kp2524/langchain-use-cases-demo

LangChain Use Cases Demo

Interactive demonstration of 8 LangChain use cases powered by Groq AI:

1. 1.💬 AI-Powered Chatbots - Context-aware conversations
2. 2.📄 Document Question Answering - Ask questions about documents
3. 3.🔍 RAG (Retrieval-Augmented Generation) - Knowledge base queries
4. 4.📝 Document Summarization - Automatic text summarization
5. 5.📊 Data Extraction - Extract structured data from text
6. 6.✍️ Content Generation - Generate context-aware content
7. 7.⚙️ Workflow Automation - Multi-step AI workflows
8. 8.🛠️ Custom AI Tools - Specialized AI-powered tools

🚀 Quick Start

Local Testing

1. 1.Install dependencies:

   python -m venv venv
   source venv/bin/activate  # On Windows: venv\Scripts\activate
   pip install -r requirements.txt

1. 1.Get a free Groq API key:
2. 2.Visit console.groq.com
3. 3.Sign up (free)
4. 4.Create API key

1. 1.Run the app:

   streamlit run app.py

1. 1.Enter your API key in the sidebar and start exploring!

Deploy to Hugging Face Spaces (Docker)

1. 1.Push this code to a GitHub repository:

   git init
   git add .
   git commit -m "Initial commit"
   git remote add origin YOUR_GITHUB_REPO_URL
   git push -u origin main

1. 1.Create Hugging Face Space:
2. 2.Go to huggingface.co/spaces
3. 3.Click "Create new Space"
4. 4.Space name: langchain-use-cases-demo (or your choice)
5. 5.SDK: Docker (select Docker, not Streamlit)
6. 6.Visibility: Public or Private
7. 7.Click "Create Space"

1. 1.Connect GitHub repository:
2. 2.In Space Settings → Repository
3. 3.Click "Import from GitHub" or manually upload files
4. 4.Make sure Dockerfile, app.py, requirements.txt, and README.md are included

1. 1.Add API key as secret:
2. 2.Go to Space Settings → Secrets
3. 3.Add new secret:
4. 4.Key: GROQ_API_KEY
5. 5.Value: Your Groq API key
6. 6.Save

1. 1.Deploy:
2. 2.The Space will automatically build and deploy
3. 3.Check build logs if there are any issues
4. 4.Your app will be live at: https://huggingface.co/spaces/YOUR_USERNAME/SPACE_NAME

Note: The Dockerfile is included in this repo and will automatically be used for deployment.

🛠️ Technology

• —LangChain - AI agent framework
• —Groq - Ultra-fast AI inference (free tier available)
• —Hugging Face - Embeddings and models
• —ChromaDB - Vector database
• —Streamlit - Interactive UI

📝 Note

This app requires a Groq API key (free to get). The key is stored only in your session and never saved.