browser monitoring
Run multi-step browser checks in a real Chromium: open a page, click, type and assert, so login and checkout flows are tested end to end.
TCP port monitoring
Check that any TCP service accepts connections — SMTP, SSH, custom protocols — with optional send/expect and response-time thresholds.
UDP service monitoring
Monitor UDP services by sending a probe packet and checking the reply — useful for DNS, VoIP, game servers and custom protocols.
Ping (ICMP) monitoring
Ping servers and network devices: packet loss, round-trip time and degraded thresholds, with alerts when a host goes dark.
DNS record monitoring
Watch A, AAAA, CNAME, MX, TXT and NS records and get alerted when they change or stop resolving — against any public resolver.
Mobile app health monitoring
Track iOS and Android app health from in-app beacons: crash-free rate over a rolling window, with alerts when it drops.
Incident response built in
One incident per outage
Repeated failures roll into a single incident with a timeline, instead of a flood of duplicate alerts.
Blip recheck
A failed check is re-run within the same cycle before it counts, and an incident opens only after consecutive failures — a single network blip never pages anyone.
Escalation until acknowledged
Email, Slack, Microsoft Teams, Discord, Google Chat, webhooks, SMS, voice calls and on-call rotations — with one-click acknowledge links in every alert.
Incident management
Investigating → identified → monitoring → resolved states, assignees, comments, SLA timers per severity and postmortems.
Public status pages
Uptime bars, live incidents and manual updates on a page you can put on your own domain.
Maintenance windows
Checks keep running during planned work but alerts stay quiet, so your history stays complete.
SLOs and monthly SLA reports
Track objectives per monitor and email an uptime report to owners every month.
Flat pricing
Every check type on every paid plan, one price per plan — no per-host, per-check or per-feature metering.
Frequently asked questions
- Do I need to install an agent?
- No. Halvyn runs checks remotely. Heartbeats and mobile beacons are inbound — your job or app calls a URL — so there is nothing to deploy on your servers.
- Are all monitor types on every plan?
- Yes. Every plan, including the free plan, can use every monitor type; plans differ in how many monitors, how often they run and how long history is kept.
Start monitoring in five minutes
Free forever plan. No credit card. Every monitor type included.
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