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DIY Uptime Alert Generator

The privacy-respecting alternative to BetterStack / Pingdom / DataDog. Generates uptime + alert configurations for Netlify deploy notifications, Vercel webhooks, Cloudflare Workers, GitHub Actions cron, plain shell + cron + mailx, and self-hosted Uptime Kuma — pick the stacks you actually run, get drop-in configs.

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Context and background

Read the story behind this tool: ISP surveillance + DIY monitoring →

Inputs

URL to monitor Alert email (where to send notifications) Slack webhook URL (optional) Check interval (minutes) Stacks to generate for (toggle on the ones you use)

Netlify

Deploy + form notifications via UI + outgoing webhook config snippet

Vercel

Deployment notification + webhook for deployment.failed events

Cloudflare Workers

Worker that pings the URL on cron + emails on failure via MailChannels

GitHub Actions

Workflow on cron schedule that curls the URL + creates issue on failure

Plain shell + cron

Bash script + crontab line + mailx alert (Linux/macOS VPS)

Uptime Kuma (Docker)

Self-hosted dashboard with web UI on a $5/mo VPS

ntfy.sh push

Free push-notification service compatible with shell curl + Uptime Kuma

Gatus (YAML uptime)

Lightweight YAML-configured monitor. 1-file config, Prometheus metrics export, Docker native.

Prometheus + Alertmanager

Industry-standard metrics + alerting. Blackbox exporter for HTTP probes, Alertmanager for routing.

Healthchecks (self-hosted)

Push-based dead-man's switch. For cron jobs that must keep running — alert when they STOP pinging.

Monit (classic Unix)

Single-binary process + HTTP watcher. 30-year track record, tiny footprint, zero dependencies.

Heads up: Configs are starter templates — verify pricing tiers + rate limits + DNS requirements (e.g., MailChannels SPF for Cloudflare Workers email) on each platform before depending on them. The shell+cron + Uptime Kuma options provide the strongest privacy posture (no third party in the data path). Mentions of Netlify, Vercel, Cloudflare, GitHub, MailChannels, ntfy.sh, Uptime Kuma, BetterStack, Pingdom, DataDog are nominative fair use.