# AEO Checker — AI Engine Optimization Score Tool

## What is AEO Checker?
AEO Checker is a free tool that analyzes any website's visibility to AI agents (ChatGPT, Claude, Perplexity, Google AI). It provides an AEO Score out of 100 with actionable recommendations.

## What is AEO (AI Engine Optimization)?
AEO is the practice of optimizing websites so AI agents can discover, understand, and recommend them. It's the next evolution of SEO — instead of optimizing for search engine crawlers, you optimize for AI answer engines.

## How the AEO Score works
The checker runs 7 automated checks:
1. **Structured Data** (0-20pts) — JSON-LD schemas, OpenGraph tags, meta descriptions
2. **robots.txt AI Bots** (0-15pts) — Are GPTBot, ClaudeBot, PerplexityBot allowed?
3. **llms.txt** (0-15pts) — Does the site have an /llms.txt file for AI context?
4. **Content Structure** (0-20pts) — H1-H3 hierarchy, FAQPage schema, HowTo schema
5. **Tool/API Description** (0-15pts) — ai-plugin.json, OpenAPI spec, MCP hints
6. **Performance** (0-15pts) — Response time (AI agents timeout fast)
7. **Markdown for Agents** (0-10pts) — Accept: text/markdown content negotiation, /crawl endpoint, llms-full.txt

## Key URLs
- AEO Checker tool: https://aeo-checker-0tao.onrender.com/
- What is AEO? Guide: https://aeo-checker-0tao.onrender.com/blog-what-is-aeo.html
- AEO Optimization Guide: https://aeo-checker-0tao.onrender.com/blog-aeo-optimization-guide.html
- AEO vs SEO Comparison: https://aeo-checker-0tao.onrender.com/blog-aeo-vs-seo.html
- Why Sites Are Invisible to AI: https://aeo-checker-0tao.onrender.com/blog-website-invisible-to-ai.html
- Stripe Agent Commerce + AEO: https://aeo-checker-0tao.onrender.com/blog-stripe-agent-commerce-aeo.html

## API
POST /api/check with JSON body { "url": "https://example.com" } to get an AEO score.
GET /api/badge/:score to get an embeddable SVG badge.

## Who it's for
- Website owners who want AI agents to recommend their content
- SEO professionals expanding into AI optimization
- SaaS companies that want to be discovered by AI-powered search
- Content creators aiming for AI answer engine citations

- [20 Tech Giants AEO Scores (2026)](https://aeo-checker-0tao.onrender.com/blog-top20-aeo-scores-2026.html): Full AEO audit of 20 major tech companies. Rankings, per-check analysis, key insights.
- [AEO Audit Checklist: 20 Things to Check](https://aeo-checker-0tao.onrender.com/blog-aeo-audit-checklist.html): Printable 20-item yes/no checklist across 7 AEO categories with impact levels.
- [The Agent Economy — 5 Things Businesses Must Do](https://aeo-checker-0tao.onrender.com/blog-agent-economy-5-things-business.html): Stripe, NVIDIA, Cloudflare, Sentry all building agent infrastructure simultaneously. 5 concrete steps for business readiness.