🚀 Launch Announcement
We’re excited to share that Site Informant — the affordable website uptime monitoring service — now provides a public JSON API for developers and AI tools.
With one simple GET request, you can pull live uptime, response-time, and SSL-certificate data for any site you monitor (or any site that’s opted-in for public visibility).
GET https://api.siteinformant.com/api/public/status/prudentdev.com
💡 Example response
{
"domain": "prudentdev.com",
"uptimePercent": 100,
"isOnline": true,
"lastCheckUtc": "2025-11-04T07:45:00Z",
"averageResponseMs": 238,
"sslExpiresUtc": "2026-01-04T00:00:00Z",
"sslIssuer": "Let's Encrypt"
}
🧠 Why it matters
No API key required
Perfect for dashboards, chatbots, and AI monitoring agents
Data available for any public site you manage through Site Informant
OpenAPI spec for instant integration
🛠️ For developers
Check out our full Developers page
with C# and curl examples, rate-limit info, and integration notes.
🌐 Try it free
Monitor one site free, and add more for only $1/month per 5 sites.
Start here → https://siteinformant.com
Originally published on siteinformant.com/blog/free-website-uptime-api
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