# SiteAnalyzerFree™ - Free Website SEO Audit Tool & SEO Audit API

> **SiteAnalyzerFree™** is a fast, comprehensive 201-point website SEO audit tool and programmatic SEO audit API for developers and autonomous AI agents. Scan your website in under 50 seconds for technical SEO, Core Web Vitals, mobile responsiveness, trust signals, conversion friction, and generative AI search readiness (AIO).

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## 🚀 Quick Scan & Diagnostics
- **Web Interface**: Run a free diagnostic scan on [SiteAnalyzerFree.com](https://siteanalyzerfree.com/) — no signup or email required.
- **Top 5 Priority Fixes**: Instant diagnostic report with prioritized remediation steps and health score.

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## 🤖 AI Agent API & MCP Server
SiteAnalyzerFree™ provides a first-class programmatic machine-to-machine API and Model Context Protocol (MCP) server for autonomous AI agents, Cursor, Windsurf, Claude Desktop, and LLM pipelines:
- **API Documentation**: https://siteanalyzerfree.com/agent-api/
- **OpenAPI 3.0 Specification**: https://siteanalyzerfree.com/openapi.json
- **Machine-Readable LLMs Index**: https://siteanalyzerfree.com/llms.txt
- **MCP Endpoint**: `POST https://siteanalyzerfree.com/api/v1/agent/mcp.php`
- **OAuth Discovery**: `GET https://siteanalyzerfree.com/.well-known/oauth-authorization-server`
- **OAuth Protected Resource Metadata (RFC 9728)**: `GET https://siteanalyzerfree.com/.well-known/oauth-protected-resource`

### Primary API Endpoints
- **Quick Technical SEO Checkup**: `POST https://siteanalyzerfree.com/api/v1/agent/checkup.php` ($1.00 USD)
- **Full 360° SEO Audit Report**: `POST https://siteanalyzerfree.com/api/v1/agent/full-audit.php` ($39.00 USD)
- **Keyword & Autocomplete Intelligence**: `POST https://siteanalyzerfree.com/api/v1/agent/keyword-report.php` ($7.00 USD)
- **Agent Credit Balance**: `GET https://siteanalyzerfree.com/api/v1/agent/balance.php`

### Sub-Cent AI Agent Micro-Tools ($0.001 - $0.005 USD via x402)
- `check_url_status` ($0.001 USD): Follows redirects, measures response latency, and captures headers.
- `extract_website_metadata` ($0.002 USD): Extracts title, meta description, OpenGraph, JSON-LD, and headings.
- `check_dns_email_auth` ($0.003 USD): Validates SPF, DMARC, and DNS records.
- `detect_website_changes` ($0.005 USD): Stateful DOM hashing and snapshot comparison.
- `check_ai_readiness` ($0.005 USD): Analyzes `robots.txt` AI crawler rules, `llms.txt`, and sitemap indexing.
- `extract_contact_info` ($0.005 USD): Extracts emails, phone numbers, and social profiles.

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## 📚 Guides & Free Tools
- **100-Point Website Optimization Playbook**: https://siteanalyzerfree.com/guide/
- **201 Free Backlinks Directory**: https://siteanalyzerfree.com/backlinks-guide/
- **XML Sitemap**: https://siteanalyzerfree.com/sitemap.xml
- **HTML Sitemap**: https://siteanalyzerfree.com/html-sitemap/
- **Contact & Support**: info@siteanalyzerfree.com