Xpiry.dev

Xpiry.dev started as the tool I used to make sure the SSL certificates across my portfolio of sites were renewing correctly. Then I added a way to check domains for their expiration dates. After that I just kept adding more, and over time it pulled in stripped-down versions of the tools I reach for most, like Sentry, Better Stack, and a few others. I took each one, cut it down to the smallest version that still gave me real value, and bolted it on. Somewhere along the way Xpiry.dev quietly turned into an all-in-one monitoring service that I really like using across all my projects. It watches everything from the SSL certificate, to the uptime of the home page, to whether my cron jobs are still running. It wraps all of that into one simple tool and notification service that just works for what I need.

It would be great to get some more feedback, but I'll be continuing with its development and use it for all of my personal projects!

Sean

Added an api to allow for easier bulk domain creation. Updated the ssl tracking to track certificate changes as they happen to spot issues before they become a problem.

Hey IH,

I just shipped Xpiry (https://xpiry.dev), a focused tool that watches your SSL certificates and domain registrations and pings you before anything expires.

Why I built it

Every developer I know has a story about an expired SSL cert taking down a site at the worst possible time - usually on a Friday night, usually noticed by a client before they noticed it themselves. Domain renewals are even scarier: miss one and you can lose the name entirely.

The existing options always frustrated me. Either they were giant observability suites (Datadog, UptimeRobot, etc.) where expiry monitoring was an afterthought buried under 50 other features, or they were enterprise tools charging enterprise prices for what should be a 30-second check. I wanted something focused. Point it at a domain. Get an alert before things break. Done.

What it does

- Monitors SSL certificate expiry, chain validity, and SANs

- Tracks domain registration expiry (RDAP + WHOIS)

- Alerts via email, Slack, and webhooks

- Configurable alert thresholds (30 days, 14 days, 7 days, 1 day…)

- Free tier with 1 domain — no credit card

Where I need help

1. Try it out and tell me what's confusing — https://xpiry.dev has a free SSL checker on the homepage if you just want to kick the tires before signing up.

2. What's your worst SSL/domain expiry horror story? I want to make sure Xpiry would have caught it.

3. Any feature you'd want from a tool like this that you've never seen elsewhere?

Brutal feedback welcome. This is a side project but I'd love for it to grow into something real.

— Reed