{"message":"Welcome to AI-Powered Document Extraction API","version":"3.0.0","documentation":"/docs","health_check":"/health","quick_start":{"step_1":"Visit /docs for interactive API documentation","step_2":"Check /document-types to see supported documents","step_3a":"POST your PDF to /extract-global for auto-detection (recommended)","step_3b":"OR POST to /extract with optional category/subcategory to guide extraction","step_4":"Receive structured JSON data with validation"},"endpoints":{"extract_global":"POST /extract-global - Auto-detect document type and extract","extract":"POST /extract - Extract data from PDF with optional category/subcategory","health":"GET /health - Check API health","document_types":"GET /document-types - List supported documents","extraction_methods":"GET /extraction-methods - Compare extraction methods","stats":"GET /stats - View API statistics"}}