🚀 I Built a Lightweight Uptime & API Monitoring Tool Because Nothing Felt Simple Enough

Casper Nielsen — Sun, 30 Nov 2025 18:18:27 +0000

I’m Casper — product & engineering from Denmark —, and for the last months I’ve been building a super small tool to solve a problem that kept coming up in my own projects.

Some of my side projects needed basic uptime checks, but everything I tried felt heavier than the problem required:
• too many features
• dashboards packed with stuff I didn’t need
• enterprise-style UX
• complicated onboarding
• pricing that felt out of place for a simple monitor

I just wanted something that answered one question:

“Is my site or API up right now?”

So I built the tool I wish existed:
Web-Alert.io — a clean, minimal uptime & API monitoring service designed for indie hackers, small projects, and anyone who wants fast, simple checks.

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🟣 What Web-alert.io Does
• Monitor websites + API endpoints
• Send email alerts the moment something breaks
• Track response times
• Check SSL certificate status
• Show uptime history in a simple dashboard
• Set up monitors in under 60 seconds

This isn’t meant to compete with enterprise tools — it’s meant to be lightweight, fast, and easy to understand.

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💡 Why I Built It

Because almost every uptime tool I tried made me feel like I was entering a cockpit when all I needed was a light that turns red when something is wrong.

I wanted:
• simple setup
• clean UI
• predictable alerts
• a fair free plan
• and no noise

Eventually I realized the simplest way forward was to just build it myself.

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🧪 What I’m Looking for

The project is live, but very early.
If you check it out, I’d love feedback on:
• onboarding
• clarity
• UX flow
• what feels confusing
• what features you’d actually want
• anything that’s missing or feels unnecessary

This kind of early feedback is insanely helpful.

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🔗 Try it here

👉 https://web-alert.io

There’s a free plan with up to 5 monitors — no credit card needed.

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🙌 Thanks!

If you’ve built something similar or have ideas from your own uptime/monitoring experience, I’d love to hear what you learned.
Happy to answer questions about the build, architecture, UX decisions, or anything else.

— Casper

Forem: Casper Nielsen

🚀 I Built a Lightweight Uptime & API Monitoring Tool Because Nothing Felt Simple Enough