# Core LangChain
langchain
langchain-community
langchain-chroma
langchain-nvidia-ai-endpoints
langchain-text-splitters 
langchain-core        
rank_bm25
# Vector Store
chromadb

# PDF Loading
pypdf
pymupdf          # Better PDF parsing (optional but recommended)

# API Server
fastapi
uvicorn[standard]
python-multipart

# Utilities
python-dotenv
pydantic