A monitor for what you are building, free

A handful of hosts, mostly on Free or Pro: an API you're building, a personal domain, a cron job that should not go quiet. hostnag mints a ping URL for the heartbeat and watches the rest from the cloud.

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The plan that fits: Free.

What Developers watch
What breaks	hostnag
A host goes downwebsite, API, VPN, mail, gateway	Yes
A certificate expiresdays-before thresholds, daily inside the last window	Yes
A domain lapsesregistration expiry from RDAP	Yes
A scheduled job stops runningcron, backups, workers: a heartbeat that goes quiet	Yes

How it is set up

01
Add the host
A URL for the app, or a host and port for anything else: a database, a game server, a personal domain.
02
Mint a ping URL for whatever runs on a schedule
A cron run or a backup: call the URL when it finishes, and silence past the deadline is the alert.
03
Get told by email, on the plan that costs nothing
Email alerts are included on every plan, including Free.
04
Watch the certificate and the domain too
The same host can carry a certificate monitor and a domain registration monitor, not just uptime.

The plan that fits

Monitors: 5
Groups: 1
Seats: 1
Locations: 1
Fastest interval: 5 min
Channels: Email
History: 30 days
Reports: none
Scoped viewers: No

Questions

Is there a plan with no cost to start?

Yes, the Free plan: enough monitors and one group for a handful of hosts, with email alerts included.

What happens when I outgrow the Free plan?

Move to a paid plan for more locations, more channels and longer history; nothing is deleted, monitors just keep running.

Features that matter

Uptime monitoringWebsites, APIs and anything that answers on a port, checked every minute from up to four places, with a failure confirmed before anyone is paged.Heartbeat monitoringA minted URL for anything that runs on its own schedule: a job that goes quiet becomes an alert, not a surprise weeks later.Certificate monitoringEvery certificate hostnag can reach is watched for expiry and a swapped chain; the ones it cannot reach get a URL to report to instead.Domain monitoringEvery domain's registration watched for lapsing, plus who holds the nameservers and whether DNSSEC is still switched on.

Add a host. Hear about it first.

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