# AI Site Health Checker

> A free tool that audits any website for AI-agent readiness — how well crawlers, AI answer engines, and autonomous agents can read, discover, and navigate it.

## Key pages

- [Home / run an audit](/): Paste a URL to get a graded readiness report.
- [Grade A demo](/demos/grade-a.html): A fully agent-ready sample page.
- [Grade B demo](/demos/grade-b.html): A strong page missing structured data.
- [Grade C demo](/demos/grade-c.html): A basic page with thin metadata.
- [Grade D demo](/demos/grade-d.html): A minimal, non-semantic page.
- [Grade F demo](/demos/grade-f.html): An empty client-rendered shell.

## What we check

- Readable: content in raw HTML, semantic structure, titles, links, robots.txt.
- Discoverable (AEO): JSON-LD structured data, meta description, Open Graph, depth.
- Navigable (A2A): llms.txt, an Agent Card, and explicit AI-bot rules.