Sigabrt.dev

What it does

Sigabrt monitors whether periodic tasks complete on schedule. A user adds a curl command to the end of a script or cronjob that pings an endpoint if the task succeeds. If the ping does not arrive within an expected window plus a grace period, the service sends an email or ntfy alert. It tracks pulse history and status changes, and offers an experimental SSH terminal interface to view all monitored endpoints and their recent events.

Who it is for

This targets people who self-host infrastructure and need to know when their scripts fail silently. The setup requires only a curl command appended to existing jobs, so it suits developers comfortable with cron and shell scripts. Small teams or solo operators with a handful of background tasks are the primary audience.

Pricing

One job monitored free forever with no card required. The Pro tier at €15 per month unlocks unlimited jobs, checks as frequent as one minute, and 90 days of history retention.

How it stands out

The service uses a "dead man's switch" model: silence is good, and alerts only fire when something is missing. This inverts the typical monitoring paradigm and reduces alert fatigue for simple use cases. The SSH terminal interface, while experimental, provides a read-only dashboard without leaving the command line. The setup is minimal—just a single curl call—and requires no agent installation, credentials, or configuration changes to existing systems.

What a founder should check

First, understand the competitive landscape around cron monitoring and uptime checking. Competitors like Healthchecks.io, UptimerRobot, and Cronitor already own significant market share in this space; verify what specific pain points or use cases sigabrt actually solves better. Second, examine switching costs and lock-in. Since the integration is a single curl line, customers face low friction to migrate elsewhere, which pressures margins and retention. Third, assess the moat. The core feature—pinging and alerting—is straightforward to replicate. The SSH TUI is acknowledged as experimental and uncertain in value, so clarify whether that becomes a differentiator or remains a gimmick. Validate whether the free tier (one job) drives enough conversions to paid to sustain the business.