All-in-One SEO Toolkit

### 🚀 SEO Matrix — All-in-One SEO, Schema & AI Agent API Suite A high-performance, ultra-fast serverless API suite designed for developers, SEO agencies, content automation tools, and **AI Agents / Custom GPTs**. --- ### ⚡ 9 Production-Ready Micro-Services & Endpoints: #### 1. 📑 JSON-LD Schema Generator (`/v1/seo/schema-generate`) - Generates 100% valid Schema.org structured data (Article, Product, FAQ). - Eliminates AI hallucinations and ensures Google Rich Snippet compliance. #### 2. 🎯 LSI & N-Gram Phrase Extractor (`/v1/seo/lsi-keywords`) - Extracts 2-word and 3-word co-occurrence phrase frequencies (N-grams). - Built for TF-IDF content optimization and LSI keyword analysis. #### 3. 🔍 Helpful Content & Readability Auditor (`/v1/seo/content-audit`) - Performs Google Helpful Content heuristic scoring (paragraph distribution, sentence length, thin content warnings). #### 4. 🔗 HTML Link & Anchor Analyzer (`/v1/seo/link-check`) - Extracts and classifies internal vs external links, anchor text, and nofollow attributes. #### 5. 🤖 Robots.txt & Sitemap Directives Generator (`/v1/seo/robots-generator`) - Generates clean robots.txt directives and Sitemap declarations dynamically. #### 6. 🔤 SEO Permalinks & URL Slugify (`/v1/seo/slugify`) - Converts blog titles into clean, lowercased, stop-word-free URL slugs (supports English, Ukrainian, German, Spanish, etc.). #### 7. 🔑 Top Keyword Density Extractor (`/v1/seo/extract-keywords`) - Calculates word counts, keyword frequencies, and density percentages. #### 8. 🏷️ HTML Meta Tags & Canonical Inspector (`/v1/seo/meta-inspect`) - Analyzes Title length, Meta Description, H1 tag count, Canonical, and OpenGraph (OG) image tags. #### 9. 📖 Readability & Reading Time Estimator (`/v1/seo/readability`) - Calculates Flesch difficulty score, total character count, and estimated reading duration. --- ### 🤖 OpenAI Custom GPTs & AI Agent Compatible Connect this API directly to **ChatGPT Custom GPTs**, Claude Projects, or AutoGPT in under 2 minutes. **OpenAPI Action Schema URL:** `https://raw.githubusercontent.com/Vishniak/free-seo-toolkit-api/main/openapi.json` Pass your RapidAPI Key in the `X-RapidAPI-Key` header for automated AI function calling!