Site Informant OpenAPI

Official OpenAPI specification for the Site Informant public JSON API —
a simple, developer-friendly interface for website uptime, response time, and SSL expiration data.

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📘 Overview

Site Informant provides affordable uptime and SSL monitoring for websites.
Our public JSON API lets developers, dashboards, and AI tools access live monitoring data for sites that have opted into public visibility.

• Base URL: https://api.siteinformant.com/api/public/
• Docs: https://siteinformant.com/Developers
• OpenAPI Spec: openapi-public.json

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🧠 Example

GET https://api.siteinformant.com/api/public/status/prudentdev.com

{
  "domain": "prudentdev.com",
  "uptimePercent": 99.89,
  "isOnline": true,
  "lastCheckUtc": "2025-11-04T07:45:00Z",
  "averageResponseMs": 238,
  "sslExpiresUtc": "2026-01-04T00:00:00Z",
  "sslIssuer": "Let's Encrypt"
}

💡 Use Cases

Build custom uptime dashboards or client portals

Integrate uptime data into AI agents or chatbots

Automate alerts and reporting pipelines

Enhance DevOps observability systems

🛠️ Rate Limits

60 requests / minute

Returns HTTP 429 with Retry-After header when exceeded

Please cache results responsibly (status endpoints ~60s TTL)

⚙️ Schema

The openapi-public.json file defines:

/status/{domain} — site uptime & SSL data

/plans — current pricing tiers

/example — sample payload for crawlers/tests

You can import this file directly into Postman, Swagger UI, or any OpenAPI-compatible SDK generator.

🔗 Related Resources

Blog announcement: Free Website Uptime API – JSON for Developers and AI Integrations

Dev.to post: dev.to/saganmarketing

Medium article: medium.com/@saganmarketing.com