{"service":"PDF Form Extraction API","version":"1.0.0","endpoints":{"GET /":"API information (public)","GET /health":"Health check (public)","POST /extract-form":"Extract form fields from PDF (requires API key)"},"authentication":{"method":"API Key","header":"API-Key","required":"All endpoints except / and /health","example":"curl -H \"API-Key: your-api-key\" ..."},"usage":{"upload":"Send PDF file as multipart/form-data with field name \"pdf\"","response":"Returns JSON with extracted form fields and coordinates"},"status":{"apiKeyConfigured":true}}