{"success":true,"message":"Welcome to the Book API","services":{"tts":{"endpoint":"/api/tts","description":"Text-to-Speech generation using Gemini 2.5 Pro Preview TTS","voices":"/api/tts/voices","health":"/api/tts/health"},"xaitts":{"endpoint":"/api/xaitts","description":"Text-to-Speech generation using xAI TTS via fal.ai","voices":"/api/xaitts/voices","health":"/api/xaitts/health"},"translation":{"endpoint":"/api/translate","description":"Book translation using Gemini 2.5 Flash Lite","word":"/api/translate/word","languages":"/api/translate/languages","health":"/api/translate/health"}},"authentication":{"required":true,"methods":["X-API-Key header","Authorization header","apiKey query parameter"],"example":"X-API-Key: your_api_key_here"},"timestamp":"2026-09-14T20:57:19.802Z"}