{"message":"Vietnamese Agricultural Chatbot API","version":"1.0.0","authentication":"Bearer token required for protected endpoints","endpoints":{"chat":"/ai_agent (protected) - Weaviate search + LLM","openai_assistant":"/openai_agent (protected) - OpenAI Assistant API","zalo_webhook":"/zalo_webhook (public) - Zalo Official Account webhook","health":"/health (public)","collections":"/collections (protected) - List all collections","collection_items":"/collections/{name}/items (protected) - List items in collection","delete_collection":"/collections/{name} (protected) - Delete collection permanently","delete_items_by_cms_id":"/collections/{name}/items/cms/{cms_id} (protected) - Delete items by CMS ID","redis_management":"/redis/* (protected) - Redis and Zalo config management","clear_threads":"/redis/threads (protected) - Clear all OpenAI thread data","knowledge_base_upload":"/knowledge-base/upload (protected) - Upload files to knowledge base","upload_status":"/knowledge-base/upload/status/{task_id} (protected) - Check upload task status"}}